Snorkel S2545 User Manual

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Page 1

Operator’s

Manual

P/N 0410002 February,2001

Page 2

Electrical Hazard

DANGER

The aerial platform is not electrically insulated. Death or serious injury can result

from contact with, or inadequate clearance from, an energized conductor.

Do not go closer than the minimum safe approach distance as defined by the

Minimum Safe Approach Distance section in Chapter 3–Safety.

Regard all conductors as energized.

Allow for electrical wire sag and aerial platform sway.

If the platform, scissors structure, or any part of the aerial platform contacts a high-voltage electrical conductor, the entire machine can become electrically charged.

If that happens, remain on the machine and do not contact any other structure or object. This includes the ground, adjacent buildings, poles, and any other objects that are not part of the aerial platform.

Such contact could make your body a conductor to the other object, creating an electrical shock hazard resulting in death or serious injury.

If an aerial platform is in contact with an energized conductor the platform operator must warn ground personnel in the vicinity to stay away. Their bodies can conduct electricity creating an electrical shock hazard resulting in death or serious injury.

Do not approach or leave the aerial platform until the electricity has been turned off.

Do not attempt to operate the lower controls when the platform, scissors structure, or any part of the aerial platform is in contact with a high-voltage electrical conductor or if there is an immediate danger of such contact.

Personnel on or near an aerial platform must be continuously aware of electrical hazards, recognizing that death or serious injury can result from contact with an energized conductor.

Battery posts, terminals and related accessories contain lead and lead components, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.

S2545 – 0410002

Page 3

Chapter 1. Introduction

Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Manual of Responsibilities. . . . . . . . . . . . . . . . 1-2

Additional Information . . . . . . . . . . . . . . . . . . . 1-2

Chapter 2. Specifications

Component Identification. . . . . . . . . . . . . . . . . 2-1

General Specifications. . . . . . . . . . . . . . . . . . . 2-2

Chapter 3. Safety

Electrocution Hazards . . . . . . . . . . . . . . . . . . . 3-1

Minimum Safe Approach Distance . . . . . . . 3-1

Prestart Inspection . . . . . . . . . . . . . . . . . . . . . 3-2

Work Place Inspection and Practices . . . . . . . 3-2

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Tip-Over and Falling Hazards . . . . . . . . . . . . . 3-3

Electrical System . . . . . . . . . . . . . . . . . . . . . . . 3-3

Hydraulic System. . . . . . . . . . . . . . . . . . . . . . . 3-3

Placards and Decals . . . . . . . . . . . . . . . . . . . . 3-3

Chapter 4. Safety Devices

Emergency Stop Controls . . . . . . . . . . . . . . . . 4-1

Drive Motion Alarm . . . . . . . . . . . . . . . . . . . . . 4-1

Lowering Alarm . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Pothole Protector Skids . . . . . . . . . . . . . . . . . . 4-2

Drive/Lift Pothole Protector Interlock. . . . . . . . 4-2

Drive/Lift Level Sensor Interlock . . . . . . . . . . . 4-2

Guardrails . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Emergency Lowering Handle . . . . . . . . . . . . . 4-2

Safety Prop . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Flashing Light . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Lanyard Anchors . . . . . . . . . . . . . . . . . . . . . . . 4-4

Horn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Electrical Power Outlet . . . . . . . . . . . . . . . . . . 4-4

Chapter 5. Gauges

Hour Meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Ammeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Battery Condition Indicator . . . . . . . . . . . . . . . 5-1

Chapter 6. Batteries

General Maintenance . . . . . . . . . . . . . . . . . . . 6-1

Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Chapter 7. Controls

Lower Controls. . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Battery Disconnect Switch . . . . . . . . . . . . . 7-1

Emergency Stop Switch . . . . . . . . . . . . . . . 7-1

Control Selector Switch. . . . . . . . . . . . . . . . 7-1

Platform Raise/Lower Switch . . . . . . . . . . . 7-1

Circuit Breaker Reset Button. . . . . . . . . . . . 7-1

Low Voltage Warning Light . . . . . . . . . . . . . 7-1

Upper Controls . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Emergency Stop Button . . . . . . . . . . . . . . . 7-2

Drive/Lift Selector Switch . . . . . . . . . . . . . . 7-2

Joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Interlock . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Steer Switch . . . . . . . . . . . . . . . . . . . . . . 7-2

Low Voltage Warning Light . . . . . . . . . . . . . 7-3

Horn Button . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Battery Condition Indicator . . . . . . . . . . . . . 7-3

Chapter 8. Prestart Inspection

Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . 8-2

Electrical System . . . . . . . . . . . . . . . . . . . . . . . 8-2

Battery Fluid Level . . . . . . . . . . . . . . . . . . . 8-2

Battery Terminals . . . . . . . . . . . . . . . . . . . . 8-2

Battery Charger. . . . . . . . . . . . . . . . . . . . . . 8-2

Cables and Wiring Harness . . . . . . . . . . . . 8-3

Hydraulic System. . . . . . . . . . . . . . . . . . . . . . . 8-3

Fluid Level. . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Hoses, Tubes, and Fittings . . . . . . . . . . . . . 8-3

Free-Wheeling Valve . . . . . . . . . . . . . . . . . . 8-4

Tires and Wheels. . . . . . . . . . . . . . . . . . . . . . . 8-4

Parking Brakes . . . . . . . . . . . . . . . . . . . . . . 8-4

Ground Strap . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Lower Control Station . . . . . . . . . . . . . . . . . . . 8-4

Operating Controls . . . . . . . . . . . . . . . . . . . 8-4

Emergency Stop . . . . . . . . . . . . . . . . . . . . . 8-5

Lowering Alarm . . . . . . . . . . . . . . . . . . . . . . 8-5

Pothole Protector Interlock . . . . . . . . . . . . . . . 8-5

Level Sensor Interlock . . . . . . . . . . . . . . . . . . . 8-6

Emergency Lowering. . . . . . . . . . . . . . . . . . . . 8-6

Safety Prop . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Flashing Light . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Weldments . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Rollers and Slide Blocks . . . . . . . . . . . . . . . 8-7

Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Upper Control Station . . . . . . . . . . . . . . . . . . . 8-8

Guardrail System . . . . . . . . . . . . . . . . . . . . 8-8

Platform Extension . . . . . . . . . . . . . . . . . . . 8-8

Swing-Down Rails . . . . . . . . . . . . . . . . . . . . 8-8

Operating Controls . . . . . . . . . . . . . . . . . . . 8-8

Emergency Stop . . . . . . . . . . . . . . . . . . . . . 8-9

Lowering Alarm . . . . . . . . . . . . . . . . . . . . . . 8-9

Drive Motion Alarm . . . . . . . . . . . . . . . . . . . 8-9

Battery Condition Indicator . . . . . . . . . . . . . 8-9

Lanyard Anchors . . . . . . . . . . . . . . . . . . . . . 8-9

Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Electrical Power Outlet . . . . . . . . . . . . . . . . 8-9

Placards and Decals . . . . . . . . . . . . . . . . . . . 8-10

S2545 – 0410002

Page 4

Table of Contents

Chapter 9. Operation

Preparing for Operation . . . . . . . . . . . . . . . . . . 9-1

Lower Controls. . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Upper Controls . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Drive Speeds . . . . . . . . . . . . . . . . . . . . . 9-2

Drive/Lift Level Sensor Interlock. . . . . . . 9-2

Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Platform. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Raising and Lowering . . . . . . . . . . . . . . . 9-3

Extending . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Lift-Up Entry Gate. . . . . . . . . . . . . . . . . . 9-4

Swing-Down Rails. . . . . . . . . . . . . . . . . . 9-4

Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Swing-Out Trays . . . . . . . . . . . . . . . . . . . . . . . 9-5

Electrical Power Outlet . . . . . . . . . . . . . . . . . . 9-6

Chapter 10. Stowing and Transporting

Stowing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Transporting. . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Winching . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Hoisting . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Lifting With a Forklift . . . . . . . . . . . . . . . . . 10-2

Securing for Transport. . . . . . . . . . . . . . . . 10-3

Chapter 11. Emergency Operation

Emergency Lowering. . . . . . . . . . . . . . . . . . . 11-1

Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Chapter 12. Troubleshooting

Troubleshooting Chart . . . . . . . . . . . . . . . . . . 12-1

Appendix A. Glossary

S2545 – 0410002

Page 5

Chapter 1. Introduction

CAUTIO

The aerial platform is a self-propelled scissors lift used to raise personnel, their tools, and material to the workstation. The platform is raised and lowered with a hydraulic cylinder. Hydraulic motors on each of the front drive wheels provide power to move the aerial platform.

The aerial platform has been manufactured to conform to all applicable requirements of the following organizations.

●

Occupational Safety and Health Administration (OSHA)

●

American National Standards Institute (ANSI)

●

Canadian Standards Association (CSA)

This manual provides information for safe and proper operation of the aerial platform. Read and understand the information in this manual before operating the aerial platform on the job.

Additional copies of this manual may be ordered from Snorkel. Supply the model and manual part number from the front cover to assure that the correct manual will be supplied.

All information in this manual is based on the latest product information at the time of publication. Snorkel reserves the right to make product changes at any time without obligation.

■

Safety Alerts

A safety alert symbol is used throughout this manual to indicate danger and caution instructions. Follow these instructions to reduce the likelihood of personal injury and property damage. The terms danger and caution indicate varying degrees of personal injury or property damage that can result if the instruction is not followed.

DANGER

Indicates a situation which if not avoided can result in death or serious injury.

Indicates a situation which if not avoided can result in minor injury or property damage.

■

Notes

Notes are used to provide special information or helpful hints to assist in aerial platform operation, but do not indicate a hazardous situation.

■

Options

This manual provides information about the following options even though some machines may not be equipped with them.

●

Horn

●

Flashing light

●

Lanyard anchors

●

Swinging platform gate

●

Fixed platform rails

●

AC generator

●

Battery condition indicator

●

Electrical power outlet with ground fault circuit interrupter

■

Operation

The aerial platform has built-in safety features and has been factory tested for compliance with Snorkel specifications and industry standards. However, any personnel lifting aerial platform can be potentially dangerous in the hands of untrained or careless operators.

DANGER

The potential for an accident increases when the aerial platform is operated by personnel who are not trained and authorized. Death or serious injury can result from such accidents. Read and understand the information in this manual and on the placards and decals on the machine before operating the aerial platform on the job.

Training is essential and must be performed by a qualified person. Become proficient in knowledge and actual operation before using the aerial platform on the job. You must be trained and authorized to perform any functions of the aerial platform. Operation of the aerial platform must be within the scope of the machine specifications.

The operator bears ultimate responsibility for following all manufacturer's instructions and warnings, regulations and safety rules of their employer and/or any state or federal law.

S2545 – 0410002 page 1 - 1

Page 6

Chapter 1. Introduction

■

Maintenance

Every person who maintains, inspects, tests, or repairs the aerial platform must be qualified and authorized to do so. Following the daily prestart inspection in this Operator’s Manual will help keep the aerial platform in optimum working condition. Other maintenance functions must be performed by maintenance personnel who are qualified to work on the aerial platform.

Do not modify this aerial platform without prior written consent of the Snorkel Engineering Department. Modification may void the warranty, adversely affect stability, or affect the operational characteristics of the aerial platform.

■

Manual of Responsibilities

All owners and users of the aerial platform must read, understand, and comply with all applicable regulations. Ultimate compliance to OSHA regulations is the responsibility of the user and their employer.

ANSI publications clearly identify the responsibilities of all personnel who may be involved with the aerial platform. A reprint of the “Manual of Responsibilities for Dealers, Owners, Users, Operators, Lessors and Lessees of ANSI/SIA A92.6-1990 Self-Propelled Elevating Work Platforms” is available from Snorkel dealers or from the factory upon request.

Copies are also available from:

Scaffold Industry Association 20335 Ventura Blvd. Suite 310 Woodland Hills, CA 91364-2471 USA

■

Additional Information

For additional information contact your local dealer or Snorkel at:

Snorkel International, Inc. P.O. Box 1160 St. Joseph, MO 64502-1160 USA 816-364-0317

http://www.snorkelusa.com

page 1 - 2 S2545 – 0410002

Page 7

■

Component Identification

Guardrails

Platform

Scissors Structure

Chassis

90 in

228.6 cm

Chapter 2. Specifications

Platform Extension

Upper Controls

Toeboards

78.5 in - 199.4 cm Rails Lowered

36 in

91.4 cm

89 in - 226.1 cm

Rails Raised or

Fixed Rails

Rear

Pothole Protector Skid

78 in

198.1 cm

95 in

241.3 cm

Hydraulic Tray (Right Side) Battery Tray (Left Side)

44 in

111.8 cm

Front (Steer)

4 in - 10.2 cm Platform Lowered

1.25 in - 3.2 cm Platform Raised

Lower Controls

Operator’s Manual Holder

45 in

114.

S2545 – 0410002 page 2 - 1

Page 8

Chapter 2. Specifications

■

General Specifications

Maximum platform height . . . . . . . . . . . 25′ (7.6 m)

Working height . . . . . . . . . . . . . . . . . . . 31′ (9.4 m)

Platform size

Main . . . . . . . . . 44″ x90″ (111.8 cm x 228.6 cm)

Extension . . . . . . 36″ x40″ (91.4 cm x 101.6 cm)

Guardrail height

Platform. . . . . . . . . . . . . . . . . . . 44.3″ (112.5 cm)

Platform extension . . . . . . . . . . . . 43.3″ (110 cm)

Toeboard height . . . . . . . . . . . . . . . . . 6″ (15.2 cm)

Wheelbase . . . . . . . . . . . . . . . . . . . 78″ (198.1 cm)

Platform rated work load

Total . . . . . . . . . . . . . . . . . . . . . 850 lb (385.6 kg)

Platform extension. . . . . . . . . . . 250 lb (113.4 kg)

Weight (GVW approx.) . . . . . . 4,700 lb (2,131.9 kg)

Drive

Speed #1, elevated . . . . . . . . . 0.4 mph (0.6 kph)

Speed #2, stowed . . . . . . . . . . 1.1 mph (1.8 kph)

Speed #3, stowed . . . . . . . . . . 2.0 mph (3.2 kph)

Gradeability. . . . . . . . . . . . . . . . . . . . . . . . . . . 25%

Platform function speed

Platform raise

Speed #1 . . . . . . . . . . . . . . . . . . . . . . . 105 sec

Speed #2 . . . . . . . . . . . . . . . . . . . . . . . . 45 sec

Speed #3 . . . . . . . . . . . . . . . . . . . . . . . . 25 sec

Platform lower . . . . . . . . . . . . . . . . . . . . . 45 sec

Turning radius

Inside . . . . . . . . . . . . . . . . . . . . . . . 30″ (76.2 cm)

Outside . . . . . . . . . . . . . . . . . . . 115″ (292.1 cm)

Overall length . . . . . . . . . . . . . . . . . 95″ (241.3 cm)

Overall width . . . . . . . . . . . . . . . . . . 45″ (114.3 cm)

Ground clearance

Pothole protector lowered . . . . . . . 1.25″ (3.2 cm)

Pothole protector raised . . . . . . . . . . 4″ (10.2 cm)

Tires

Solid rubber, non-marking . . . . . . . . . . . . 16″ x5″

. . . . . . . . . . . . . . . . . . . . . (40.6 cm x 12.7 cm)

Electrical system. . . . . . . . . . . . . . . . . . . . 24 V DC

Hydraulic system

Maximum pressure. . . . . . 2,750 psi (18,961 kPa)

Hydraulic fluid recommended

Above 10°F (-13°C) . . . . . . . . . Mobil DTE-13M

. . . . . . . . . . . . . . . . . . . . . . . . . . (ISO VG32)

Below 10°F (-13°C) . . . . . . . . . Mobil DTE-11M

. . . . . . . . . . . . . . . . . . . . . . . . . . (ISO VG15)

Reservoir capacity

Total . . . . . . . . . . . . . . . . . 6.5 gal USA (24.6 L)

To full mark . . . . . . . . . . . . . 6 gal USA (22.7 L)

Ambient air temperature operating range

Fahrenheit . . . . . . . . . . . . . . . . . . . . 0°F to 110°F

Celsius . . . . . . . . . . . . . . . . . . . . . -18°C to 43°C

Drive system . . . . . . . . . . . . . . . . . . . 2 wheel drive

Overall height, stowed

Platform rails lowered . . . . . . . . 78.5″ (199.4 cm)

Platform rails raised . . . . . . . . . . . 89″ (226.1 cm)

Fixed platform rails . . . . . . . . . . . . 89″ (226.1 cm)

Floor loading pressure

Local concentrated pressure . . . . . . . . . . 213 psi

Overall uniform pressure . . . . . . . . . . . . . 187 psf

page 2 - 2 S2545 – 0410002

Page 9

Chapter 3. Safety

Knowledge of the information in this manual, and proper training, provide a basis for safely operating the aerial platform. Know the location of all controls and how they operate to act quickly and responsibly in an emergency.

Safety devices reduce the likelihood of an accident. Never disable, modify, or ignore any safety device. Safety alerts in this manual indicate situations where accidents may occur.

If any malfunction, hazard or potentially unsafe condition relating to capacity, intended use, or safe operation is suspected, stop aerial platform operation and seek assistance.

The operator bears ultimate responsibility for following all manufacturer’s instructions and warnings, regulations and safety rules of their employer and/or any state or federal law.

■

Electrocution Hazards

The aerial platform is made of metal components and is not insulated. Regard all conductors as energized. Do not operate outside during a thunderstorm.

Minimum Safe Approach Distance

❑

Minimum safe approach distances to energized power lines and their associated parts must be observed while operating the aerial platform.

DANGER

The aerial platform is not electrically insulated. Death or serious injury can result from contact with, or inadequate clearance from, an energized conductor. Do not go closer than the minimum safe approach distance as defined by ANSI.

ANSI publications define minimum distances that must be observed when working near bus bars and energized power lines. Table 1 and Figure 3 are reprinted courtesy of Scaffold Industry Association, ANSI/SIA A92.6, page 26.

Voltage range

(phase to phase)

0 to 300V

Over 300V to 50kV

Over 50kV to 200kV

Over 200kV to 350kV

Over 350kV to 500kV

Over 500kV to 750kV

Over 750kV to 1000kV

Table 1—Minimum Safe Approach Distance

Minimum safe approach distance

(Feet) (Meters)

Avoid contact

3.05

4.60

6.10

7.62

10.67

13.72

Denotes prohibited zone

Figure 3—Minimum Safe Approach Distance

S2545 – 0410002 page 3 - 1

Page 10

Chapter 3. Safety

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Prestart Inspection

Perform a prestart inspection before each shift as described in Chapter 8. Do not use the aerial platform on the job unless you are trained and authorized to do so.

■

Work Place Inspection and Practices

Do not use the aerial platform as a ground connection when welding. The welding ground clamp must be attached to the same structure that is being welded. Electrical current flow can be very intense, causing serious internal damage to some components.

Inspect the area before and during aerial platform use. The following are some potential hazards that may be in the work place.

●

Debris

●

Slopes

●

Drop-offs or holes

●

Bumps and floor obstructions

●

Overhead obstructions

●

Unauthorized persons

●

High voltage conductors

●

Wind and weather conditions

●

Inadequate surface and support to withstand load forces applied by the aerial platform in all operating configurations

DANGER

Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings, structures, or other obstacles. Make sure there is sufficient clearance around the machine before moving the chassis or platform. Allow sufficient room and time to stop movement to avoid contact with structures or other hazards.

Always look in the direction of movement. Drive with care and at speeds compatible with the work place conditions. Use caution when driving over rough ground, on slopes, and when turning. Do not engage in any form of horseplay or permit riders any place other than in the platform.

Secure all accessories, containers, tools, and other materials in the platform to prevent them from accidentally falling or being kicked off the platform. Remove all objects that do not belong in or on the aerial platform.

Never steady the platform by positioning it against another platform. Do not use boards, or other temporary means to support or level the aerial platform.

Do not operate the aerial platform if it is damaged or not functioning properly. Qualified maintenance personnel must correct the problem before putting the aerial platform back into service.

Before using the aerial platform in any hazardous (classified) location, make certain it is approved and of the type required by ANSI/NFPA 505 for use in that particular location.

Know and understand the job site traffic-flow patterns and obey the flagmen, road signs, and signals.

While operating the aerial platform, a good safety practice is to have qualified personnel in the immediate area to:

●

Help in case of an emergency

●

Operate emergency controls as required

●

Watch for loss of control by platform operator

●

Warn the operator of any obstructions or hazards that may not be obvious to them

●

Watch for soft terrain, sloping surfaces, drop-offs, etc. where stability could be jeopardized

●

Watch for bystanders and never allow anyone to be under, or to reach through, the scissors structure while operating the aerial platform

■

Operation

Use three points of support when entering or exiting the platform. For example, use two hands and one foot when climbing into the platform.

Make sure the area below the platform is free of personnel before lowering.

Keep both feet positioned firmly on the platform floor. Operate the controls slowly and deliberately to avoid jerky and erratic operation. Always stop the controls in neutral before going in the opposite direction.

Do not dismount while the aerial platform is in motion or jump off the platform.

Properly stow the aerial platform and secure it against unauthorized operation at the end of each work day, before transporting, or if it is left unattended.

page 3 - 2 S2545 – 0410002

Page 11

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Tip-Over and Falling Hazards

Operate the aerial platform only on a firm, flat, level surface capable of withstanding all load forces imposed by the aerial platform in all operating conditions. Raise the platform only when the aerial platform is on level ground. Do not operate the machine within 4′ (1.2 m) of any drop-off or hole.

It is best not to transfer from the platform to another structure or vice versa, unless that is the safest way to do the job. Judge each situation separately taking the work environment into account. If it is necessary to transfer from the platform to another structure use the platform entrance. Do not climb over the guardrails.

Do not operate the aerial platform in windy or gusty conditions. Do not add anything to the aerial platform that will increase the wind loading such as billboards, banners, flags, etc.

Chapter 3. Safety

DANGER

Batteries give off hydrogen and oxygen that can combine explosively. Death or serious injury can result from a chemical explosion. Do not smoke or permit open flames or sparks when checking the batteries.

Battery acid can damage the skin and eyes. Serious infection or reaction can result if medical treatment is not given immediately. Wear face and eye protection when working near the batteries.

Batteries contain sulfuric acid that can damage your eyes or skin on contact. Wear a face shield, rubber gloves, and protective clothing when working around batteries. If acid contacts your eyes, flush immediately with clear water and get medical attention. If acid contacts your skin, wash off immediately with clear water.

Never operate the aerial platform without all parts of the guardrail system in place and the safety chain or gate closed.

Do not exceed the platform capacity as indicated on the platform rating placard on the platform. Carry all loads from inside the platform.

Do not operate the aerial platform from trucks, trailers, railway cars, floating vessels, scaffolds, or similar equipment unless the application is approved in writing by Snorkel.

Do not use the aerial platform as a crane, hoist, jack, or for any purpose other than to position personnel, tools, and materials.

Do not climb on the guardrails or use ladders, planks, or other devices to extend or increase the work position from the platform.

Take care to prevent rope, electrical cords, and hoses, etc., from becoming caught in or on the aerial platform. If the platform or scissors structure becomes caught on an adjacent structure or other obstacle and is prevented from normal motion, reverse the control to free the platform. If control reversal does not free the platform, evacuate the platform before attempting to free it.

■

Electrical System

Charge batteries in a well-ventilated area free of flame, sparks, or other hazards that might cause fire or explosion.

■

Hydraulic System

The hydraulic system contains hoses with hydraulic fluid under pressure.

DANGER

Hydraulic fluid escaping under pressure can have enough force to inject fluid into the flesh. Serious infection or reaction can result if medical treatment is not given immediately. In case of injury by escaping hydraulic fluid, seek medical attention at once.

Do not place your hand or any part of your body in front of escaping hydraulic fluid. Use a piece of cardboard or wood to search for hydraulic leaks.

■

Placards and Decals

The aerial platform is equipped with placards and decals that provide instruction for operation and accident prevention. Do not operate the aerial platform if any placards or decals are missing or not legible. The location, part numbers and descriptions of all placards and decals are illustrated in Chapter 8 under Placards and Decals.

The placards and decals may be cleaned with soap and water, and a soft cloth if the words or pictures cannot be seen. Do not use solvents.

The safety related placards and decals are illustrated on the following pages.

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Page 12

Chapter 3. Safety

Top of Chassis

2nd Inner Arm Top

Right Side

Front

page 3 - 4 S2545 – 0410002

Page 13

Chapter 3. Safety

Top of Control Panel in HydraulicTray

(Both Sides)

Left Side

(EE Machines Only)

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Page 14

Chapter 3. Safety

Swing-Down Platform Rails

Rear of Chassis

page 3 - 6 S2545 – 0410002

Page 15

This aerial platform is manufactured with safety devices, placards, and decals to reduce the likelihood of an accident. For the safety of all personnel, do not disable, modify, or ignore any safety device. Safety devices are included in the daily prestart inspection.

DANGER

The potential for an accident increases when safety devices do not function properly. Death or serious injury can result from such accidents. Do not alter, disable, or override any safety device.

Chapter 4. Safety Devices

Horn Button

Emergency Stop Button

If any safety devices are defective, remove the aerial platform from service until qualified maintenance personnel can make repairs.

■

Emergency Stop Controls

There is an emergency stop control at the lower and upper control station.

At the lower controls, the emergency stop is a two-position toggle switch (refer to Figure 4.1) with a red safety guard. Push the red safety guard down over the toggle switch to disconnect power to all control circuits. Lift the guard and push the toggle switch up to restore power.

Circuit Breaker Reset Button

Platform Raise/Lower Switch

Control Selector Switch

Low Voltage Warning Light

Battery Disconnect Switch

Emergency Stop Switch

Figure 4.1—Lower Control Station

Figure 4.2—Upper Control Station

Push the emergency stop button in to disengage power to all control circuits. Pull the button out to restore power.

■

Drive Motion Alarm

When the joystick is positioned to move the aerial platform forward or in reverse, the drive motion alarm emits a loud beeping sound. This alarm warns personnel in the work area to stand clear.

■

Lowering Alarm

When the platform is being lowered, an alarm sounds to warn personnel in the work area to stand clear.

DANGER

Pinch points exist on the scissors structure. Death or serious injury can result if the scissors structure lowers onto personnel within the scissors arms or under the raised platform. Make sure all personnel stand clear while raising and lowering the platform.

Be careful when lowering the platform. Keep hands and fingers away from the scissors structure components.

NOTE

The lower controls override the upper controls. If the upper control emergency stop button is engaged the lower controls can still be used to operate the aerial platform.

At the upper controls, the emergency stop is a two-position push button (refer to Figure 4.2).

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Page 16

Chapter 4. Safety Devices

■

Pothole Protector Skids

The pothole protector skids automatically lower when the platform is elevated approximately 24″. Ground clearance is reduced from 4″ to about

″ when the skids lock into position (refer to

Figure 4.3).

Pothole Protector Skid

Figure 4.3—Pothole Protector Skids

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Do not drive or position the aerial platform for elevated use within four feet of any drop-off, hole, or other tip-over hazard.

This protection system limits the tilt angle if a wheel is driven into a drop-off or hole. This greatly reduces the likelihood of the aerial platform tipping over.

The pothole protection system is for added protection and does not justify operating near drop-offs or holes.

■

Drive/Lift Pothole Protector Interlock

The aerial platform drive and lift functions are interlocked through a limit switch that senses whether or not the pothole protection linkage is locked into position. The drive/lift pothole interlock operates when the platform is elevated approximately seven feet.

If an obstruction under the skids, or some other impairment prevents the skids from locking into position, the drive and lift functions will not operate and an alarm will sound.

■

Drive/Lift Level Sensor Interlock

The aerial platform drive and lift functions are interlocked through a level sensor system. The drive/lift level sensor interlock operates when the platform is elevated approximately seven feet.

If the aerial platform chassis is tilted more than two degrees side-to-side or four degrees front-to-rear, the drive and lift functions will not operate and an alarm will sound.

Lower the platform and drive to a level surface when the drive/lift level sensor alarm sounds.

The drive/lift level sensor system is for added protection and does not justify operating on anything other than firm, flat, level surfaces.

■

Guardrails

The guardrail system includes a top rail, mid rail, and toeboards around the sides of the platform (refer to Figure 4.4).

Top Rail

Mid Rail

Toeboard

Entry Chain

Figure 4.4—Guardrails

A safety chain or an optional swinging gate allows for access to the platform. The swinging gate closes automatically after entering or exiting the platform. The chain or gate is part of the guardrail system and must be securely fastened after entering the platform.

■

Emergency Lowering Handle

The emergency lowering handle may be used to manually lower the platform if there is a malfunction in the hydraulic or electrical system. The handle (refer to Figure 4.5) is mounted at the front of the aerial platform.

Lower the platform and remove the obstruction when the drive/lift pothole protector interlock alarm sounds.

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Page 17

Emergency Lowering Handle

Figure 4.5—Emergency Lowering Handle

Chapter 4. Safety Devices

DANGER

Pinch points exist on the scissors structure. Death or serious injury can result if the scissors structure drops onto personnel working within the scissors arms or under the raised platform. Properly position the safety prop before reaching through the scissors structure.

When inspecting or servicing the aerial platform with the platform raised, use the following procedure to properly position the safety prop.

1. Remove all tools and material from the platform.

The emergency lowering handle may be used to lower the scissors arms onto the safety prop before inspecting the machine.

■

Safety Prop

The safety prop (refer to Figure 4.6) is used to support the scissors structure when access to the scissors arm components or the chassis is required. Always use the safety prop when the platform is raised during inspection and maintenance.

Safety Prop

24"

2. Using the lower controls, raise the platform until the open height between the arm center pins is approximately 24″ (refer to Figure 4.6).

3. Swing the safety prop upward from the storage position to the support position.

4. Remove hands and arms from the scissors structure area.

5. Lower the platform until the scissors are supported by the safety prop.

Use the following procedure to stow the safety prop.

1. Using the lower controls, raise the platform until the open height between the arm center pins is approximately 24″.

2. Swing the safety prop down to the stowed position.

Figure 4.6—Safety Prop

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Page 18

Chapter 4. Safety Devices

■

Flashing Light

An optional flashing light may be located at the front of the aerial platform (refer to Figure 4.7). The flashing light warns personnel that the aerial platform is in the area.

Flashing Light

Figure 4.7—Flashing Light

The light flashes at about one flash per second when the machine is set up for operation from the upper controls.

■

Horn

The optional horn (refer to Figure 4.2) may be used to warn personnel on the ground. The horn is operational when the machine is set up for operation from the upper controls.

■

Electrical Power Outlet

The optional electrical power outlet (refer to Figure 4.9) at the platform contains a ground fault circuit interrupter (GFCI) to help prevent accidental conductor grounding.

■

Lanyard Anchors

Two optional lanyard anchors for fall restraint anchorage may be provided, one at the front of the platform extension (refer to Figure 4.8) and one at the side of the platform.

Lanyard Anchor

Figure 4.8—Lanyard Anchors

NOTE

The lanyard anchors are not for lifting or tying the machine down.

Figure 4.9—Electrical Power Outlet

If local work rules require the use of a fall restraint device, properly connect it to a lanyard anchor before raising the platform. Do not use the aerial platform for

page 4 - 4 S2545 – 0410002

personal fall arrest

anchorage.

Page 19

Chapter 5. Gauges

The aerial platform is equipped with an ammeter, an hour meter and may have an optional battery condition indicator.

■

Hour Meter

The hour meter is located at the lower controls (refer to Figure 5.1). It measures the accumulated aerial platform operating time.

Hour Meter

Figure 5.1—Lower Controls

■

Battery Condition Indicator

The optional battery condition indicator (refer to Figure 5.3) is located on the upper control panel. It displays the level of available battery power to operate the aerial platform. The number one on the scale indicates full power and zero indicates no power.

Battery Condition Indicator

Figure 5.3—Battery Condition Indicator

■

Ammeter

The ammeter is located on the battery charger (refer to Figure 5.2). When the batteries are charging, the ammeter displays the level of current flow to the batteries.

Ammeter

Figure 5.2—Battery Charger

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Page 20

Chapter 6. Batteries

CAUTIO

The battery tray contains 4, 240 amp, 6 volt batteries. The batteries supply 24 volt DC electrical power to operate the aerial platform electrical and electro hydraulic components. Proper machine operation depends on well maintained and charged batteries.

■

General Maintenance

Always keep the batteries clean, free of dirt and corrosion. A film on top of the battery can accelerate discharge.

Cold reduces battery capacity and retards charging. Heat increases water usage and can result in overcharging. Very high temperatures can cause thermal run away which may lead to an explosion or fire. Consult a battery charger specialist if extreme temperature use is unavoidable.

DANGER

Battery acid can damage the skin and eyes. Serious infection or reaction can result if medical treatment is not given immediately. Wear face and eye protection when working near the batteries.

The batteries can be overcharged and/or damaged if the charger fails to shut off automatically. Do not leave the battery charger on for more than two days.

It may take from 1½ to 16 hours to recharge the batteries depending on the amount of discharge. If the charging cycle exceeds 16 hours without the batteries being fully recharged, shut off the charger and have the batteries checked.

Use the following procedure to charge the batteries.

1. Turn the battery disconnect switch off (refer to Figure 6.1).

Battery Disconnect Switch

Use distilled water to refill the batteries. Avoid water containing metallic solids such as iron.

■

Charging

Fully recharge the batteries, immediately after use. One charging cycle per day is preferred. Fully charged batteries perform best. The deeper the discharge, the fewer number of cycles a battery will deliver. Deep discharges deteriorate the battery quicker than light shallow cycles.

An overly discharged battery may need to be cycled a few times before it can fully recover. If a battery begins to heat before becoming fully charged, it may be necessary to recharge and discharge the battery a few times.

The aerial platform is equipped with an automatic battery charger that will completely recharge the batteries and turn off after the charge cycle is completed.

DANGER

Batteries give off hydrogen and oxygen that can combine explosively. Death or serious injury can result from a chemical explosion. Charge the batteries only in a well ventilated area away from sparks or flame.

Figure 6.1—Lower Controls

2. Check the battery water level. Add water to individual cells only if the plates are exposed.

3. Plug the charger into a properly grounded outlet using a 3 conductor, 14 gauge or larger extension cord. After a short delay the charger will turn on. The ammeter (refer to Figure 6.2) will indicate near 20 amps initially then taper off to 5 to 10 amps as the batteries charge.

Ammeter

Figure 6.2—Battery Charger

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Page 21

Chapter 6. Batteries

NOTE

If the batteries are fully charged when the charger is plugged in, the ammeter will initially read 15 to 20 amps then quickly read zero.

4. Leave the charger plugged in until it shuts itself off.

5. Unplug the extension cord after the battery charger turns itself off. Allow the batteries to cool off after charging.

6. Check the battery water level and refill cells as necessary.

page 6 - 2 S2545 – 0410002

Page 22

Chapter 7. Controls

CAUTIO

Aerial platform functions may be operated with controls at the lower control station or the upper control station.

■

Lower Controls

The lower controls (refer to Figure 7.1) are located in the hydraulic tray on the right side of the chassis. The following are located at the lower control station.

●

Battery disconnect switch

●

Emergency stop switch

●

Control selector switch

●

Platform raise/lower switch

●

Circuit breaker reset button

●

Low voltage warning light

Circuit Breaker Reset Button

Control Selector Switch

Battery Disconnect Switch

Emergency Stop Switch

❑

The emergency stop is a two-position toggle switch with a red safety guard. Push the red safety guard down over the toggle switch to disconnect power to all control circuits. Lift the guard and push the toggle switch up to restore power.

Control Selector Switch

❑

Place the control selector switch in the down position to operate aerial platform functions from the lower controls. The upper controls will not operate while the control selector is in the lower position.

Place the selector switch in the up position to operate the aerial platform functions from the upper controls.

Platform Raise/Lower Switch

❑

Pull up on the platform switch to raise the platform. Release the switch when the desired height is reached.

Platform Raise/Lower Switch

Low Voltage Warning Light

Emergency Stop Switch

Figure 7.1—Lower Controls

❑

Battery Disconnect Switch

The battery disconnect removes electrical power from all electrically controlled functions when in the off position. Place the switch in the on position to operate any electrically controlled function.

Only authorized personnel should operate the aerial platform. Unqualified personnel may cause injury to coworkers or property damage. Lock the battery disconnect switch in the off position before leaving the aerial platform unattended.

Lock the battery disconnect switch in the off position to prevent unauthorized use of the aerial platform.

Push down on the switch to lower the platform. The lowering alarm will sound as the platform lowers.

❑

Circuit Breaker Reset Button

A circuit breaker is located in the electrical power line of the lower control panel. The circuit breaker protects the wiring and components from electrical overload in case of a short circuit or other fault.

Push the button to reset the circuit breaker.

A tripped circuit breaker indicates a malfunction in the electrical system. Component damage can result if the cause of the malfunction is not corrected. Do not operate the aerial platform if the circuit breaker trips repeatedly.

❑

Low Voltage Warning Light

When the voltage of the battery pack falls to a preset level too low for proper machine operation the following happens.

●

The low voltage warning light turns on

●

An alarm sounds

●

The platform will not raise

S2545 – 0410002 page 7 - 1

Page 23

Chapter 7. Controls

Lower the platform to the stowed position when the warning light is on and the alarm is activated. Drive to a battery recharging area and fully recharge the battery pack before returning the aerial platform to service.

■

Upper Controls

The upper controls (refer to Figure 7.2) are located on the control box at the platform. The following are located at the upper control station.

●

Emergency stop button

●

Drive/lift selector switch

●

Joystick to control platform lift, drive and steer

●

Low voltage warning light

The optional horn button and battery condition indicator gauge may also be located at the upper control station.

Low Voltage Warning Light

Horn Button

Interlock Switch

Steer Switch

Emergency Stop Button

Battery Condition Indicator

Drive/Lift Selector Switch

Joystick

Figure 7.2—Upper Controls

❑

Emergency Stop Button

The emergency stop is a two-position red push button on the front of the upper control box. Push the button in to disconnect power to all control circuits at the upper controls. Pull the button out to restore power.

NOTE

The lower controls override the upper controls. If the upper control emergency stop button is engaged the lower controls can still be used to operate the aerial platform.

Drive/Lift Selector Switch

❑

Place the drive/lift selector switch in the drive position to drive the aerial platform using the joystick. The platform will not raise or lower while driving.

Place the drive/lift selector switch in the lift position to raise and lower the platform using the joystick.

Joystick

❑

The joystick (refer to Figure 7.2) allows for operating more than one function at a time. Use the joystick to operate the following functions.

●

Aerial platform steering

●

Aerial platform drive and speed

●

Platform raise/lower and speed

Movement of the joystick in a given direction produces a corresponding movement of the aerial platform. The steering and drive functions may be operated separately or simultaneously.

Interlock

◆

The joystick has an interlock switch in the handle. Engage the interlock by grasping the joystick and pulling the switch toward the handle. Engage the interlock to activate the steering, drive, or lift functions.

◆

Steer Switch

The steer switch is a momentary contact, rocker switch on top of the joystick. This switch controls the two front wheels to steer the aerial platform.

To steer to the right, engage the interlock on the joystick and hold down the right side of the steer switch. To steer to the left, engage the interlock on the joystick and hold down the left side of the steer switch.

NOTE

The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.

Push the emergency stop button in when the upper controls are not in use to help protect against unintentional platform operation.

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Page 24

Low Voltage Warning Light

❑

When the voltage of the battery pack falls to a preset level too low for proper machine operation the following happens.

●

The low voltage warning light turns on

●

An alarm sounds

●

The platform will not raise

Horn Button

❑

The optional horn button is on the left side of the upper control box. Press the push button switch to sound the horn.

Battery Condition Indicator

❑

The optional battery condition indicator gauge is on the top of the upper control box. It indicates the level of available battery power to operate the aerial platform.

Chapter 7. Controls

S2545 – 0410002 page 7 - 3

Page 25

Chapter 8. Prestart Inspection

Potential service and safety problems may be detected by inspecting the aerial platform every day. This chapter includes a prestart inspection table (refer to Figure 8.1) and information on properly inspecting each item listed in the table.

Perform a prestart inspection at the beginning of each shift before using the aerial platform on the

The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such accidents. Do not operate the aerial platform if it is damaged or malfunctioning.

DANGER

job. The inspection site must have a smooth and level surface. Use the prestart inspection table to ensure no areas are overlooked.

Item Inspect for

Operator’s manual In manual holder

Electrical system

Battery fluid level Battery terminals Battery charger Cables and wiring harness

Hydraulic system

Fluid level Hoses, tubes, and fittings Free-wheeling valve

Tires and wheels Good condition

Parking brakes Proper cam orientation

Ground strap In place and securely fastened

Lower control station

Operating controls Emergency stop Lowering alarm

Pothole protector interlock Proper operation

Level sensor interlock Proper operation

Emergency lowering Proper operation

Safety prop No damage or deformation

Flashing light Proper operation

Structures

Weldments Rollers and slide blocks Fasteners

Upper control station

Guardrail system

Platform extension Swing-down rails Operating controls Emergency stop Lowering alarm Drive motion alarm Battery condition indicator Lanyard anchors Horn Electrical power outlet

Placards and decals In place and readable

Proper level Clean, connections tight Proper operation No wear or physical damage

Between Full and Add marks No leaks Fully closed

Proper operation Shuts off lower controls Sounds when platform lowers

Welds intact, no damage or deformation Proper operation, no damage In place and tight

Welds intact, no damage or deformation All components in place, no damage or deformation Proper operation Fasteners in place, proper operation Proper operation Shuts off upper controls Sounds when platform lowers Sounds when aerial platform moves Proper operation No damage or deformation Sounds when activated Proper operation

Figure 8.1—Prestart Inspection Table

S2545 – 0410002 page 8 - 1

Page 26

Chapter 8. Prestart Inspection

CAUTIO

■

Operator’s Manual

Make certain the manual holder (refer to Figure

8.2) is securely fastened to the platform.

Figure 8.2—Operator’s Manual Holder

Caps

Terminals

Figure 8.3—Batteries

Replace the caps on the batteries. The caps must be in place and tight during machine operation and battery charging.

Check to see that the proper Operator’s manual is with the aerial platform. The manual should be complete with all pages intact and in readable condition.

■

Electrical System

Electrical power is supplied from 4, 240 amp, 6 volt batteries. These batteries supply 24 volt DC electrical power to operate the aerial platform electrical and electro hydraulic components.

DANGER

Even with low voltage electrical systems, severe arcing can occur. Electrical shock or component damage can result from contact with energized conductors. Use caution when working with any electrical device.

Battery Terminals

❑

Check the battery terminals and cable ends (refer to Figure 8.3). They should be clean and free of corrosion and dirt. If necessary, clean the terminals and cable ends with a wire brush or terminal cleaning tool. All cable ends must be securely fastened to the terminals.

❑

Battery Charger

Inspect the battery charger (refer to Figure 8.4) to ensure that it is operating properly.

1. Turn the battery disconnect switch off.

2. Plug the charger into a source of power.

3. Observe the reading on the ammeter. The reading should be 20 amps.

Ammeter

The batteries are in the swing-out tray on the left side of the aerial platform.

❑

Battery Fluid Level

Remove the caps from each battery (refer to Figure

8.3). Visually check the battery fluid level. If the level is not within inside each hole, add distilled water.

page 8 - 2 S2545 – 0410002

″ (6 mm) of the bottom of the filler neck

Figure 8.4—Battery Charger

Page 27

Cables and Wiring Harness

CAUTIO

❑

Inspect all cables and wiring for wear and/or physical damage such as loose connections, broken wires, and frayed insulation. Check the wiring in areas where a change in routing direction may cause them to become pinched (refer to Figure 8.5). Make sure the cables and wires are properly routed to avoid sharp edges, pinching, and scuffing.

Chapter 8. Prestart Inspection

Figure 8.6—Fluid Level Indicator

Not all hydraulic fluid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only use hydraulic fluid as recommended.

Figure 8.5—Cables and Wiring Harness

■

Hydraulic System

Hydraulic power is supplied from a single stage hydraulic pump with a 4.1 horsepower DC electrical motor.

DANGER

The hydraulic reservoir, pump, filter, and control valve is located in the hydraulic tray on the right side of the chassis.

❑

Fluid Level

Check the hydraulic fluid level with the aerial platform on a level surface and the platform stowed. The fluid level must be between the Full and Add marks as viewed on the level indicator (refer to Figure 8.6).

If necessary, remove the filler cap and add fluid of the proper type. Refer to Chapter 2—Specifications for the proper type and grade of hydraulic fluid to use. The need to regularly add fluid indicates a leak that should be corrected.

❑

Hoses, Tubes, and Fittings

Inspect all hydraulic hoses, tubes, and fittings for wear, leakage, or damage (refer to Figure 8.7). Make sure the hoses are properly routed to avoid sharp edges, kinking, and scuffing. Inspect the tubes for dents or other damage that may restrict fluid flow. Make sure all hoses and tubes are held firmly in their support brackets.

Figure 8.7—Hose, Tubes, and Fittings

Hydraulic fluid leaks are easily visible on the ground. Check under the chassis for fluid that has leaked.

S2545 – 0410002 page 8 - 3

Page 28

Chapter 8. Prestart Inspection

Free-Wheeling Valve

❑

Unlatch and swing out the hydraulic tray. The free-wheeling valve is located on the hydraulic manifold (refer to Figure 8.8). Check the free-wheeling valve to make sure it is fully closed (clockwise).

Ground Strap

Free-Wheeling Val ve

Figure 8.8—Free-Wheeling Valve

■

Tires and Wheels

Visually inspect the tires (refer to Figure 8.9). They should be smooth without any cuts, gouges, or missing rubber that might affect aerial platform stability.

Brake Engaged

Cam

Figure 8.10—Brake Release Cam

■

Ground Strap

Make certain the ground strap (refer to Figure

8.10) is securely fastened to the chassis. It should be long enough to contact the ground surface to eliminate static electricity from the machine.

■

Lower Control Station

With no personnel in the platform, test the operation of each control from the lower control station (refer to Figure 8.11).

Circuit Breaker Reset Button

Control Selector Switch

Battery Disconnect Switch

Figure 8.9—Tires and Wheels

Check the wheel lug nuts to see that none are missing or loose.

❑

Parking Brakes

Inspect the brake release cam for rust, dirt, and proper orientation. When the brakes are engaged the release cam should swing freely when pushed with a finger and be oriented as shown in Figure 8.10.

Platform Raise/Lower Switch

Figure 8.11—Lower Controls

❑

Operating Controls

Place the battery disconnect switch in the on position, lift the red emergency stop safety guard up, and push the toggle switch up to turn on the electrical power. Place the control selector in the down position to operate the aerial platform from the lower controls.

Test the operation of the platform raise/lower switch in both directions.

Low Voltage Warning Light

Emergency Stop Switch

Place the battery disconnect switch in the off position. The platform should not raise or lower with the disconnect in this position.

page 8 - 4 S2545 – 0410002

Page 29

Emergency Stop

❑

Push the red emergency stop safety guard down to turn off the electrical power. The lower control functions should not operate with the emergency stop in this position.

Lowering Alarm

❑

Raise the platform and then lower it to ensure that the alarm sounds to warn personnel in the area that the platform is lowering.

■

Pothole Protector Interlock

Perform this test using the lower controls.

1. Stow the aerial platform on a smooth, flat, level concrete slab.

2. Remove all persons and materials from the platform.

3. With the swing-out trays closed, check the ground clearance under the pothole protector skids (refer to Figure 8.12). Clearance should

be at least 3

″ on both sides of the aerial

platform.

Chapter 8. Prestart Inspection

Figure 8.13—Pothole Protector Interlock Test

7. The board will prevent the skid from lowering fully. Raise the platform while watching the skid. When the skid contacts the board, the platform should stop raising and an alarm should sound at less than seven feet platform floor height. The alarm should then sound when the platform lift switch is activated. The platform should not raise any farther.

8. Lower the platform. Place the board under the skid on the left side.

Figure 8.12—Pothole Protector Skids

4. Raise the platform while watching movement of the skids. The skids should lower to less than 1

″ ground clearance when the platform

is raised approximately 24″.

5. Fully lower the platform while watching movement of the skids. The skids should raise to their original position when the platform is lowered to approximately 24″.

6. Place a 1

″ thick board, such asa2x4,

under the skid on the right side (refer to Figure 8.13).

9. Raise the platform while watching the skid. When the skid contacts the board, the platform should stop raising and an alarm should sound at less than seven feet platform floor height. The alarm should then sound when the platform raise switch is activated. The platform should not raise any farther.

DANGER

The potential for an accident increases when safety devices do not function properly. Death or serious injury can result from such accidents. Do not alter, disable, or override any safety device.

10. If the platform raise function is not disabled, or the alarm does not sound remove the aerial platform from service until the problem is corrected.

S2545 – 0410002 page 8 - 5

Page 30

Chapter 8. Prestart Inspection

■

Level Sensor Interlock

Perform this test after verifying proper operation of the pothole protector interlock.

1. Position the aerial platform on a smooth, flat, level surface.

2. Remove all persons and materials from the platform.

3. From the lower controls, raise the platform to access the level sensor at the rear of the chassis (refer to Figure 8.14).

Level Sensor

Emergency Lowering Handle

Figure 8.15—Emergency Lowering Handle

While standing clear of the scissors structure, pull the handle outward. The platform will begin to lower as the handle is pulled. Release the handle to stop.

■

Safety Prop

Using the lower controls, raise the platform until the open height between the arm center pins is approximately 24″ (refer to Figure 8.16).

Figure 8.14—Level Sensor

4. Pull the level sensor to the side as far as possible while raising the platform. The platform should stop raising and the alarm should sound at less than 7′ (2 m) of platform elevation.

DANGER

The potential for an accident increases when safety devices do not function properly. Death or serious injury can result from such accidents. Do not alter, disable, or override any safety device.

5. If platform does not stop raising or the alarm does not sound, remove the machine from service until the problem is corrected.

■

Emergency Lowering

Using the lower controls fully raise the platform. Locate the emergency lowering handle (refer to Figure 8.15) at the front of the aerial platform.

Safety Prop

24"

Figure 8.16—Safety Prop

Swing the safety prop upward from the storage position to the support position. Inspect the safety prop for damage and deformation. Check for cracks in the welds that hold the handle and the support channel onto the tube.

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Page 31

■

Flashing Light

If the machine is equipped with the optional flashing light (refer to Figure 8.17), visually check to see that it flashes. The light should flash when the lower controls battery disconnect and emergency stop switches are on.

Flashing Light

Chapter 8. Prestart Inspection

Rollers and Slide Blocks

❑

Visually inspect the scissors arm rollers and slide blocks (refer to Figure 8.18). They must be free to move without obstruction.

Slide Block

Roller

Figure 8.18—Rollers and Slide Blocks

Figure 8.17—Flashing Light

■

Structures

Visually inspect all mechanical structures including the weldments and related components. It is important to inspect the fasteners that connect the components.

❑

Weldments

Visually inspect all weldments for abnormal wear, abrasion, or deformation that could cause interference between moving parts.

Inspect the welds on the structural components. The area to be inspected should be clean and free of dirt and grease. Look for visible cracks in the weld and at the weld to parent material joint. A bright light may be used to provide adequate visibility of the inspection area.

Pay close attention to welds in areas where changes in cross section take place and near the attachment points of highly loaded components.

Raise the platform from the lower controls to visually inspect the slide blocks underneath the front of the platform (refer to Figure 8.19).

Slide Block

Figure 8.19—Platform Slide Blocks

There is one side block on each side of the platform. The slide blocks must be in good condition and free to move without obstruction.

❑

Fasteners

Visually inspect all fasteners to see that none are missing or loose.

Pay particular attention to all of the bolts, nuts, rollpins, collars, and snap rings that connect the scissors arms. They should all be present, tight, and not damaged in any way.

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Page 32

Chapter 8. Prestart Inspection

■

Upper Control Station

Inspect the platform and upper controls only if all functions operated properly from the lower controls.

Guardrail System

❑

The guardrail system (refer to Figure 8.20) includes the top rail, mid rail, toeboards and a safety chain or optional swinging gate.

Top Rail

Mid Rail

Toeboard

Entry Chain

Figure 8.20—Guardrail System

Inspect all components of the guardrail system. The rails and toeboards must all be in place and free of any damage or deformation. Visually check the rail and toeboard welds for cracks. All bolts and nuts fastening the guardrails in place must be present and not show any signs of looseness.

Latch

Figure 8.21—Platform Extension Latch

Extend the platform and inspect the weldments for deformation and damage. Visually check the platform welds for cracks.

Swing-Down Rails

❑

Inspect the snapper and detent pins to make sure they are in place and are not deformed. There are two snapper pins and two detent pins at the front and rear of the platform. The pins must securely fasten the swing-down rails in the upright position.

❑

Operating Controls

With the aerial platform stowed, test the operation of each control from the upper control station (refer to Figure 8.22).

Inspect the lift up gate at the platform entrance to be sure it is present and securely fastened to the rail. The gate must be free of damage and deformation that may prevent if from functioning properly. Inspect the detent pins that secure the gate.

Inspect the safety chain to be sure it is present and securely fastened to the rail. The chain must be free of damage and deformation that may prevent if from functioning properly. Inspect the hook and eye that secures the chain to the rail.

Inspect the swinging gate to see that it swings freely, closes firmly, and is not deformed in any way. Make sure the latch closes and secures the gate when the gate is closed.

❑

Platform Extension

Inspect the extension latch (refer to Figure 8.21) to ensure that it properly secures the extended platform. The latch must also release to extend the platform. Extend the platform while checking for proper operation.

Low Voltage Warning Light

Horn Button

Interlock Switch

Steer Switch

Emergency Stop Button

Battery Condition Indicator

Drive/Lift Selector Switch

Joystick

Figure 8.22—Upper Controls

From the lower controls, place the battery disconnect switch in the on position and the control selector in the up position. Lift the red emergency stop safety guard up and push the toggle switch up to turn on the electrical power to the upper controls.

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Page 33

Chapter 8. Prestart Inspection

From the upper controls, test the interlock by moving the joystick without engaging the interlock switch. If movement occurs the interlock is not functioning properly. Do not operate the machine until the problem is corrected.

Place the drive/lift selector switch in the drive position and test the operation of the joystick in both directions. The lift functions should not operate with the selector in the drive position.

Place the drive/lift selector switch in the lift position and test the operation of the joystick in both directions. The drive functions should not operate with the selector in the lift position.

Emergency Stop

❑

Push the red emergency stop button in to turn off the electrical power. The upper control functions should not operate with the emergency stop in this position.

Lowering Alarm

❑

Raise the platform and then lower it to ensure that the alarm sounds to warn personnel in the area that the platform is lowering.

❑ Drive Motion Alarm

Drive in both the forward and reverse directions to ensure that the alarm sounds to warn personnel in the area that the aerial platform is in motion.

❑

Battery Condition Indicator

The optional battery condition indicator (refer to Figure 8.23) is located on the upper control panel.

Battery Condition Indicator

Lanyard Anchors

❑

If the machine is equipped with the optional lanyard anchors (refer to Figure 8.24), visually inspect them to make sure they are in place, are not deformed and are securely fastened to the platform.

Lanyard Anchor

Figure 8.24—Lanyard Anchors

There is one anchor at the front of the platform extension and one at the side of the platform.

Horn

❑

If the machine is equipped with the optional horn, depress the horn button on the left side of the upper control box (refer to Figure 8.22) to ensure that it sounds to warn personnel in the area.

❑

Electrical Power Outlet

If the machine is equipped with the optional electrical power outlet, connect a source of 125 volt AC power to the power plug. The power plug is located at the rear of the chassis near the right tire.

Some machines may have an electrical outlet at the platform, but no power-input connector. In that case, power is supplied by an optional AC generator. An external power source is not required. Plug an electrical tool into the receptacle and try to operate the tool to verify proper operation of the outlet.

The outlet may be equipped with a ground fault circuit interrupter (GFCI). Use the following procedure to test the GFCI.

1. Push the black test button (refer to Figure 8.25).

Figure 8.23—Battery Condition Indicator

With the machine set up to operate from the upper controls, check to see that the battery condition indicator gauge displays a power reading.

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Page 34

Chapter 8. Prestart Inspection

Reset Button

Figure 8.25—Electrical Power Outlet

2. Plug an electrical tool into the outlet and verify the power is off.

●

If the power was off, push the reset button to restore power.

●

If the power was on, repair or replace the receptacle.

■

Placards and Decals

Inspect all safety and operational placards and decals. Make certain they are in place, in good condition, and are legible.

Replace any missing or illegible placards or decals before operating the aerial platform. Placard and decal kits are available from Snorkel dealers.

Figure 8.26 provides the item number, Snorkel part number, description, and the quantity of each placard and decal required for standard aerial platform features.

No Part No Description Req

302326 Platform ratings

302985 Ground controls schematic

416836 Battery charger 115 volt only

300740 Danger towing instructions

480658 Danger tipover/electrical hazard

300760 Danger tipover hazard

451986 Danger do not alter switch

300694 ANSI standards

0070420 Emergency bleed down valve

475596 Caution cylinder disassembly

302950 Hydraulic oil level

583656 Danger safety prop

302844 SL 25 logo

560239 Snorkel logo 28 inch orange/black

451726 Check battery before charging

Test Button

No Part No Description Req

0070901 Caution serial number

300698 Snorkel logo 10 inch orange/black

0072545 Emergency stop

0074311 Danger cylinder failure (1 per cyl)

451776 Hydraulic fluid level

302784 Hydraulic schematic

300700 Danger shearing/crushing hazard

0073585 Made in USA

621486 Forklift

302782 Ground controls

969249 Warning stripes

302781 Platform control box top

7030002 Lube recommendations

302820 Caution - no step

Additional decals for fixed rail platforms

300699 Operator's checklist

562426 Operating manual enclosed

Additional decals for swing-down rail platforms

300699 Operator’s checklist

100

302559 Danger pinch point

101

302562 Pinch point keep clear

102

302567 Danger swing down rails

103

302568 Danger pinch point

104

969249 Warning stripes

105

562426 Operating manual enclosed

106

Figure 8.26—Standard Feature

Placards and Decals

Figure 8.27 provides the item number, Snorkel part number, description, and the quantity of each placard and decal required for optional features.

No Part No Description Req

467376 EE logo yellow (EE machines)

486006 Factory mutual (EE machines)

563066 Horn

584196 Danger fire hazard NFPA505

584216 Notice use OEM parts

0150606 125 volt 15 amp power to platform

0152251 EE logo white (EE machines)

Figure 8.27—Optional Feature

Placards and Decals

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Page 35

Chapter 8. Prestart Inspection

105

Left Side

(Both Sides)

(Inside

Platform)

102

262626

Rear

105

(Both Sides)

(Inside

Platform)

Front

2 (Inside Control Panel)

(1 Per Cyl)

Right Side

Top of Chassis

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HydraulicTray

Page 36

Chapter 8. Prestart Inspection

104

103

101 101

Rear

106

104 (Inside Platform)104 (Inside Platform)

105

103 (Both Sides) 105 (4 Places)

102

105

Main Platform Swing-Down Rails

(4 Places)

Right Side

102

(Both Sides)

100

101

Inside Front

Upper Control Box

102

(2 Places)

Platform Extension Swing-Down Rails

Right Side

Top of Second

Inner Arm

105

Outside Front

Hydraulic Oil

Reservoir

Safety Prop

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Page 37

Chapter 9. Operation

The aerial platform may be operated from either the lower or upper controls.

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Operate the aerial platform on a firm, flat, level surface. Avoid travel speeds and/or rough terrain that could cause sudden changes in platform position.

The operator bears ultimate responsibility for ensuring that the aerial platform is properly set up for the particular conditions encountered.

■

Preparing for Operation

Make certain the batteries are charged and the charger is unplugged before operating the aerial platform. Use the following procedure to prepare the aerial platform for operation.

1. Close and latch the swing-out battery and hydraulic component trays.

2. From the lower controls, place the battery disconnect switch in the on position (refer to Figure 9.1).

Control Selector Switch

Battery Disconnect Switch

3. Lift the emergency stop guard and push the toggle switch up.

4. Place the control selector switch in the lower position.

5. Operate the platform raise/lower switch to make sure the aerial platform is functioning properly.

■

Lower Controls

The lower controls override the upper controls. This means that the lower controls can always be used to operate the platform regardless of the position of the upper controls emergency stop switch.

The lower controls may be used for initial set up of the aerial platform and raising and lowering the platform while testing or inspection.

The lower controls (refer to Figure 9.1) are located on the right side of the chassis. The following are located at the lower control station.

●

Battery disconnect switch

●

Emergency stop switch

●

Control selector switch

●

Platform raise/lower switch

●

Circuit breaker reset button

●

Low voltage warning light

■

Upper Controls

The upper controls may be used for positioning the aerial platform and raising and lowering the platform while on the job.

The upper controls (refer to Figure 9.2) are located on the right side of the platform. The following are located at the upper control station.

●

Emergency stop button

●

Drive/lift selector switch

●

Low voltage warning light

●

Joystick to control platform lift, drive, and steer

The optional horn button and battery condition indicator gauge may also be located at the upper control station.

Platform Raise/Lower Switch

Emergency Stop Switch

Figure 9.1—Lower Controls

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Page 38

Chapter 9. Operation

Low Voltage Warning Light

Horn Button

Interlock Switch

Steer Switch

Emergency Stop Button

Figure 9.2—Upper Controls

Before operating from the upper controls, properly set up the aerial platform as described under Preparing for Operation. Use the following procedure to operate the aerial platform from the upper controls.

1. From the lower controls, place the control selector switch in the upper position. The upper controls will not operate while the control selector is in the lower position.

2. Enter the platform. The top rail at the platform entrance may be swung upward to load the platform if necessary. Secure the chain, or optional swinging gate, and the top rail.

3. Pull the emergency stop button outward.

4. The aerial platform may be positioned and the platform may be raised and lowered from the upper controls.

Battery Condition Indicator

Drive/Lift Selector Switch

Joystick

●

To move forward, slowly push the joystick forward until the desired speed is reached. The aerial platform may travel at three different speeds depending on how far forward the joystick is moved. The three speed ranges are separated by detents that can be felt as the joystick is moved from neutral.

●

To move backward, slowly pull the joystick backward. There is only one reverse speed.

Drive Speeds

◆

The aerial platform can travel at three different drive speeds. Drive speed ranges are interlocked through a limit switch that senses scissors arm position. When the platform is elevated below approximately seven feet, the aerial platform may be driven forward or backward at three different speeds. Above seven feet of elevation, the two fastest speeds are locked out and only the slowest drive speed will work.

DANGER

The potential for an accident increases when safety devices do not function properly. Death or serious injury can result from such accidents. Do not alter, disable, or override any safety device.

Do not use the aerial platform if it drives faster than ½ mile per hour (25′ in 30 seconds) when elevated above 7′ even if the joystick is in the mid or high speed position.

❑

Driving

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Do not drive an elevated aerial platform on soft, uneven, or sloping surfaces. Do not drive a fully stowed machine on grades that exceed 25 percent.

A fully stowed machine may be operated on grades up to 25 percent. A grade of 25 percent is a30″ (76.2 cm) vertical rise in 10′ (3.05 m) horizontal length. Use the following procedure to drive the aerial platform using the upper controls.

1. Place the drive/lift selector switch (refer to Figure 9.2) in the drive position.

2. Squeeze and hold the interlock switch against the joystick.

◆

Drive/Lift Level Sensor Interlock

When the platform is elevated above approximately seven feet, lift and drive functions are interlocked through a level sensor system. If the chassis is tilted more than two degrees side-to-side, or four degrees front-to-rear, platform raise and drive functions are disabled and an alarm sounds when those controls are activated.

If the drive/lift level sensor interlock shuts off the platform raise and drive functions, lower the platform and drive to a level surface.

Platform raise and drive functions may also be disabled by the pothole protection interlock.

❑

Steering

The steer control switch is located on the joystick (refer to Figure 9.2). Use the following procedure to steer the aerial platform using the upper controls.

1. Squeeze and hold the interlock switch against the joystick.

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Page 39

Chapter 9. Operation

●

To turn to the left, tap lightly on the left side of the steer switch.

●

To turn to the right, tap lightly on the right side of the steer switch.

NOTE

Holding the steer switch down too long may result in a sharp turn. This is especially true when driving and steering at the same time. It may be easier to turn the wheels in small increments using a series of quick taps on the steer switch.

2. Reverse the steer control direction after completing a turn to return to a straight line travel. The steering wheels are not self-centering.

Platform

❑

The platform rated work load is the total weight of the personnel and equipment that may be lifted in the platform. The work loads are stated on the platform rating placard mounted on the toeboard at the front of the platform.

●

To raise the platform, slowly push the joystick forward until the desired speed is reached. The platform can be raised at three different speeds depending on how far forward the joystick is moved. The three speed ranges are separated by detents that can be felt as the joystick is moved from neutral.

●

To lower the platform, slowly pull the joystick backward. There is only one lowering speed.

Extending

◆

The platform can be extended and securely locked into seven different positions. Use the following procedure to extend or retract the platform.

1. Stand on the non-extendible part of the platform floor, facing the front of the platform.

2. Squeeze and hold the trigger (refer to Figure

9.3) while pushing or pulling on the retractable rails.

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Do not exceed the capacity values indicated on the platform rating placard.

Capacity values indicate the rated lifting capacity and do not indicate aerial platform stability.

Use care when entering and exiting the platform to avoid slipping and/or falling. Securely close the safety chain or optional swinging gate when the platform is occupied.

DANGER

The potential for an accident increases when the swing-down rails are lowered. Death or serious injury can result from such accidents. Do not elevate the platform with the swing-down rails lowered.

Be sure the swing-down rails are up, the detent pins are engaged, and the snapper pins are installed at each corner of the platform, except when passing through a low clearance area with the platform completely lowered.

Trigger

Figure 9.3—Platform Extend Trigger

3. Release the trigger when the platform is at the desired position.

4. Try to move the rails back and forth to make sure they are locked in position.

◆

Raising and Lowering

1. Place the drive/lift selector switch (refer to Figure 9.2) in the lift position.

2. Squeeze and hold the interlock switch against the joystick.

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Page 40

Chapter 9. Operation

CAUTIO

Lift-Up Entry Gate

◆

The platform entrance has a lift-up entry gate (refer to Figure 9.4) to load large objects in the platform.

Lift-Up Gate

Snapper Pins

Detent Pins

Figure 9.4—Lift-Up Gate

To raise the gate, pull the detent pins outward and then pull up on the top rail. When the gate is fully raised the detent pins will engage to hold the gate up.

Swing-Down Rails

◆

The platform rails may be lowered 10

″ to fit the

machine under low height obstructions.

DANGER

The potential for an accident increases when the swing-down rails are lowered. Death or serious injury can result from such accidents. Do not elevate the platform with the swing-down rails lowered.

The rails are free to move downward after pulling backward on them. Improper lifting can cause personal injury. Be prepared to hold the weight of the rails (approximately 20 pounds) before beginning to lower them to the platform.

Figure 9.5—Platform Extension Release Pins

The rails are free to move when the foot is completely off its rest. Uncontrolled movement of the rails can cause personal injury. Do not move the foot more than a quarter inch (6 mm) to offset the detent pin and the hole.

3. Pull both detent pins up. With both pins up, pull back on the guardrail about ¼" (6 mm) or just enough to offset the pins from the holes.

4. Stand facing the front of the platform, grasp the handles and pull backward.

5. Lower the guardrails to the platform floor. Make sure the cables for the upper controls and the electrical outlet are not pinched.

To lower the main platform rails, use the following procedure.

1. Remove both snapper pins at the rear of the platform (refer to Figure 9.6).

Snapper Pins

The platform extension and the main platform rails must be lowered separately. Use the following procedure to lower the platform extension rails.

Detent Pins

1. Enter the platform and close the entry chain or swinging gate.

2. Remove both snapper pins at the front of the platform (refer to Figure 9.5).

page 9 - 4 S2545 – 0410002

Figure 9.6—Main Platform Release Pins

Page 41

CAUTIO

2. Pull one of the detent pins down and pull back on the guardrail about enough to offset the pin from the hole. Repeat this step for the detent pin on the other side of the entrance.

″ (6 mm) or just

Chapter 9. Operation

This system operates automatically to stop and hold the aerial platform when the drive controls are released or power is interrupted. Manually disengage the brakes before towing or winching the aerial platform as described under Towing in Chapter 11—Emergency Operation.

■

Swing-Out Trays

Batteries and hydraulic components are enclosed in swing-out trays (refer to Figure 9.8) on each side of the chassis.

3. Stand facing the rear of the platform, grasp the top rail and pull backward.

4. Lower the guardrails to the platform floor.

Use the following procedure to raise the extension and main platform rails.

1. Carefully lift upward on the rails.

2. Push the rails forward firmly to automatically seat the detent pins into their holes.

3. Check the detent pins to make sure they are properly seated.

4. Install the snapper pins with the head to the outside of the platform.

■

Brakes

Each rear wheel is equipped with a mechanical spring-applied, hydraulically released parking brake. When the drive control is in neutral, a spring-activated pin protrudes through an opening in the brake disc to prevent movement (refer to Figure 9.7). A flow control valve slows the pin movement to allow the aerial platform to stop before the parking brakes engage.

Latch

Tray

Figure 9.8—Swing-Out Tray

The tray on the right side of the chassis contains the electrical panel for the lower controls, the hydraulic directional control valve, the free-wheeling valve, reservoir, pump, and the hydraulic fluid filter. The tray on the left side contains the four batteries and the charger.

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Do not open the swing-out trays when the platform is raised more than nine feet.

To open a tray, pull up on the latch, step down on

Brake Engaged

Cam

the pothole protector skid, and swing the tray open.

If the platform is raised to approximately 24″ and the pothole protection skids are down, the trays will swing out without lowering the skids.

Figure 9.7—Mechanical Brake

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Chapter 9. Operation

■

Electrical Power Outlet

The optional electrical box has 2, 3-prong, 125 volt AC electrical connectors (refer to Figure 9.9). Their combined output is limited by a 20 amp circuit breaker.

Figure 9.9—Electrical Power Outlet

The power-input connector for the electrical outlet is located at the rear of the chassis near the right tire (refer to Figure 9.10). Plug a source of power into the power-input connector when electrical power is required at the platform.

Power-Input Connector

Figure 9.10—Power-Input Connector

Unplug the source of power before moving the aerial platform.

Some machines may have an electrical outlet at the platform, but no power-input connector. In that case, power is supplied by an optional AC generator. An external power source is not required.

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Page 43

Chapter 10. Stowing and Transporting

To prevent unauthorized use and damage, properly stow the aerial platform at the end of each work day. It must also be properly stowed while transporting.

■

Stowing

Use the following procedure to properly stow the aerial platform.

1. Retract the platform extension.

2. Fully lower the platform.

3. Close the emergency stop switch cover to activate the emergency stop switch.

4. Turn the battery disconnect switch off.

5. Padlock the battery disconnect switch.

■

Transporting

The aerial platform may be moved on a transport vehicle. Depending on the particular situation, the aerial platform may be lifted with a forklift, winched, driven, or hoisted onto a vehicle such as a truck or trailer. Lifting with a forklift is the preferred method.

DANGER

The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over accident. Do not drive on ramps that exceed 25 percent grade, or where conditions of the ramp could cause driving to be hazardous.

The user assumes all responsibility for choosing the proper method of transportation, and the proper selection and use of transportation and tie-down devices, making sure the equipment used is capable of supporting the weight of the aerial platform and that all manufacturer’s instructions and warnings, regulations and safety rules of their employer, the DOT and/or any other state or federal law are followed.

Winching

❑

Use the following procedure to winch the aerial platform onto the transport vehicle.

1. Locate the transport vehicle so the aerial platform will not roll forward after it is loaded.

2. Remove any unnecessary tools, materials, or other loose objects from the platform.

3. From the upper controls, center the aerial platform with the loading ramps and transport vehicle bed. Make sure that the steering wheels are straight.

4. Properly stow the aerial platform.

5. Use a

″ wrench to rotate each brake release

cam 90° (refer to Figure 10.1). Rotate the cam on the right brake cylinder counterclockwise and the one on the left brake cylinder clockwise. This will retract the brake pins from the wheel lugs releasing the brakes. Remove the wrench.

Use a winch to load and unload the aerial platform on ramps that exceed 25 percent grade. A 25 percent grade is a 30″ (76.2 cm) vertical rise in 10′ (3.05 m) horizontal length. A winch may also be used when poor traction, uneven surfaces, or stepped ramp transitions make driving hazardous.

Drive the aerial platform onto the transport vehicle if a winch is not available and the ramp incline is within the 20 percent grade capability of the aerial platform.

The aerial platform weighs approximately 4,700 pounds. The equipment used to load, unload, and transport the aerial platform must have adequate capacity.

Figure 10.1—Brake Release Cam

6. Unlatch and swing out the hydraulic tray. The free-wheeling valve is located on the hydraulic manifold (refer to Figure 10.2). Turn the free-wheeling valve counterclockwise to a fully opened position.

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Page 44

Chapter 10. Stowing and Transporting

Free-Wheeling Val ve

Figure 10.2—Free-Wheeling Valve

7. Attach the winch to the tie-down lugs (refer to Figure 10.3) on the front of the chassis.

Lift Lug

5. Place the joystick in speed two for climbing a ramp or speed one for descending a ramp.

6. Drive the aerial platform on or off the transport vehicle in a straight line through the grade transitions with minimal turning.

Hoisting

❑

Use the following procedure to hoist the aerial platform onto the transport vehicle.

1. Inspect the lift lugs to make sure they are free of cracks, rust, and are in good condition. There are two lugs on the rear of chassis and two on the front of chassis (refer to figure 10.3).

2. Remove all personnel, tools, materials, or other loose objects from the platform.

3. Connect chains or straps to create a four point lift using the tie-down lugs.

4. Use a spreader bar of sufficient length to keep the chains or straps from contacting the upper structure of the aerial platform.

Tie-Down Lug

Figure 10.3—Tie-Down Lugs

8. Use the winch to position the aerial platform on the transport vehicle.

9. Close the free-wheeling valve.

10. Manually reset the parking brakes using a wrench or drive the aerial platform to reset them.

❑

Driving

Use the following procedure to drive the aerial platform onto the transport vehicle.

1. Locate the transport vehicle so the aerial platform will not roll forward after it is loaded.

2. Remove any unnecessary tools, materials, or other loose objects from the platform.

3. Fully lower the platform and retract the platform extension.

5. Adjust the length of each chain or strap so the aerial platform remains level when raised off the ground.

6. Use the hoist to carefully raise and position the aerial platform onto the transport vehicle.

❑

Lifting With a Forklift

Use the following procedure to lift the aerial platform with a forklift.

1. Properly stow the aerial platform.

2. Remove all personnel, tools, materials, or other loose objects from the platform.

3. Insert the forklift forks into the pockets (refer to Figure 10.4) or at the designated points under the pothole protector skids to lift the machine.

Forklift Pocket

4. From the upper controls, center the aerial platform with the loading ramps and transport vehicle bed. Make sure that the steering wheels are straight.

page 10 - 2 S2545 – 0410002

Figure 10.4—Forklift Pockets

Page 45

4. Do not raise the aerial platform higher than

CAUTIO

necessary to transport it. Drive the forklift slowly and carefully when transporting the platform.

Securing for Transport

❑

Use the following procedure to secure the aerial platform on the transport vehicle.

1. Properly stow the aerial platform.

2. Remove all personnel, tools, materials, or other loose objects from the platform.

3. Chock the wheels.

4. Place four inch blocks under the front ends of the pothole protection skids to limit excessive loading on the front drive wheel bearings.

Ratchets, winches, and come-alongs can produce enough force to damage machine components. Do not over tighten the straps or chains when securing the aerial platform to the transport vehicle.

Chapter 10. Stowing and Transporting

5. Use chains or straps to securely fasten the aerial platform to the transport vehicle using the front and rear tie-down lugs as attachment points. Proper tie-down and hauling is the responsibility of the carrier.

S2545 – 0410002 page 10 - 3

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Chapter 11. Emergency Operation

If the aerial platform cannot be operated due to a loss of hydraulic power, such as motor or pump failure, the platform lift cylinder and drive wheels may be operated manually. Refer to the Emergency Lowering or Towing section for the appropriate procedure.

■

Emergency Lowering

Use the following procedure to manually lower the platform.

1. Retract the platform extension, if possible.

2. Locate the emergency lowering handle at the front of the aerial platform (refer to Figure 11.1).

Emergency Lowering Handle

and the one on the left brake cylinder clockwise. Remove the wrench.

Figure 11.2—Brake Release Cam

4. Unlatch and swing out the hydraulic tray. The free-wheeling valve is located on the hydraulic manifold (refer to Figure 11.3). Turn the free-wheeling valve counterclockwise to a fully opened position. Close the tray.

Figure 11.1—Emergency Lowering Handle

3. Make sure there is nothing in the way to obstruct the platform when it lowers.

DANGER

Pinch points exist on the scissors structure. Death or serious injury can result from becoming trapped within the scissors structure. Make sure all personnel stand clear while lowering the platform with the emergency lowering handle.

4. Pull the handle outward to lower the platform.

5. Release the handle to stop.

■

Towing

The aerial platform may be pushed or pulled after disengaging the brakes. Use the following procedure to manually disengage the brakes.

1. Restrain the aerial platform if it is not on a level surface to prevent movement when the brakes are released.

2. Turn the battery disconnect switch off.

3. Use a cam 90° (refer to Figure 11.2). Rotate the cam on the right brake cylinder counterclockwise

″ wrench to rotate each brake release

Free-Wheeling Val ve

Figure 11.3—Free-Wheeling Valve

5. Do not exceed two miles per hour when towing.

DANGER

The aerial platform is free to move when the brakes and free-wheeling valve are disabled. Death or serious injury can result. Close the free-wheeling valve and reset the brakes before operating the aerial platform.

6. Close the free-wheeling valve after moving the aerial platform.

7. Manually reset the parking brakes using a wrench or drive the aerial platform to reset them.

8. Verify that the brakes reset properly.

S2545 – 0410002 page 11 - 1

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Chapter 12. Troubleshooting

The chart below lists situations where machine operation may be interrupted. If the problem cannot be corrected with the action listed, stow the machine and remove it from service. Repairs must be made by qualified maintenance personnel.

■

Troubleshooting Chart

Symptom Possible Cause Corrective Action

All functions stop working. Motor or pump failure.

Manually stow the machine.

Low fluid level in reservoir.

Circuit breaker on the lower control panel has tripped.

Electrical system malfunction.

Platform will not raise or lower from lower controls.

Upper controls will not work.

Platform will not raise or lower from upper controls.

Platform will not raise and alarm is sounding.

Platform drifts down. Emergency lowering handle not

Control selector switch in the upper control position.

Battery disconnect switch turned off.

Emergency stop switch in the off position.

Emergency lowering handle not properly disengaged.

Control selector switch in the lower control position.

Battery disconnect switch turned off.

Emergency stop button pushed inward to the off position.

Drive/lift selector is in the drive position.

Emergency lowering handle not properly disengaged.

Machine is not on a level surface. Lower the platform and drive to a level

properly disengaged.

Check fluid level. Add correct type of fluid if necessary.

Press the circuit breaker reset button.

Manually stow the machine.

Place switch in the lower control position.

Place switch in the on position.

Raise safety guard and place switch in the on position.

Ensure handle returns to normal operating position.

Place switch in the upper control position.

Place switch in the on position.

Pull the emergency stop button outward to the on position.

Place switch in the lift position.

Ensure handle returns to normal operating position.

surface.

Ensure handle returns to normal operating position.

Hydraulic system malfunction.

Platform will not lower. Safety prop in place. Stow the safety prop.

Platform will not extend. Latch not fully releasing. Fully engage the platform extend trigger

Drive functions don’t work.

S2545 – 0410002 page 12 - 1

Drive/lift selector is in the lift position.

Machine is not on a level surface or too steep a grade.

Free-wheeling valve is open.

Load capacity exceeded.

Low hydraulic system pressure.

Manually stow the machine.

to release the latch before extending the platform.

Place the switch in the drive position.

Lower the platform and drive to a level surface.

Fully close the free-wheeling valve.

Remove load from platform. Refer to platform capacity placard for maximum capacity.

Manually stow the machine.

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Chapter 12. Troubleshooting

Symptom Possible Cause Corrective Action

Only slow drive speed works.

Machine will not steer. Joystick interlock switch not engaged. Engage the interlock switch before

Low voltage warning light on.

Electrical outlet does not work.

Platform elevated above seven feet. Lower platform to drive machine at mid

and high speed.

operating the steer switch.

Low battery voltage. Lower the platform, drive to recharging

area and charge the batteries.

Power supply not plugged in.

Plug in power supply at outlet at rear of chassis.

GFCI is tripped.

Wheels won’t turn when winching or pushing.

Circuit breaker will not reset.

Brakes don’t work. Brake pins not engaged. Manually release brake cams with a

Swing-out tray will not open or close.

Ammeter does not indicate a reading when charging the batteries.

Severe hydraulic leak. Failure of hose, tube, fitting, seal, etc. Manually stow the machine.

Brake pins engaged.

Free-wheeling valve closed.

Electrical system malfunction. Manually stow the machine.

Pothole protector skid in the way. Step down on skid and swing tray out.

No source of power.

Circuit breaker on the lower control panel has tripped.

Charger power fuse is blown.

Push reset button on outlet.

Rotate brake release cams to disengage brakes.

Fully open free-wheeling valve.

wrench or drive the machine to reset the brakes.

Make sure power source is plugged in and turned on.

Press the circuit breaker reset button.

Manually stow the machine.

page 12 - 2 S2545 – 0410002

Page 49

Appendix A. Glossary

aerial platform—a mobile device that has an

adjustable position platform, supported from ground level by a structure.

authorized personnel—personnel approved as assigned to perform specific duties at a specific location.

base—the relevant contact points of the aerial platform that form the stability support (e.g. wheels, casters, outriggers, stabilizers).

battery tray—a swing-out compartment that holds the batteries and battery charger.

chassis—the integral part of the aerial platform that provides mobility and support for the scissors structure.

fall restraint—a system that is used while working on a boom lift within the boundaries of platform guardrails to provide restraint from being projected upward from the platform. This system includes a harness or belt, lanyard, and a lanyard anchor. Although federal OSHA, ANSI, and Snorkel do not require the use of fall restraint on scissors lift aerial platforms, local, state, or employer rules may require their use.

free-wheeling valve—a needle valve that when adjusted open allows hydraulic fluid to flow through the wheel drive motors. This allows the aerial platform to be pushed or towed without damage to the drive motors.

gradeability—the maximum slope that the aerial platform is capable of travel.

local concentrated pressure—floor loading pressure of an aerial platform based on the maximum load exerted on one tire and the calculated footprint area of the tire. This value is of concern when the floor surface, on which the machine is being used, needs to be protected from indentations or breakage due to high pressure being exerted on a relatively small area.

lower controls—the controls located at ground level for operating some or all of the functions of the aerial platform.

maximum travel height—the maximum platform height or the most adverse configuration(s) with respect to stability in which travel is permitted by the manufacturer.

Minimum Safe Approach Distance—the minimum safe distance that electrical conductors may be approached when using the aerial platform. Also called M.S.A.D.

operation—the performance of any aerial platform functions within the scope of its specifications and in accordance with the manufacturer’s instruction, the users work rules, and all applicable governmental regulations.

overall uniform pressure—floor loading pressure of an aerial platform based on the gross vehicle weight and the rated work load. This value may be of concern when the aerial platform is used on a beam supported floor or surface. The maximum allowable floor loading pressure is determined its architect or engineer.

ground fault circuit interrupter—a fast-acting circuit breaker that opens to stop electrical circuit flow if it senses a very small current leakage to ground. Also called GFCI. The GFCI is used to protect personnel against a potential shock hazard from defective electrical tools or wiring.

guardrail system—a vertical barrier around the platform to prevent personnel from falling.

hazardous location—any location that contains, or has the potential to contain, an explosive or flammable atmosphere as defined by ANSI/NFPA

505.

hydraulic tray—a swing-out compartment that holds the electrical panel for the lower controls, the hydraulic directional control valve, the free-wheeling valve, and the hydraulic fluid reservoir, pump and filter.

personal fall arrest system—a fall protection system that is used while working on an unprotected edge (such as a roof top with no guardrail). This system includes a harness, lanyard or other connecting device, a fall arrestor, an energy absorber or decelerator, an anchorage connector, and a secure anchorage such as a building beam, girders or columns. An aerial platform is not a fall arrest anchorage.

platform—the portion of an aerial platform intended to be occupied by personnel with their tools and materials.

platform height—the vertical distance measured from the floor of the platform to the surface upon which the chassis is being supported.

pothole protection—a mechanical system intended to reduce the likelihood of aerial platform tip-over.

qualified person—a person, who by reason of knowledge, experience, or training is familiar with the operation to be performed and the hazards involved.

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Glossary

rated work load—the designed carrying capacity

of the aerial platform as specified by the manufacturer.

scissors structure—the mechanisms used to position the platform relative to the aerial platform chassis.

stow—to place a component, such as the platform, in its rest position.

unrestricted rated work load—the maximum designed carrying capacity of the aerial platform allowed by the manufacturer in all operating configurations.

upper controls—the controls located on or beside the platform used for operating some or all of the functions of the aerial platform.

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Index

AC generator, 1-1 aerial platform drive and speed, 7-2 aerial platform stability, 8-4 aerial platform steering, 7-2 American National Standards Institute (ANSI),

1-1

ammeter, 5-1, 6-1

batteries, 8-2 battery charger, 6-1 battery condition indicator, 1-1, 5-1, 7-3, 8-9,

9-1 battery disconnect switch, 7-1, 9-1 battery fluid level, 8-2 battery terminals, 8-2

cable ends, 8-2

brakes, 9-4

brake disc, 9-5 brake pin, 9-5 disengaging, 9-5 release cam, 8-4

cables and wiring harness, 8-3 Canadian Standards Association (CSA), 1-1 circuit breaker reset button, 7-1, 9-1 component identification, 2-1 control selector switch, 7-1, 9-1

DC electrical motor, 8-3 drive motion alarm, 4-1, 8-9 drive speeds, 9-2 drive/lift level sensor interlock, 4-2, 9-2 drive/lift pothole protector interlock, 4-2 drive/lift selector switch, 7-2, 9-1 driving, 9-2, 10-2

electrical overload, 7-1 electrical power, 1-1 electrical power outlet, 4-4, 8-9, 9-6

power-input connector, 9-6 electrical system, 2-2, 3-3, 8-2 electrocution hazards, 3-1 emergency lowering, 8-6, 11-1

lowering handle, 4-2, 8-6, 11-1

emergency stop, 7-1, 8-9

button, 7-2 controls, 4-1 switch, 7-1, 8-5

entering or exiting the platform, 3-2

fasteners, 8-7 flashing light, 1-1, 4-4, 8-7 free-wheeling valve, 8-4, 11-1

closing, 8-4

general maintenance, 6-1 general specifications, 2-2 gradeability, 2-2

25 percent grade, 9-2 ground clearance, 2-2, 4-2, 8-5 ground fault circuit interrupter, 8-9

reset button, 8-10

test button, 8-9 ground strap, 8-4 guardrail system, 8-8

guardrails, 4-2

mid rail, 8-8

safety chain, 8-8

swinging gate, 8-8

toeboards, 8-8

top rail, 8-8

hoisting, 10-2 horn, 1-1, 4-4, 8-9

button, 7-3, 9-1 hoses, tubes, and fittings, 8-3

routing, 8-3 hour meter, 5-1 hydraulic system, 3-3, 8-3

fluid level, 8-3

fluid recommended, 2-2

hydraulic pump, 8-3

inspection, 1-2 interlock, 8-9, 9-2

joystick

lift and steer, 7-2, 9-1

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Index

lanyard anchors, 1-1, 4-4, 8-9 level ground, 3-3 level sensor interlock, 8-6 lifting with a forklift, 10-2 loss of hydraulic power, 11-1 low voltage warning light, 7-1, 7-2, 7-3, 9-1 lower control station, 8-4 lower controls, 4-1, 7-1, 9-1 lowering alarm, 4-1, 8-5, 8-9

maintenance, 1-2 manual of responsibilities, 1-2 minimum safe approach distance, 3-1

Occupational Safety and Health Administration

(OSHA), 1-1 operation, 3-2 operator’s manual, 8-2

manual holder, 8-2 options, 1-1 overall height, stowed, 2-2 overall length, stowed, 2-2 overall width, 2-2

parking brakes, 8-4 placards and decals, 3-3, 8-10

cleaning, 3-3

Snorkel part number, 8-10 platform, 9-3

raising and lowering, 9-3 platform capacity, 3-3 platform extend trigger, 9-3 platform extension, 8-8 platform raise/lower and speed, 7-2 platform raise/lower switch, 7-1, 9-1 positioning safety prop, 4-3 pothole protector

interlock, 8-5

interlock test, 8-5

skids, 4-2 preparing for operation, 9-1, 9-2 prestart inspection, 3-2 prestart inspection table, 8-1

reservoir, 8-3

capacity, 2-2 fluid level, 8-3 level indicator, 8-3

safety alerts, 1-1 safety prop, 4-3 scissors arm rollers, 8-7 securing for transport, 10-3 slide blocks, 8-7 steering, 9-2 stowing safety prop, 4-3 stowing work platform, 10-1 structures, 8-7

mechanical, 8-7

weldments, 8-7 swinging gate, 1-1, 4-2 swing-out tray, 8-2, 9-5

latch keeper, 9-5

tie-down lugs, 10-2 tip-over and falling hazards, 3-3 tires, 2-2 toeboard height, 2-2 towing, 11-1 training, 1-1 transporting work platform, 10-1 turning radius, 2-2

upper control station, 8-8 upper controls, 4-1, 7-2, 9-1

wheel lug nuts, 8-4 winching work platform, 10-1 windy or gusty conditions, 3-3 work place inspection and practices, 3-2 working height, 2-2

rated work load, 9-3

S2545 – 0410002

Page 53

LIMITED WARRANTY

Snorkel warrants each new machine manufactured and sold by it to be free from defects in material and workmanship for a period of one (1) year fromdate of delivery to a Customer or for one year after themachine has been placed in first service in a Dealer rental fleet, whichever comes first.Any part or parts which, upon examination by the Snorkel Service Department, are found to be defective, will be replaced or repaired, at the sole discretion of Snorkel, through its local Authorized Dealer at no charge.

Snorkel further warrants the structural components; specifically, the mainframe chassis, turntable, booms and scissor arms, of each new machine manufactured by it to be free from defects in material and workmanship for an additional period of four (4) years. Any such part or parts which, upon examination by the Snorkel Service Department, are found to be defective will be replaced or repaired by Snorkelthrough its local Authorized Dealer atno charge;however,any labor charges incurred as a result of such replacement or repair will be the responsibility of the Customer or Dealer.

The Snorkel Service Department must be notified within forty-eight (48) hours of any possible warranty situation during the applicable warranty period. Personnel performing warranty repair or replacement must obtain specific approval by Snorkel Service Department prior to performing any warranty repair or replacement.

Customer and Dealer shall not be entitled to the benefits of this warranty and Snorkel shall have no obligations hereunder unless the “Pre-Delivery and Inspection Report” has been properly completed and returned to the Snorkel Service Department within ten (10) days after delivery of the Snorkel product to Customer or Dealer’s rental fleet. Snorkel must be notified, in writing, within ten (10) days, of any machine sold to a Customer from a Dealer’s rental fleet during the warranty period.

At the direction of the Snorkel Service Department, any component part(s) of Snorkel products to be replaced or repaired under this warranty program must be returned freight prepaid to the Snorkel Service Department for inspection. All warranty replacement parts will be shipped freight prepaid (standard ground) from the Snorkel Service Department or from Snorkel’s Vendor to Dealer or Customer.

REPLACEMENT PARTS WARRANTY

Any replacement or service part made or sold by Snorkel is not subject to the preceding Limited Warranty beyond the normal warranty period of the machine upon which the part was installed.

THIS WARRANTY EXCLUDES AND SNORKEL DOES NOT WARRANT:

1. Engines, motors, tires and batteries which are manufactured by suppliers to Snorkel, who furnish their own warranty. Snorkel will, however, to the extent permitted, pass through any such warranty protection to the Customer or Dealer.

2. Any Snorkel product which has been modified or altered outside Snorkel’s factory without Snorkel’s written approval, if such modification or alteration, in the sole judgment of Snorkel’s Engineering and/or Service Departments, adversely affects the stability, reliability or service life of the Snorkel product or any component thereof.

3. Any Snorkel product which has been subject to misuse, improper maintenance or accident. “Misuse” includes but is not limited to operation beyond the factory-rated load capacity and speeds. “Improper maintenance” includes but is not limited to failureto follow the recommendations contained in the Snorkel Operation,Maintenance, Repair Parts Manuals. Snorkel is not responsible for normal maintenance, service adjustments and replacements, including but not limited to hydraulic fluid, filters and lubrication.

4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the type application or type of environment in which the machine may be used; such as, but not limited to sandblasting applications.

5. Any Snorkel product that has come in direct contact with any chemical or abrasive material.

6. Incidental or consequential expenses, losses, or damages related to any part or equipment failure, including but not limited to freight cost to transport the machine to a repair facility, downtime of the machine, lost time for workers, lost orders, lost rental revenue, lost profits or increased cost.

This warranty is expressly in lieu of all other warranties, representations or liabilities of Snorkel, either expressed or implied, unless otherwise amended in writing by Snorkel’s President, Vice President-Engineering, Vice President-Sales or Vice President-Marketing.

SNORKEL MAKES NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THIS LIMITED WARRANTY. SNORKEL MAKES NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND DISCLAIMS ALL LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED TO INJURY TO PERSONS OR PROPERTY.

The Customer shall make all warranty claims through its local Authorized Dealer and should contact the Dealer from whom the Snorkel product was purchased for warranty service. Or, if unable to contact the Dealer, contact the Snorkel Service Department for further assistance.

Effective July 1995

Printed in USA

Snorkel S2545 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Chapter 1. Introduction

Chapter 2. Specifications

Chapter 3. Safety

Chapter 4. Safety Devices

Chapter 5. Gauges

Chapter 6. Batteries

Chapter 7. Controls

Chapter 8. Prestart Inspection

Chapter 9. Operation

Chapter 10. Stowing and Transporting

Chapter 11. Emergency Operation

Chapter 12. Troubleshooting

Appendix A. Glossary

Index