P/N 0191482
December, 2000
DANGER
ELECTRICAL HAZARD
The TB 120 is an all metal boom, NOT ELECTRICALLY INSULATED, aerial work platform. Do
not operate it near ELECTRICAL conductors. Regard all conductors as being energized. Use
the table and figure below to determine safe clearance from electrical conductors. Table 1 and
Figure 3 are reprinted courtesy of Scaffold Industry Association, ANSI/SIA A95, page 23.
Table 1 - Minimum safe approach distance (M.S.A.D.)
to energized (exposed or insulated) power lines
Voltage range
(phase to phase)
0 to 300V Avoid contact
Over 300V to 50KV 10 3.05
Over 50KV to 200KV 15 4.60
Over 200KV to 350KV 20 6.10
Over 350KV to 500KV 25 7.62
Over 500KV to 750KV 35 10.67
Over 750KV to 1000KV 45 13.72
Minimum safe approach distance
(Feet) (Meters)
Danger: - Do not allow machine personnel or conductive
materials inside prohibited zone.
- Maintain M.S.A.D. from all energized lines and parts
as well as those shown.
- Assume all electrical parts and wires are energized
unless known otherwise.
Caution: - Diagrams shown are only for purposes of illustrating
M.S.A.D. work positions, not all work positions.
Figure 3 - Minimum Safe Approach Distance (M.S.A.D.)
P/N 0191482
DANGER
ELECTRICAL HAZARD
THE TB 120 AERIAL WORK PLATFORM IS NOT
ELECTRICALLY INSULATED.
If the platform, booms, or any other conductive part of a TB 120 contacts a highvoltage electrical conductor, the result can be
persons on or near the machine.
GO NO CLOSER THAN THE MINIMUM SAFE APPROACH
DISTANCES ON THE OPPOSITE PAGE.
Be sure to allow for sag and sway in the wires and the work platform.
If a TB 120 comes in contact with a live electrical conductor, the entire machine
can be charged. If that happens, you should remain on the machine and not
contact any other structure or object within reach. That includes the ground,
adjacent buildings, poles, and any object not a part of the TB 120. Such contact
could make your body a conductor to the other object creating an electrical
shock hazard resulting in
or leave the TB 120 until you are sure the electricity has been turned off.
SERIOUS INJURY
SERIOUS INJURY
DEATH
or
. Do not attempt to enter
or
DEATH
for
If a TB 120 is in contact with a live conductor, the platform operator
others on the ground in the vicinity of the TB 120 to
machine, since their bodies can also form a path for electricity to ground thus
creating an electrical shock hazard with possible
DEATH
Do not attempt to operate the TB 120 ground controls when the platform, booms,
or any other conducting part of a TB 120 is in contact with electrical wires or if
there is an immediate danger of such contact.
Regard all conductors as energized.
Personnel working on or near a TB 120 must be continuously aware of electrical
hazards, recognizing that
an electrical wire does occur.
.
SERIOUS INJURY
or
STAY AWAY
ELECTROCUTION
DEATH
can result if contact with
MUST
from the
and
warn
P/N 0191482
i
TABLE OF CONTENTS
TABLE OF CONTENTS
INTRODUCTION..................................... v
SIGNS............................................... v
TYPE-STYLE CONVENTIONS.......... v
QUALIFIED OPERATORS................. v
MAINTENANCE................................. vi
RESPONSIBILITIES OF PARTIES.... vi
ADDITIONAL INFORMATION ........... vi
1. SAFETY .............................................. 1 - 1
SAFE OPERATION ........................... 1 - 1
Pre-start Inspection........................ 1 - 1
Work Place
Electrocution .................................. 1 - 2
Tipover & Falling Hazards.............. 1 - 2
Crushing......................................... 1 - 2
GENERAL SAFETY PRECAUTIONS .. 1 - 2
Personnel Precautions................... 1 - 2
Operator General Precautions........ 1 - 2
Mounting & Dismounting Precautions
Starting and Stopping Precautions. 1 - 3
Operating Precautions.................... 1 - 3
Operator Maintenance Precautions......
Fuel Handling Precautions ............. 1 - 3
SAFETY DECALS & PLACARDS...... 1 - 3
Inspection and Practices
.... 1 - 1
.. 1 - 3
1 - 3
4. GAUGES............................................. 4 - 1
AMPS
ENGINE OIL...................................... 4 - 1
FILTER MINDER
FUEL................................................. 4 - 2
HOURS
HYDRAULIC OIL FILTER.................. 4 - 2
HYDRAULIC OIL LEVEL................... 4 - 3
HYDRAULIC OIL TEMPERATURE ... 4 - 3
TEMPERATURE
5. AUTOMATIC SHUT-OFFS
& CIRCUIT BREAKERS ..................... 5 - 1
AUTOMATIC SHUT-OFFS................ 5 - 1
CIRCUIT BREAKERS........................ 5 - 1
6. CONTROLS ........................................ 6 - 1
GROUND-CONTROL BOX ............... 6 - 2
PLATFORM-CONTROL BOX............ 6 - 4
CHASSIS........................................... 6 - 6
TURNTABLE..................................... 6 - 6
................................................ 4 - 1
............................... 4 - 1
............................................. 4 - 2
................................ 4 - 3
Engine Temperature ...................... 5 - 1
Engine Oil Pressure....................... 5 - 1
Alternator Not Charging ................. 5 - 1
2. SAFETY DEVICES .............................. 2 - 1
DRIVING LIGHTS (option)................. 2 - 1
EMERGENCY STOP
EMS LIGHTS & AUDIO ALARMS...... 2 - 2
EMS TABLE....................................... 2 - 3
EXTENDIBLE-AXLE INTERLOCKS... 2 - 3
FLASHING LIGHTS (option).............. 2 - 3
FOOT SWITCH ................................. 2 - 4
GFCI OUTLET................................... 2 - 4
GRAVITY GATE................................ 2 - 4
GROUND OPERATION
GUARDRAILS ................................... 2 - 5
HORN................................................ 2 - 5
LANYARD ANCHOR POINTS ........... 2 - 5
MOTION ALARM (option).................. 2 - 5
PLATFORM WORK LIGHTS (option) .. 2 - 5
SELF-CLOSING GATE (option)......... 2 - 5
TILT ALARM HORN, SIREN, & LIGHT 2 - 6
3. SPECIFICATIONS............................... 3 - 1
GENERAL SPECIFICATIONS........... 3 - 1
PLATFORM SPECIFICATIONS......... 3 - 1
ENGINE DATA.................................. 3 - 2
ENGINE OIL CHARTS....................... 3 - 2
OVERALL DIMENSIONS................... 3 - 3
WORKING ENVELOPE..................... 3 - 4
SERIAL-NUMBER LOCATIONS........ 3 - 5
CHASSIS NOMENCLATURE ............ 3 - 5
TURNTABLE & BOOM NOMENCLATURE
SWITCHES..... 2 - 1
SWITCH...... 2 - 4
. 3 - 5
7. OPERATION....................................... 7 - 1
CONTROL STATIONS...................... 7 - 1
EMERGENCY STOPPING................ 7 - 1
STARTING FROM THE GROUND-
CONTROL BOX.............................. 7 - 1
Pre-start Conditions ....................... 7 - 1
Starting (from the ground).............. 7 - 2
STARTING FROM THE PLAT FORM-
CONTROL BOX.............................. 7 - 3
Pre-start Conditions ....................... 7 - 3
Starting (from the platform)............ 7 - 4
MOVING THE PLATFORM................ 7 - 5
MOVING THE TB 120 ....................... 7 - 8
STEERING........................................ 7 - 8
ELECTRICAL OUTLET AT
THE PLATFORM (GFCI)................. 7 - 8
EXTEND & LOCK REAR AXLES....... 7 - 9
RETRACT & LOCK REAR AXLES .... 7 - 11
8. EMERGENCY OPERATION ............... 8 - 1
EMERGENCY OPERATION FROM
THE PLATFORM-CONTROL BOX.. 8 - 1
EMERGENCY OPERATION FROM
THE GROUND-CONTROL BOX ..... 8 - 3
9. STOWING & TRANSPORTING .......... 9 - 1
STOWING......................................... 9 - 1
TRANSPORTING.............................. 9 - 1
Trailering ........................................ 9 - 1
Securing to a Transport Vehicle..... 9 - 2
Towing........................................... 9 - 4
ii
P/N 0191482
TABLE OF CONTENTS
10. DAILY INSPECTION &
MAINTENANCE..............................10 - 1
DAILY INSPECTION AND
MAINTENANCE TABLE..................10 - 1
PLACARDS AND DECALS
INSPECTION CHART 1..................10 - 12
PLACARDS AND DECALS
INSPECTION DRAWING 1.............10 - 13
PLACARDS AND DECALS
INSPECTION CHART 2..................10 - 14
PLACARDS AND DECALS
INSPECTION DRAWING 2.............10 - 15
11. TROUBLESHOOTING...................... 11 - 1
12. OPTIONS..........................................12 - 1
AC GENERATOR..............................12 - 1
AIR LINE TO PLATFORM.................12 - 1
COLD WEATHER START KIT..........12 - 2
Block Heaters................................12 - 2
Ether Injection................................12 - 2
DRIVING LIGHTS.............................12 - 2
FLASHING LIGHTS ..........................12 - 3
HYDRAULIC SYSTEM COLD
WEATHER WARM-UP KIT.............12 - 3
MOTION ALARM...............................12 - 3
PLATFORM WORK LIGHTS.............12 - 3
SELF-CLOSING GATE.....................12 - 4
SPARK ARRESTOR.........................12 - 4
TOW KIT...........................................12 - 4
13. FIRE FIGHTING & HAZARDOUS
CHEMICAL CONTAINMENT............ 13 - 1
ANTI-FREEZE ..................................13 - 1
BATTERY, LEAD/ACID..................... 13 - 1
DIESEL FUEL................................... 13 - 1
FOAM IN TIRES ............................... 13 - 1
GASOLINE........................................13 - 2
HYDRAULIC OIL............................... 13 - 2
LIQUEFIED PETROLEUM GAS........13 - 2
MOTOR OIL...................................... 13 - 2
INDEX..................................................... I - 1
WARRANTY.........................inside back cover
CALIFORNIA PROPOSITION 65.....back cover
P/N 091482
iii (iv blank)
INTRODUCTION
INTRODUCTION
The most important chapter in t his manual is
“1. SAFETY.” Take time, now, to study it
closely. The information in that chapt er m ight
save your life or prevent serious injury.
SIGNS
The following two conventions are used
throughout this manual.
1. This sign
DANGER
means:
is involved
2. This sign
Attention! Become alert! Your safety
.
CAUTION
means one of two things: (1) an act ion, about t o
be performed, is potentially hazardous and
might result in minor per sonal inj ur y if not done
correctly, or (2) an action, about to be
performed, can damage the TB 120 if not done
correctly.
Training is essential and must be performed by
a QUALIFIED person. Become proficient in
knowledge and actual operation before using
the TB 120 on the job. You must be tr ained and
authorized to perform any funct ions of the TB
120. Operation of the T B 120 m ust be within
the scope of the machine specificat ions.
Before operating the T B 120 you must r ead and
understand the operating instruct ions in this
manual as well as the decals, warnings, and
instructions on the machine itself.
Before operating the TB 120 you must be
AUTHORIZED by the person in charge to
do so.
The following rules will help ensure the
safety of personnel and help prevent
needless downtime because of damaged
equipment.
1. Only TRAINED and AUTHORIZED operators
shall be permitted to operate the eq uipm ent .
2. All manufacturer’s operating instructions and
safety rules and all employers’ safety rules and
all OSHA and other government safety rules
must be strictly adhered to.
3. Repairs and adjustments shall be made only
by QUALIFIED TRAINED maintenance
personnel.
TYPE-STYLE CONVENTIONS
Throughout this manual the nam es of switches
and gauges as well as the names of switch
positions (ON/OFF, etc.) ar e capit alized.
Furthermore, switch and gauge names ar e
printed in bold type and, when they occur in
section titles, are italicized. The purpose of all
this is to emphasize the exact name of the
switch, gauge, or switch position and thus
reduce ambiguity.
Some paragraphs in this manual are print ed in
italic. Those paragraphs apply to optional
equipment. If your T B 120 does not have the
optional equipment ignore the par agraphs.
QUALIFIED OPERATORS
The TB 120 aerial platfor m has built-in safety
features and has been factory tested for
compliance with Snorkel specifications and
industry standards. However, any personnellifting device can be potentially dangerous in
the hands of untrained or careless operat or s.
4. No modification shall be made to the
equipment without prior written consent of
Snorkel.
5. You must make a pre-star t inspection of the
TB 120 at the beginning of each shift. A
malfunctioning machine must not be used.
6. You must make an inspection of the work
place to locate possible hazards before
operating the TB 120.
DANGER
Misuse of this machine can result in DEATH
or SERIOUS INJURY.
Do not operate this equipment unless you
are TRAINED and AUTHORIZED and have
read and thoroughly understand all
information given in this Operator’s Manual
and on all DANGER and CAUTION signs on
the machine.
P/N 0191482
v
INTRODUCTION
MAINTENANCE
ADDITIONAL INFORMATION
Every person who maintains, inspects, tests, or
repairs these machines, and every person
supervising any of these functions, must be
properly trained.
This Operator’s Manual provides a daily
inspection procedure that will help you keep
your TB 120 in good operating condition. Do
not perform other m aint enance unless you are
a TRAINED mechanic, QUALIFIED t o work on
the TB 120. Call QUALIFIED maint enance
personnel if you find problems or malfunctions.
Information contained in this manual concerns
only current TB 120’s, and the right is reserved
to make changes at any time without obligation.
RESPONSIBILITIES OF PARTIES
It is imperative that all owners and users of the
TB 120 read, understand, and confor m to all
applicable regulations. Ultimate com pliance to
OSHA regulations is the responsibility of the
employer using the equipment.
For additional information, contact your local
dealer, or write:
Snorkel International, I nc.
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
http://www.snorkelusa.com
ANSI Standard A92.5 identifies r equirements of
all parties who might be involved with BoomSupported Elevating Work Platf or m s .
A reprint of the “
Dealers, Owners, Users, O per at ors, Lessors
and Lessees of ANSI/SIA A92.5-1992 BoomSupported Elevating Work Platf o r m s
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
Manual of Responsibilities for
” is
vi
P/N 0191482
1. SAFETY
1. SAFETY
SAFE OPERATION
The following safety inf o r m a t ion is vitally
important for safe operation of the TB 120.
Failure to follow these instructions can result in
personal injury or DEATH.
Pre-start Inspection
Prior to each shift, t he TB 120 shall be given a
visual inspection and function test. See the
“DAILY INSPECTION & MAINT ENANCE”
chapter in this manual for a list of items to
inspect and test.
Do not operate the TB 120 unless you are
trained and authorized, understand the operation
characteristics of the TB 120, and have
inspected and tested all functions to be sure t hey
are in proper working order. See the “DAILY
INSPECTION & MAINTENANCE” chapter.
Work Place Inspection and Practices
Do not use the TB 120 as a ground for welding.
Ground to the work piece.
Before the TB 120 is used, and during use,
check the area in which the TB 120 is to be used
for possible hazards such as, but not limited t o:
• drop-offs or holes,
• side slopes,
• bumps and floor obstructions,
• debris,
• overhead obstructions and electrical
conductors,
• hazardous locations,
• inadequate surface and support to withstand
all load forces imposed by the aerial platform
in all operating configur at ions,
• wind and weather conditions,
• presence of unauthorized persons,
• other possible unsafe conditions.
Before using the aerial plat form in any hazardous
(classified) location, make cer tain it is approved
and of the type required by ANSI/ NFPA 505 for
use in that particular location.
A recommended safety practice is to have
personnel that are trained in the operation of the
emergency controls working in the imm ediat e
area of the TB 120 to assist the platform
operator in the event of an emerg ency.
When moving the platform, check t he clear ance
around the TB 120 to avoid contact with
structures or other hazards. Always look in the
direction of motion.
Keep ground personnel from under t he platform
when the platform is raised.
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 loose objects stored in or on the
machine, particularly in the platfo r m . Rem o ve all
objects which do not belong in or on the
machine.
Do not engage in any form of “horseplay” or
“stunt driving” while operating the TB 120.
Do not permit riders on the machine anyplace
other than on the platform .
When other moving equipment is in the area,
take special precautions to comply to local
regulations regarding warnings.
Never steady the platform by positioning it
against another platfor m .
Do not operate a TB 120 that is not functioning
properly, or has been damaged, until the
machine has been repaired by a qualified
maintenance person.
Do not operate a TB 120 that does not have all
its decals and placards attached and legible.
Drive the machine with care and at speeds
compatible with conditions. Use extra caution
when driving over rough ground, on slopes, and
when turning.
Know and understand the job site traffic-flow
patterns and obey the flagmen, r oad signs, and
signals.
Watch for bystanders and never allow anyone to
be under, or to reach through, the machine and
its equipment while operating.
Use the recommended transport device when
loading the machine.
P/N 0191482
1 - 1
1. SAFETY
Electrocution
The TB 120 is an all-metal boom, NO NINSULATED, aerial work-platform. Do not
operate it near ELECTRICAL conductors.
Regard all conductors as being energized.
Do not carry loads from any point outside of t he
platform.
Care shall be taken to prevent rope, elect r ic
cords, and hoses from becoming entangled in
the aerial platform.
Do not operate outside during a thunderst or m.
Tipover & Falling Hazards
Do not operate a TB 120 from a posit ion on
trucks, trailers, railway cars, floating vessels,
scaffolds, or similar equipment unless the
application is approved in writing by Snorkel.
If the platfor m or elevating assembly becomes
caught, snagged, or otherwise prevented from
normal motion by an adjacent structure or other
obstacles such that control reversal does not f r ee
the platform, r em o ve all personnel from the
platform before attempts are made to f r ee the
platform using gr ound controls.
Under normal working conditions it is best not to
transfer from the platform to another st r ucture or
vice versa, unless that is the safest way to do the
job. Each situation must be judg ed separ at ely
taking the work environment into account . The
following guidelines apply:
Where possible, place t he work platform
•
over a roof or walking structur e t o do the
transfer.
Transfer your anchorage from one structure
•
to another before you step across.
Remember that you might be transferring to
•
structure where
required.
personal fall arrest
is
Maintain a firm footing on t he platform floor .
Climbing on the guardrails is prohibited.
Do not use ladders, planks, or other devices to
extend or increase your work position from the
platform.
Do not jerk the controls. Move the controls slowly
and deliberately to avoid jerky and erratic
operation. Always stop the controls in the neutral,
off, position before going in the opposite
direction.
Do not use the boom for any purpose other than
to position personnel, their tools, and materials.
Do not use the TB 120 as a crane, hoist, or j ack.
Do not operate the TB 120 in winds, or wind
gusts, of 28 mph (45 km/h) or more.
Do not add anything to the TB 120 that will
increase the wind loading (billboards, banners,
flags, etc).
Crushing
Always look in the direction of travel. Avoid
overhead obstructions.
Never cover the floor grating or ot her wise
obstruct your view below.
Make sure the area below the platform is f r ee of
personnel before lowering.
Use the platform entrance, do not climb over
•
the rails.
All platform occupants MUST wear a fall r estraint
device connected to a lanyard anchor point.
Do not exceed the unrestricted platfor m capacit y
shown on the platform.
Do not raise the boom if the T B 120 is on soft
ground. Operate the boom only on a f ir m sur face
capable of withstanding all load forces imposed
by the aerial platform in all operat ing conditions.
Raise the platform only when the TB 120 is on
level ground.
1 - 2
GENERAL SAFETY PRECAUTIONS
Personnel Precautions
If you encounter any suspected malfunction of
the aerial platform, or any hazard or pot entially
unsafe condition relating to capacity, int ended
use, or safe operation, cease operat ion and seek
assistance from management.
Operator General Precautions
Make sure that all protective guards, cowlings,
and doors are in place and secure.
Be sure the guardrail system, including t he gate,
is in place and secure.
P/N 0191482
Mounting & Dismounting Precautions
Use three points of support (e. g., two hands and
one foot) when getting on or off the platfor m.
1. SAFETY
Use extreme caution when removing radiator
caps. Park the machine and let it cool down
before opening a pressurized compartment.
Keep the platform clean.
Do not jump off t he m achine.
Do not dismount while the machine is in motion.
Starting and Stopping Precautions
Do not start until all personnel are clearly away
from the machine.
Before leaving the operator’s stat ion, place the
machine in the stowed position.
When leaving the m achine par ked or
unattended, remove the starter key from the
MASTER KEY SWITCH
switch to OFF, then lock the
Operating Precautions
Do not modify the TB 120 in any way.
When parts or com ponents are replaced, they
shall be identical or equivalent to original Snor kel
parts or components.
Do not override any of the safety feat ur es of the
TB 120.
Limit travel speeds according to conditions. Take
into account: grade, surface, congestion,
visibility, side slope, location of personnel, and
other hazards.
Operator Maintenance Precautions
Do not use your hand to search for hydraulic oil
leaks. High pressure hydraulic oil can easily cut
and penetrate your skin — a very serious injury
that requires immediate at t ention by a medical
specialist trained in that type of injur y. Use a
piece of cardboard or wood to search for
hydraulic oil leaks.
Do not attempt repairs unless you are trained.
Refer to manuals and experienced repair
personnel for help.
Charge batteries in a well-ventilated area free of
flame, sparks, or ot her hazards t hat might cause
fire or explosion.
, set the
BATTERY
BATTERY
switch.
Fuel Handling Precautions
Do not smoke or permit open f lam es while
fueling or near f ueling operations.
Never remove the fuel cap or refuel a g asoline
engine while the engine is running or hot. Never
allow fuel to spill on hot machine components.
Maintain control of the fuel filler nozzle when
filling the tank.
Do not fill the fuel tank to capacity. Allow room
for expansion.
Clean up spilled fuel immediately.
Tighten the fuel tank cap securely. If the f uel cap
is lost, replace it with an approved cap from
Snorkel. Use of a non-approved cap without
proper venting may result in pressurization of the
tank.
Never use fuel for cleaning purposes.
For diesel engines, use the correct fuel grade for
the operating season.
SAFETY DECALS & PLACARDS
There are several safety decals and placards on
the TB 120. Their locations and descriptions are
shown in this section. Take time to study them.
Be sure that all the safety decals and placards
on the TB 120 are legible. Clean or replace them
if you cannot read the words or see the pictures.
Clean with soap & water and a soft cloth. Do not
use solvents.
You must replace a decal or placard if it is
damaged, missing, or cannot be r ead. If it is on a
part that is replaced, make sur e a new decal or
placard is installed on the replaced part. See
your Snorkel dealer for new decals and placards.
Refer to PLACARDS AND DECALS
INSPECTION CHARTs and DRAWINGs in the
“DAILY INSPECTION AND MAINT ENANCE”
chapter for part number s, locat ion, and r equired
quantities of all placards and decals.
P/N 0191482
1 - 3
1. SAFETY
Refer to PLACARDS AND DECALS INSPECTION CHART and DRAWING in the “DAILY
INSPECTION & MAINTENANCE” chapter for part numbers, locations, and required
quantities of all placards and decals.
1 - 4
P/N 0191482
1. SAFETY
P/N 0191482
1 - 5
1. SAFETY
1 - 6
P/N 0191482
For emergency operation controls and
procedures, see the “EMERGENCY
OPERATION” chapter in t his m anual.
The devices listed in this chapter are safety
devices. They are on a TB 120 to increase safety
in the work place for both the operat or and ot her
people near a TB 120. Do not by-pass, disable,
modify, or ignore any of these devices. Check
them carefully at the start of each work shift to
see that they are in working order (see “DAI LY
INSPECTION & MAINTENANCE” chapter) . I f
any is found to be defective, remove the TB 120
from service immediately until a q ualified service
technician can make repairs.
DRIVING LIGHTS (option)
2. SAFETY DEVICES
EMERGENCY STOP
At the ground-control box: Press the red
EMERGENCY STOP button in, at any time,
under any conditions, and the entire machine
stops, the engine turns of f, the brakes
automatically set, and nothing moves. This
switch must be pulled out for anything on the T B
120 to work.
2. SAFETY DEVICES
SWITCHES
Two 30 watt headlights are located on top of the
front cowling.
Two 25 watt blinking taillights are on the sides of
the rear cowlings. Driving light s help im pr ove
your visibility and help others see you when you
are driving on dimly lit construction sites. Dr iving
lights are not for driving on public t hor oughfares.
For more informat ion about dr iving lights see the
“OPTIONS” chapter .
At the platform-control box: Press the large
red EMERGENCY STOP button down and the
entire machine stops, the engine tur ns off, the
brakes automatically set, and nothing m oves.
This switch must be pulled to its up (out) position
to control the TB 120 from the platform.
NOTE: The ground- control box is designed to
override the platform-control box. If the
platform-control box EMERGENCY STOP
button is down (off) the g r ound-control box
can still be used to start and operate the T B
120.
P/N 0191482
2 - 1
2. SAFETY DEVICES
EMS LIGHTS & AUDIO ALARMS
There are six envelope management system
(EMS) lights on a TB 120.
Three are on the instrument panel.
whether or not the envelope management
system is operating correctly.
NOTE: EMS lights on the platform-control box
have the same names as those on the
instrument panel even though they are not
labeled on the platform-control box.
In addition to EMS lights there are EMS audio
alarms.
A second identical set of three is on the platformcontrol box.
Two are above the instrument panel.
Two are on the bottom of the platform-control
box. The audio alarms emit various sounds to
alert the operator to unsaf e condit ions. The audio
alarms and EMS lights work toget her t o give
valuable safety information. The t able below
summarizes that information.
EMS ENVELOPE
The
information about where the platf or m is located
relative to the platform’s working envelope. ( See
the “SPECIFICATIONS” chapt er for the TB 120
working envelope.) The
EMS WARNING
lights (1) give the operator
EMS STATUS
lights (3) tell the operator
(2) and
2 - 2
NOTE: When a TB 120 engine first st arts, the
EMS self-test will briefly sound all EMS audio
alarms and briefly turn all six EMS lights on to
check that they work. Af ter the brief EMS selftest, conditions in the table below prevail.
P/N 0191482
2. SAFETY DEVICES
EMS TABLE
LIGHT CONDITION AUDIO ALARM
GREEN
EMS
STATUS
WHITE
EMS
ENVELOPE
RED
EMS
WARNI NG
ON
: Machine is ready for normal operation.
FLASHING
technician.
OFF
: Platform is well inside the working envelope.
FLASHING
working envelope.
ON
: Platform is at t he limits of the working envelope.
ON
: EMS error detected. Press the red
light completely in and release it
WARNING
procedures described in the “EMERGENCY
OPERATION” chapter t o lower t he plat form.
FLASHING
envelope. Move boom into working envelope.
: Calibration error. Notify qualified service
DO NOT USE MACHINE
: Platform is less than 3 feet (1 m) inside the
light stays on, use the emergency
: Platform is outside t he lim its of the working
.
slowly
EMS WARNING
. If the red
None.
None.
None.
None.
None.
Continuous tone.
EMS
Beeping
EXTENDIBLE-AXLE INTERLOCKS
The left and right r ear axles of a TB 120 must
be extended and locked for safe-work ing
machine stability. The booms cannot be raised
or extended unless the axles are completely
extended and locked into place. Instructions for
extending and locking the axles are given in the
“OPERATION” chapter .
FLASHING LIGHTS
The flashing lights alert people that the TB 120
is present. The lights flash at about one flash
per second anytime the engine is running.
There is no ON/OFF switch for the flashing
lights.
(option)
P/N 0191482
2 - 3
2. SAFETY DEVICES
FOOT SWITCH
DANGER
Serious injury can result from sudden
stops. To avoid sudden stops, do not
remove your foot from the foot switch w hi l e
the TB 120 is in motion.
The foot switch prevents the platf or m from
moving if something accidentally pushes one of
the platform-moving controls on the platformcontrol box. (Stepping on the foot switch is an
action that must be performed, at the same
time as another, to make t he plat form move.)
NOTE: See “ELECTRI CAL O UTLET AT
THE PLATFORM (GFCI)” in the
“OPERATION” chapter for more infor mation
about how to use the GFCI.
GRAVITY GATE
The gravity gate (1) is the place in the platform
guardrail system where you should enter and
leave the platform. Raise the gate and step
under it onto the platform . Once you have
entered the platform and at tached your fall
restraint lanyard to an anchor point (2), check
to see that the gravity gate (1) has fallen back
into place.
GROUND OPERATION
SWITCH
GFCI OUTLET
The GFCI (Ground Fault Circuit Interrupt)
protects against electricity flowing to ground.
When electricity flows to ground the GFCI shuts
off power to the electrical outlets.
To use the outlets, connect the power-input
connector, inside the left-r ear of the turntable,
to a source of 125 V ac, 15 A electrical power.
NOTE: If the TB 120 has the optional ac
generator, plug the power-input connect or
(inside the left-rear of the turntable) into the
generator. Then, set the
MACHINE/GENERATOR
platform-control box, to GENERATOR.
switch, on the
The
GROUND OPERATION
the platform from moving if somet hing
accidentally pushes one of the platform-moving
switches at the ground-control box. (Manually
holding the
is an action that must be performed, at the
same time as another, to mak e t he platform
move.)
GROUND OPERATION
switch prevents
switch up
42 -
P/N 0191482
GUARDRAILS
The guardrails help protect you f r om falling off
the platform. Be sure t he guardrails are
properly installed and that the gate is in place.
HORN
2. SAFETY DEVICES
LANYARD ANCHOR POINTS
All personnel on the platform shall connect their
fall restraint lanyards to one of the lanyard
anchor points.
MOTION ALARM (option)
The motion alarm emits a loud beeping sound
at ground level anytime the
controller is in FORWARD or REVERSE. This
alarm alerts people on the ground that the TB
120 is traveling along the ground.
DRIVE/STEER
The operator
the attention of people on the g round when you
are working aloft. The horn itself is located
below the tilt alarm sensor, it is the sam e horn
used to sound the tilt alarm. For the horn to
work the
following switches, on the ground-control box,
must be set as indicated:
SELECTOR SWITCH
EMERGENCY STOP
MASTER KEY SWITCH
HORN t
BATTERY
is used primarily to get
switch must be ON and the
..........PLATFORM
...............pulled out
....................ON
PLATFORM WORK LIGHTS (option)
The platform work lig ht s are located on top the
platform guard rail. Use the lights to impr ove
visibility when you are working aloft in dimly lit
areas. Do not use the platform work lights to
drive on public thoroughfares.
P/N 0191482
For more informat ion about platform work lights
see the “OPTIONS” chapter .
5 2 -
2. SAFETY DEVICES
SELF-CLOSING GATE (option)
The self-closing g ate is designed to
automatically close after you enter or leave the
platform. It helps prevent people from falling off
the platform.
TILT-ALARM HORN, SIREN, & LIGHT
There is one tilt-alarm sir en, one tilt-alarm horn,
and one tilt-alarm warning light on a TB 120.
The tilt-alarm warning light is on the platform control box.
The siren will emit a two-toned sound (high-lowhigh-low...) if the TB 120 is tilted more than 3.5
(7 inch rise in 10 foot run / 18 cm rise in 3 m
run) and the booms are above horizontal or
extended more than 7 feet (2 m). The warning
light will come on and the horn will emit a
continuous sound at the same time the siren
sounds.
NOTE: The platf o r m siren will not sound if
the TB 120 is being controlled fr om the
ground-control box.
°
The siren (1) is located under the platformcontrol box.
3
After the siren and/or hor n begins to sound, if
the tilt continues to increase, the TB 120 can tip
over. When you are in contr ol of a TB 120 and
you hear either of these two warning sounds, or
see the warning light come on, you should
immediately:
1. Stop using the
on the platform-control box.
2. Completely retract and complet ely lower the
booms.
3. Use the platform-control box
controller to move the TB 120 to a level surface
or more firm gr ound before extending or raising
the booms again.
DRIVE/STEER
controller stick
DRIVE/STEER
2
The horn (2) is located inside the left-rear of the
turntable, under the tilt alarm sensor (3).
62 -
P/N 0191482
3. SPECIFICATIONS
3. SPECIFICATIONS
The Snorkelift T B 120 is a boom - s uppor t ed
elevating work-platfor m built to conform to the
following standards:
OSHA Paragraph 1910.67 Title 29, C.F.R.,
Vehicle-Mounted Elevating and Rotating Work
Platforms - Labor.
OSHA Paragraph 1926.556 Title 29, C.F.R.,
Aerial Lifts - Construction.
ANSI Standard A92.5-1992, Boom-Suppor ted
Elevating Wo r k Platforms.
GENERAL SPECIFICATIONS
Working height (nominal).....126 ft - 0 in (38.4 m)
Platform height ( maximum)..120 f t - 0 in (36.6 m)
Platform reach (maximum).....62 ft - 0 in (18.9 m)
Length
(booms down and retracted)..42 ft - 4 in (12.9 m)
Width:
axles retracted.........................8 ft - 6 in (2.6 m)
axles extended.....................12 ft - 10 in (3.9 m)
Height (booms down)...............10 ft - 0 in (3.0 m)
Wheelbase...............................12 ft - 0 in (3.7 m)
Ground clearance ...........................13 in (33 cm)
Tailswing:
rear axles stowed ....................6.54 ft (1.99 m)
rear axles extended.................4.38 ft (1.33 m)
Weight (approximate)......... 39,500 lb (17,917 kg)
Ground pressure, max..
Wheel load, max. single..... 19,750 lbs (8,977 kg)
Travel speeds (max.) (See “CONTROLS”
chapter for explanation of sett ings for diff er ent
speeds.):
booms down and retracted
high speed, low torque ......3.0 mph (4.8 km/h)
mid speed, mid torque.......1.5 mph (2.4 km/h)
high torque, low speed ....0.75 mph (1.2 km/h)
booms up and/or extended
to mid elevation...............0.75 mph (1.2 km/h)
above mid elevation................................creep
Gradeability ...................................................25%
.................87
psi
(600 kPa)
Turning radius
outside................................33 ft - 0 in (10.0 m )
inside, axles retracted............22 ft - 0 in (6.7 m)
inside, axles extended...........20 ft - 0 in (6.1 m)
Tires (foam filled)
..............18 x 22 in (46 X 56 cm), 18 ply or radial
Electrical system. . .12 V dc (neg. chassis ground)
Environmental operating ranges:
ambient air temperature ..............0°F to +110°F
(-18°C to +43°C)
wind speed
(maximum gust or steady).....28 mph (45 km/h)
Fuel tank capacity:
std. gasoline/diesel........ 40 gal USA (151 liters)
optional LPG.......................43.5 lb USA (20 kg)
Hydraulic oil:
tank capacity ................. 60 gal USA (227 liters)
maximum temperature (at tank)... 200°F (93°C)
system capacity............. 90 gal USA (341 liters)
maximum pressure........ 2,800 psi (19,320 kPa)
Hydraulic oil recommended:
above 10°F (-13°C) Mobil DTE 13M (ISO VG32)
below 10°F (-13°C) Mobil DTE 11M (ISO VG15)
Boom elevation...................+75°/-1° to horizontal
Boom movement times in seconds (complete
range of movement):
Turntable Swing
360° CW or CCW,
boom retracted.................110 - 120 seconds
boom extended................320 - 330 seconds
Platform Rotation
180° CW or CCW,..................16 - 20 seconds
Main Boom Elevation
UP (boom retracted).............90 - 120 seconds
UP (boom extended)...........150 -180 seconds
DOWN (boom retracted) .....90 - 120 seconds
DOWN (boom extended).....150 -180 seconds
Boom Extension
OUT...................................130 - 160 seconds
IN.......................................130 - 160 seconds
PLATFORM SPECIFICATIONS
Unrestricted rated work load (total weight of personnel, tools,
SIZE
PLATFORM
standard aluminum 30 x 92 (76 x 234) Rated work load: 500 lbs (227 kg)
P/N 0191482
inches (cm)
and materials that the platform is designed to carry above its
floor when the platform is within its working envelope -- same
as UNRESTRICTED PLATFORM CAPACITY)
Rated number of occupants: 2 people
3 - 1
3. SPECIFICATIONS
ENGINE DATA
ENGINE MAKE CONTINENTAL CONTINENTAL CUMMINS
MODEL TM27 4B3.9
FUEL gasoline LPG diesel
FUEL GRADE unleaded
85 octane
(motor method)
COOLANT 50% water + 50% ethylene glycol
OPERATING TEMPERATURE
OIL SUMP CAPACITY 6 qt USA
OIL FILTER CAPACIT Y 1 qt USA
OIL GRADE API: SE, SF, SE/CD, SF/CD API: CE/SF, CD/SF
OIL W EI G HT see chart below see chart below
RUNNING TIME One full tank of gasoline or diesel will last an entire eight hour shift,
ENGINE OIL CHARTS
180°F - 202°F
(81°C - 94°C)
(5.7 liters)
(0.95 liters)
under normal working conditions. It nor mally takes between one and
two tanks of LPG per eight hour shift.
HD5
Gas Processors
Association Standard
2140
Category: special
duty propane
ASTM No. 2 D
Cetane # > 40
(For operating temp.
below 32°F / 0°C use
“winterized” No. 2 D.)
141°F - 211°F
(60°C - 100°C)
10 qt USA
(9.5 liters)
CONTINENTAL ENGINE CUMMINS ENGINE
3 - 2
P/N 0191482
OVERALL DIMENSIONS
3. SPECIFICATIONS
P/N 0191482
3 - 3
3. SPECIFICATIONS
WORKING ENVELOPE
3 - 4
P/N 0191482
3. SPECIFICATIONS
SERIAL-NUMBER LOCATIONS
Serial Numbers are located in five places.
1. Above the ground-control box on a placard.
(The last four digit s ar e month and year
shipped.)
2. On the back-right of the counterweight.
CHASSIS NOMENCLATURE
TURNTABLE & BOOM
NOMENCLATURE
3. On a placard on the platform br ace, above
the platform anchor points. ( Last four digits are
mo. and yr. shipped.)
4. Below the drain hole in the turntable.
5. At the weld behind the rotation bearing tur r et .
NOTE: If t he t urntable is rotated 180° its
FRONT is above the REAR of the chassis.
P/N 0191482
3 - 5 (3 - 6 blank)
3 - 5
4. GAUGES
4. GAUGES
AMPS
The AMPS g auge shows the electric current
from the alternator t o the batteries. When the
engine is running, the needle in the AMPS gauge
should not be to the left of “ 0. ” Under normal
operating conditions, after the engine has been
running for a few minutes, this gauge should
read “0.”
ENGINE OIL
CONTINENTAL CUMMINS
CONTINENTAL CUMMINS
4
3
Engine oil level should always be in the crosshatched area (3) (4) of t he dipst ick — never
above or below it. Check the oil level after the
engine has been turned off a few minutes so that
oil can run down out of the engine into the sump.
FILTER MINDER
2
Engine oil level is measured with a dipstick (1)
(2). Oil sump and oil filt er capacities given in the
“SPECIFICATIONS” chapt er are approximate.
True values may vary from machine to machine
due to slight variations or modifications dur ing
production. The oil dipstick is the only way to
accurately gauge if the engine oil level is correct.
The air filter g auge (1) (FILTER MI NDER) is
located just above the ground-control box. T he
gauge measures the vacuum (air pressur e)
between the intake manifold and t he air filter. As
the filter clogs, t he vacuum increases (pressure
drops). As the vacuum increases, the yellow
indicator (2) raises toward the red area (3) of the
sight glass. When the yellow indicator reaches
the red, it’s time to chang e the air filter.
The indicator (2) stays at its highest setting, it
does not go to the bottom of the sight glass
when the engine is turned off. After the f ilter is
changed, press the small RESET button (4) t o
reset the indicator disk to the bottom of the sight
glass.
P/N 0191482
4 - 1
4. GAUGES
FUEL
4
The fuel gauge (1) is locat ed on top of the
gasoline or diesel fuel tank (2), inside the frontright of the tu r nt able. Read it at the line (3) in the
clear plastic window (4). It reads in fractions-of-afull-tank. T he t ank shown is a little more than 1/4
full.
NOTE: Do not run a diesel fuel tank dry. Air in
the fuel line makes a diesel engine hard to
start.
3
1
2
1
HOURS
The
HOURS
It accumulates time when:
BATTERY
SELECTOR SWITCH
MASTER KEY SWITCH
Or when:
BATTERY
SELECTOR SWITCH
ANTI-RESTART
MASTER SWITCH
The
HOURS
when it is time to perform t he periodic
maintenance listed in the Maintenance Manual.
gauge is basically an electric clock.
........................ ON
...... GROUND
.. ON.
........................ ON
...... PLATFORM
......... ON.
gauge cannot be reset. Use it t o t ell
2
(OPTION - LPG) LPG t anks have two fuel
gauges (1) (2) on top. One measures correctly
when the tank is standing on end (
the other measures correctly when the tank is
laying down (
fractions-of- a- full-tank. TB 120 t anks are
mounted horizontally. Therefore, you should read
the
HORIZONTAL
HORIZONTAL
scale (2).
). Both read in
VERTICAL
)
HYDRAULIC OIL FILTER
The hydraulic-oil filter g auge (1) is located above
the hydraulic-oil filter (2) . The gauge measures
pressure into the filter. As the filter clogs, the
pressure goes up.
4 - 2
P/N 0191482
The hydraulic-oil filter g auge should only be read
)
by qualified trained maintenance personnel. An
accurate reading requires very special conditions
and should not be attempted by operators.
HYDRAULIC OIL LEVEL
TEMPERATURE
4. GAUGES
The hydraulic-oil level gauge (1) is on the side of
the hydraulic oil tank. It shows the actual level of
oil inside the tank. Read it only when the booms
are completely down and completely retracted.
Otherwise, the lift and/or extend cylinders
become large reservoirs for hydraulic oil and t he
oil level in the tank will be low. The oil level (2)
should be between the high mark (3) and low
mark (4).
HYDRAULIC OIL TEMPERATURE
The
TEMPERATURE
above the ground-control box. It shows the
temperature of the water- ant ifreeze mixture in
the engine block. The typical operatingtemperature range for a Continental engine is
180°F to 202°F (81°C to 94°C); for a Cum m ins
engine, 141°F to 211°F (60°C - 100°C).
gauge is located just
The hydraulic-oil temperature gauge (1) is inside
the hydraulic-oil level gauge. It m easur es t h e
temperature of the oil in t he t ank (2). The
temperature should not exceed 200°F (93°C). If it
does, reduce your driving speed or stop the TB
120 to let the hydraulic oil cool.
P/N 0191482
4 - 3 (4 - 4 blank
4 - 3
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