Rice Lake MSI-9300HT User Manual

MSI Crane Scale

Safe Rigging, Loading and Operation

Including Suggested Inspection

and Maintenance Procedures

Safety and Periodic

Maintenance Manual

153105

Contents

Technical training seminars are available through Rice Lake Weighing Systems.

Course descriptions and dates can be viewed at www.ricelake.com/training

or obtained by calling 715-234-9171 and asking for the training department.

1.0 Introduction ...................................................................... 1

1.1 Safety ............................................................................................ 2

2.0 Safe Operating Guidelines .............................................. 3

2.1 Operating Suggestions ................................................................. 3

3.0 Handling Hoist Motion ..................................................... 4

3.1 Safe Loading and Rigging Guidelines ......................................... 4

3.2 During Loading Procedures ......................................................... 5

4.0 Load Train Visual Inspection Suggestions .................... 9

4.1 Visual Inspection of Shackles ..................................................... 9

5.0 Scale Hook Inspection ................................................... 12

6.0 Recommended Preventive Maintenance ...................... 13

6.1 Initial Inspection .......................................................................... 13

6.2 Frequent and Periodic Inspection .............................................. 13

6.3 Operator Inspection .................................................................... 13

6.4 Designated Person Inspection / Manufacturer ......................... 13

6.5 Calibration ................................................................................... 13

6.6 Important Safety Information ..................................................... 13

© 2013 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.

Specifications subject to change without notice.

Rice Lake Weighing Systems is an ISO 9001 registered company.

January 2013

ii Crane Safety and Periodic Maintenance

Rice Lake continually offers web-based video training on a growing selection

of product-related topics at no cost. Visit www.ricelake.com/webinars.

1.0 Introduction

This manual has been prepared to provide information and suggestions for safe
operation, rigging, inspection, and maintenance of Measurement Systems
International (

It is not intended that the suggestions in this
plant safety rules and regulations,
crane manufacturer. However, a thorough study of the following information should
provide a better understanding of operation and afford a greater margin of safety for
personnel and machinery.

It must be recognized that this is a man
operator’s use. It is the responsibility of the owner to make personnel aware of all
federal, state and local rules and codes and to make certain that operators are properly
trained.

If you have any questions or comments please contact

MSI) Crane Scales.

manual take precedence over existing

OSHA regulations, or instructions issued by the

ual of suggestions for the crane scale

Measurement Systems International:

Phone (toll free): 1-800-874-4320

Authorized distributors and their employees can view or download this
manual from the Measurement Systems International distributor site at:

www.msiscales.com.

Introduction 1

1.1 Safety

Important

WARNING

WARNING

Safety Symbol Definitions:

Indicates a potentially hazardous situation that, if not avoided
could result in serious injury or death, and includes hazards that
are exposed when guards are removed.

Indicates information about procedures that, if not observed,
could result in damage to equipment or corruption to and loss of
data.

General Safety

Do not operate or work on this equipment unless you have read
and understand the instructions and warnings in this Manual.
Contact any Measurement Systems International dealer for
replacement manuals. Proper care is your responsibility.

Failure to heed may result in serious injury of death.
DO NOT allow minors (children) or inexperienced persons to operate this unit.
DO NOT stand near the load being lifted as it

safe distance.
DO NOT use for purposes other then weigh
DO NOT use any load bearing component that is worn beyond 5% of the original

dimension.
DO NOT use any associated lifting product i

train are cracked, deformed, or show signs of fatigue.
DO NOT exceed the rated load l

lifting structure.
DO NOT allow multi-point contact with the hook, shackle, or lifting eye of the

associated unit.
DO NOT make alterations or modifications to the unit or associated load bearing

devices.
DO NOT remove or obscure warning labels.

imit of the associated unit, rigging elements, or the

is a potential falling hazard. Keep a

t taking or dynamic load monitoring.

f any of the components of the load

2 MSI Crane Scale Safety Manual

2.0 Safe Operating Guidelines

WARNING

Before operating a MSI crane scale, the scale operator should
carefully read and study the appropriate Operation Manual
supplied by MSI and note any special instructions.

2.1 Operating Suggestions

1. Do not make lifts beyond rated load capacity of the crane scale, sling chains,
rope slings, etc.

2. Do not operate the crane scale
of defects or excessive wear.

3. Before moving the load, make certain that load
lifting devices are fully seated in the saddle of the crane scale hook with hook
latch closed.

4. At no time should a load be left suspended from the crane
operator is at the master switch or push buttons with the power on. Under this
condition keep the load as close to the floor as possible to minimize the
possibility of an injury, should the load drop. When the crane scale is holding a
load, the crane operator should remain at the master switch or push buttons.

5. When a hitcher is used, it should be the joint responsibility of the crane operator
and

the hitcher to see that hitches are secure and that all loose material has been

removed from the load before starting a lift.

6. Do not lift loads with ropes, slings, cables, chains, etc. hanging loose.

7. All ropes, slings, cables, chains, etc. sh
when not in use. (A dangling cable can inadvertently snag other objects when
the crane is moving.)

8. Operators should not maneuver a loaded crane scale

if ropes, slings, cables, chains, etc. show any sign

slings, load chains or other

scale unless the

ould be removed from the crane scale

over personnel.

Safe Operating Guidelines 3

3.0 Handling Hoist Motion

WARNING

• Capacity ratings on the Crane Scale
are for In-Line loading

• Use hardware that creates single
point attachments and allows the
scale freedom of alignment.

After the crane scale hook has been positioned over the load, lower it until the load
can be attached to the scale hook. As the scale hook approaches this level, reduce the
speed so that the lowering can be stopped smoothly and quickly.

If load slings are used to handle the load, the
saddle of the scale hook. With the scale hook latch closed, the scale hook should be
started upward slowly until all slack has been taken out of the slings. Then ensure the
load is properly balanced and the slings are properly positioned.

• Loads may disengage from crane scale hook and shackle or lifting eye if
proper procedures are not followed.

• A falling load may cause serious injury or death.

• The crane scale hook must always support t
supported by the latch.

• Never lift more than the crane scale’
rating.

• Read and understand the instructions in this manual before using the crane
scale.

3.1 Safe Loading and Rigging Guidelines

slings should be fully seated in the

he load. The load must never be

s assigned Working Load Limit (WLL)

4 MSI Crane Scale Safety Manual

Figure 3-1. In-Line Loading

3.2 During Loading Procedures

SIDE LOAD

BACK LOAD

TIP LOAD

INCORRECT

INCORRECT

INCORRECT

Do Not

Use interface hardware that is over­sized. If it restricts single point loading
and self alignment, it may result in off­axis loading.

Do Not

Push or pull a loaded scale.

Do Not

Side load, back load or tip load a crane scale hook.

Figure 3-2. Loading Procedure Precautions

Handling Hoist Motion 5

120 degrees

maximum

Load

Sling Angle

Factor

Load

L

H

• Use bottom shackle with hook for two sling
leg loading.

• Never exceed 120° included angle.

• Shackle load rating is based on vertical
axis line loading Shackle capacity
decreases as sling angle increases from
vertical axis.

Horizontal Sling

Angle(A) Degree

Sling Angle

Factor = L/H

90 1.000
60 0.866
50 0.766
45 0.707
30 0.500

Load on each leg of sling = verticle
share of load x load angle factor

Figure 3-3. Loading the Scale Hook with Multiple Sling Legs

6 MSI Crane Scale Safety Manual

Do Not

Use multiple attachments without the
proper hook up of a shackle.

Correct

Use a shackle when multiple attachments are
placed on a scale hook

GOOD PRACTICE

POOR PRACTICE

Add Washers to Shackle

Reversed Shackle

Off Center Loading

Add Washers
to center the
load

Figure 3-4. Scale with Multiple Attachments

Figure 3-5. Using a Shackle

Handling Hoist Motion 7

CORRECT

INCORRECT

Always make sure the hook

supports the load.

The latch must never

support the load.

Figure 3-6. Scale Hook with Latches

CAUSE RESULTANT DAMAGE

Heavy use Wear
Dragging across floors Wear
Shock loading Distortion
Corrosion Reduction of structural material
Corrosion Damage to threads
Welding Destruction of heat treat
Overloading Distortion
Improper use of multiple slings Distortion
Tip loading, side loadin

g, back loading Distortion

Table 3-1. Causes of Damage to Hooks, Shackles, Lifting Eyes and Load Cells

8 MSI Crane Scale Safety Manual

4.0 Load Train Visual Inspection Suggestions

WARNING

CHECK FOR WEAR

CHECK FOR WEAR
AND STRAIGHTNESS

CHECK TO INSURE
THE PIN IS SEATED

CHECK SHACKLE

FOR OPENING

CHECK FOR WEAR

• Always visually inspect scale load bearing components before using.

• Check for distortion such as bends, twists and spread.

• Inspect for wear such as peening, nicks,
damage.

• Magnetic Particle or Dye Penetrant crack detection of
train assembly should be conducted annually. If the crane scale hook, shackle or
lifting eye are painted, visual inspection should take this coating into
consideration. Surface variations can disclose evidence of heavy or severe use
that requires more detailed analysis. The surface condition may, in such
instances, call for stripping the paint.

• Annual inspection of the load sensor by an Authorized
strongly recommended.

• Do not use any load bearing component that is worn beyond 5% of original
dimension.

• Remove from service any load bearing component wi

4.1 Visual Inspection of Shackles

• Check for distortion such as bends, twists and spread.

• Look for peening, nicks and gouges.

• Inspect for cracks or corrosion.

• Check for thread damage.

gouges, cracks, corrosion and thread

all components of the load

MSI Distributor is

th a detected crack.

Figure 4-1. Shackle Field Inspection Areas

Load Train Visual Inspection Suggestions 9

Figure 4-2. Shackle with Excessive Wear

• Look for improper replacement of
pins.

• Never replace a pin with a bolt or
any other fastener.

Bent pin and elongated bow.

Figure 4-3. Improper Replacement of Pins in Shackle

Figure 4-4. Overloaded Shackle

10 MSI Crane Scale Safety Manual

Check for ear alignment.

Figure 4-5. Shackle Eye with Twist

WARNING

If any of the preceding conditions exist, remove shackle from
service.

Load Train Visual Inspection Suggestions 11

5.0 Scale Hook Inspection

CHECK FOR WEAR AND
DEFORMATION

CHECK FOR
SPREADING

CHECK FOR

CRACKS AND

TWISTING

CHECK FOR WEAR, CRACKS
AND TWISTING

10 degree 
maximum twist

• Check for wear and deformation.

WARNING

The following is a guideline to be used for the examination of scale hooks.
Common inspection methods which may be used are: visual, magnetic

dye penetrant.

Figure 5-1. Scale Hook Inspection

particle and

Figure 5-2. Scale Hook with 10 Degree Maximum Twist

Never use a hook whose throat opening has been increased, or
whose tip has been bent more than 10° out of plane from the
hook body, or is in any other way distorted or bent.

A latch will not work properly on a hook with a bent or worn tip.

12 MSI Crane Scale Safety Manual

6.0 Recommended Preventive Maintenance

WARNING

6.1 Initial Inspection

Prior to use, all crane scale hook and shackle or lifting eyes should be inspected.

6.2 Frequent and Periodic Inspection

Inspection procedures and record keeping requirements for crane scale hook shackle
and lifting eyes in regular service shall be governed by the type of equipment with
which they are used.

6.3 Operator Inspection

Visual examination by the operator or other designated person; records not required.

Normal ______ Monthly
Heavy _______ Weekly

6.4 Designated Person Inspection / Manufacturer

Visual inspections by a designated person making records of apparent external
conditions to provide the basis for continuing evaluation.

Normal ______ Annual
Heavy _______ Semiannual
Severe _______ Quarterly

6.5 Calibration

Normal ______ Annual
Heavy _______ Semiannual

6.6 Important Safety Information

Repairs of cracks, nicks and gouges shall be carried out by an authorized designated
person. All other repairs should be performed by the manufacturer.

Never repair, alter, rework or reshape any load
burning, heating or bending. Remove from service any load bearing component with
wear or repair that reduces the original dimension by more than

Magnetic Particle and/or Dye Penetrant Inspection and Surface Preparation

Inspect scale hook, shackle and lifting eye wi
penetrant annually, or more often in severe operating conditions.

Annual inspection of load sensor by an authorized MSI Distributor is strongly
re

commended.

Loads imposed on this product should never exceed the
maximum rated capacity shown and apply only to uniform direct

shock loads should be avoided. Damage caused by such, are outside of our
warranty. Inspection for wear and cracks on all load bearing components should
be conducted annually.

Load bearing components showing d
of defective components may result in catastrophic failure and personal injury.

Unless authorized by the factory in writing, changes
such as cutting, welding or permanently attaching other material or products
cancels all warranty.

tension loading. Off-axis loading, bending, side loading and

efects should be discarded. Continued use

Recommended Preventive Maintenance 13

bearing component by: welding,

5%.

th magnetic particle and/or dye

by anyone except the factory

14 MSI Crane Scale Safety Manual

A RICE LAKE WEIGHING SYSTEMS COMPANY

Measurement Systems

International

TM

14240 Interurban Avenue South Suite 200 Ɣ Seattle, WA 98168-4661 Ɣ USA

Phone: [phone] Ɣ Fax: [phone]

© 2013 Rice Lake Weighing Systems

January 2013 153105