Blue Giant EPS-22 Manual de usuario

OWNER’S MANUAL

EPS-22 POWERED STRADDLE TRUCK

ISSUE DATE:APRIL 3, 2014 REV.0 (PART # 038-925E)

WARNING

Do not operate or service this product unless you have

read and fully understand the entire contents of this

manual. Failure to do so may result in property damage,

bodily injury or death.

WARNING

Do not operate this truck unless you have been autho-

rized and trained to do so, and have read all warnings

and instructions in Operator’s Manual and on this

truck.

Do not operate this truck until you have checked its

condition. Give special attention to tires, horn, battery,

controller, lift system (including forks or attachments,

chains, cables and limit switches), brakes, steering

mechanism, guards and safety devices.

Operate truck only from designated operating position.

Never place any part of your body into the mast struc-

ture or between the mast and the truck. Do not carry

passengers. Keep feet clear of truck and wear foot

protection.

Observe applicable traffic regulations. Yield right of

way to pedestrians. Slow down and sound horn at

cross aisles and wherever vision is obstructed.

Start, stop, travel, steer and brake smoothly. Slow

down for turns and on uneven or slippery surfaces that

could cause truck to slide or overturn. Use special

care when traveling without load as the risk of overturn

may be greater.

Travel with lifting mechanism as low as possible.

Always look in direction of travel. Keep a clear view,

and when load interferes with visibility, travel with load

trailing.

Use special care when operating on ramps travel

slowly, and do not angle or turn. Travel with load

downhill.

Do not overload truck. Check nameplate for capacity

and load center information.

When using forks, space forks as far apart as load will

permit. Before lifting, be sure load is centered, forks

are completely under load, and load is as far back as

possible against load backrest.

Do not handle unstable or loosely stacked loads. Use

special care when handling long, high or wide loads, to

avoid losing the load, striking bystanders, or tipping

the truck.

Do not handle loads which are higher than the load

backrest or load backrest extension unless load is

secured so that no part of it could fall backward.

Elevate forks or other lifting mechanism only to pick up

or stack a load. Watch out for obstructions, especially

overhead.

Do not lift personnel except on a securely attached

specially designed work platform. USE EXTREME

CARE WHEN LIFTING PERSONNEL. Make sure

mast is vertical, place truck controls in neutral and

apply brakes. Lift and lower smoothly. Remain in oper-

ating position or immediate vicinity as long as person-

nel are on the work platform. Never transport

personnel on forks or work platform.

Do not allow anyone to stand or pass under load or lift-

ing mechanism.

When leaving truck, neutralize travel control, fully

lower lifting mechanism and set brake. When leaving

truck unattended, also shut off power.

TABLE OF CONTENTS

BG-S22-0812 i

Section Page Section Page

1 DESCRIPTION ............................................................1-1

1-1. INTRODUCTION. .........................................1-1

1-2. GENERAL DESCRIPTION. ..........................1-1

1-3. SAFETY FEATURES....................................1-1

2 OPERATION ...............................................................2-1

2-1. GENERAL.....................................................2-1

2-2. OPERATING PRECAUTIONS......................2-1

2-3. BEFORE OPERATION.................................2-2

2-4. GENERAL CONTROL OPERATION............2-4

2-5. DRIVING AND STOPPING PROCEDURES.2-4

2-5.1. STOPPING ...................................................2-4

2-6. BELLY-BUTTON SWITCH............................2-5

2-7. STEERING ARM GAS SPRING. ..................2-5

2-8. LIFT AND LOWER CONTROLS...................2-5

2-9. LOADING AND UNLOADING.......................2-5

2-10. PARKING......................................................2-5

3 PLANNED MAINTENANCE ........................................3-1

3-1. GENERAL.....................................................3-1

3-2. MONTHLY AND QUARTERLY CHECKS.....3-1

3-3. BATTERY CARE. .........................................3-1

3-3.1. GENERAL ....................................................3-1

3-3.2. SAFETY RULES...........................................3-2

3-3.3. BATTERY CARE AND CHARGING .............3-2

3-3.4. BATTERY CLEANING..................................3-2

3-3.5. MAINTENANCE FREE BATTERIES............3-2

3-4. CHARGING BATTERIES..............................3-3

3-5. CHARGING BATTERIES..............................3-3

3-6. LUBRICATION..............................................3-4

3-7. LIFT CHAIN MAINTENANCE. ......................3-4

4 TROUBLESHOOTING ................................................4-1

4-1. GENERAL.....................................................4-1

4-2. CONTROLLER TROUBLESHOOTING ........4-4

4-2.1. FAULT DETECTION. ...................................4-4

4-2.2. HAND HELD PROGRAMMER (OPTIONAL)4-4

4-2.3. FAULT RECORDING. ..................................4-4

4-2.4. GENERAL CHECKOUT. ..............................4-4

4-2.5. DIAGNOSTIC HISTORY ..............................4-6

4-2.6. TEST THE FAULT DETECTION

CIRCUITRY ..................................................4-6

4-2.7. PROGRAMMABLE PARAMETERS .............4-6

4-2.8. DIAGNOSTICS AND

TROUBLESHOOTING. .............................4-15

4-2.9. PROGRAMMER DIAGNOSTICS ...............4-15

5 STEERING ARM, CONTROL HEAD AND

COMPARTMENT ........................................................5-1

5-1. CONTROL HEAD .........................................5-1

5-1.1. CAP ASSEMBLY REMOVAL. ......................5-1

5-1.2. CAP ASSEMBLY INSTALLATION. ..............5-2

5-1.3. CONTROL HEAD REMOVAL ......................5-3

5-1.4. CONTROL HEAD INSTALLATION ..............5-3

5-1.5. SPEED POTENTIOMETER

REPLACEMENT...........................................5-3

5-1.6. BELLY-BUTTON SWITCH

REPLACEMENT...........................................5-3

5-1.7. HORN SWITCH REPLACEMENT. .............. 5-4

5-1.8. LIFT AND LOWER SWITCH

REPLACEMENT. ......................................... 5-6

5-2. STEERING ARM .......................................... 5-6

5-2.1. RETURN SPRING REPLACEMENT. .......... 5-6

5-2.2. STEERING ARM REMOVAL. ...................... 5-6

5-2.3. STEERING ARM INSTALLATION. .............. 5-6

5-3. COMPARTMENT COVERS ......................... 5-6

5-3.1. REMOVAL. .................................................. 5-6

5-3.2. INSTALLATION. .......................................... 5-6

5-4. MONO MAST COVER ................................. 5-7

5-4.1. REMOVAL. .................................................. 5-7

5-4.2. INSTALLATION. .......................................... 5-7

6 BRAKE SERVICING ................................................... 6-1

6-1. BRAKES....................................................... 6-1

6-1.1. BRAKE ASSEMBLY REPLACEMENT ........ 6-1

7 TRANSMISSION, DRIVE WHEEL, LOAD WHEEL .... 7-1

7-1. DRIVE WHEEL. ........................................... 7-1

7-2. TRANSMISSION.......................................... 7-1

7-3. LOAD WHEEL.............................................. 7-3

7-3.1. REMOVAL ................................................... 7-3

7-3.2. REPAIR....................................................... 7-3

7-3.3. LOAD WHEEL INSTALLATION................... 7-3

8 ELEVATION SYSTEM SERVICING ........................... 8-1

8-1. GENERAL. ................................................... 8-1

8-2. LIFT CHAIN LENGTH ADJUSTMENT......... 8-1

8-2.1. MONO.......................................................... 8-1

8-2.2. TELESCOPIC .............................................. 8-2

8-3. LIFT CHAIN WEAR INSPECTION............... 8-2

8-4. LIFT CHAIN REPLACEMENT...................... 8-3

8-4.1. MONO.......................................................... 8-3

8-4.2. TELESCOPIC .............................................. 8-3

8-5. LIFT CYLINDERS. ....................................... 8-3

9 HYDRAULIC SYSTEM SERVICING........................... 9-1

9-1. LINES AND FITTINGS................................. 9-1

9-2. HYDRAULIC PUMP, MOTOR, AND

RESERVOIR ASSY ..................................... 9-2

9-2.1. REMOVAL ................................................... 9-3

9-2.2. DISASSEMBLY AND REASSEMBLY.......... 9-3

9-2.3. INSTALLATION ........................................... 9-3

9-3. LIFT CYLINDER (MONO) ............................ 9-3

9-3.1. REMOVAL ................................................... 9-3

9-3.2. REPAIR........................................................ 9-5

9-3.3. INSTALLATION ........................................... 9-5

9-4. LIFT CYLINDER (TELESCOPIC)................. 9-6

9-4.1. REMOVAL ................................................... 9-6

9-4.2. REPAIR........................................................ 9-6

9-4.3. INSTALLATION ........................................... 9-8

10 ELECTRICAL COMPONENTS ................................. 10-1

10-1. ELECTRICAL CONTROL PANEL.............. 10-1

10-1.1. MAINTENANCE......................................... 10-1

10-1.2. CLEANING................................................. 10-1

10-1.3. CONTROLLER REMOVAL........................ 10-1

10-1.4. CONTROLLER INSTALLATION................ 10-1

TABLE OF CONTENTS

ii BG-S22-0812

Section Page Section Page

10-1.5. CHARGER REMOVAL. ............................. 10-1

10-1.6. CHARGER INSTALLATION....................... 10-1

10-1.7. COOLING FAN REMOVAL (MONO). ........ 10-4

10-1.8. COOLING FAN INSTALLATION (MONO). 10-4

10-1.9. BUZZER REMOVAL. ................................. 10-4

10-1.10. BUZZER INSTALLATION. ......................... 10-4

10-1.11. KEY SWITCH REMOVAL. ......................... 10-4

10-1.12. KEY SWITCH INSTALLATION. ................. 10-4

10-1.13. BATTERY INDICATOR REMOVAL. .......... 10-4

10-1.14. BATTERY INDICATOR INSTALLATION. .. 10-4

10-1.15. LED INDICATOR REMOVAL..................... 10-5

10-1.16. LED INDICATOR INSTALLATION............. 10-5

10-1.17. EMERGENCY DISCONNECT REMOVAL. 10-5

10-1.18. EMERGENCY DISCONNECT

INSTALLATION..........................................10-5

10-1.19. LIFT LIMIT SWITCH REMOVAL. ...............10-5

10-1.20. LIFT LIMIT SWITCH INSTALLATION. .......10-5

10-2. PUMP MOTOR. ..........................................10-5

10-3. DRIVE MOTOR. .........................................10-5

10-4. DEADMAN SWITCH...................................10-6

11 OPTIONAL EQUIPMENT..........................................11-1

11-1. LOAD BACKREST...................................... 11-1

12 ILLUSTRATED PARTS BREAKDOWN ....................12-1

LIST OF ILLUSTRATIONS

Figure Page Figure Page

1-1 NAME PLATE....................................................... 1-1

1-2 S22 LIFT TRUCK ................................................. 1-2

2-1 LOAD CENTER .................................................... 2-1

2-2 SAMPLE OF OPERATOR CHECK LIST.............. 2-3

2-3 FORWARD/REVERSE CONTROL ...................... 2-4

2-4 PUSHBUTTON SWITCHES................................. 2-4

2-5 BRAKE ACTUATION............................................ 2-5

2-6 BELLY-BUTTON SWITCH ................................... 2-5

3-1 BATTERY CHARGING......................................... 3-3

3-2 BATTERY CHARGING......................................... 3-4

3-3 BATTERY CHARGING......................................... 3-4

3-4 LUBRICATION DIAGRAM.................................... 3-5

4-1 CONTROLLER TERMINALS ............................... 4-4

4-2 HAND HELD PROGRAMMER ............................. 4-4

5-1 CONTROL HEAD ................................................. 5-1

5-2 STEERING ARM .................................................. 5-2

5-3 EMERGENCY REVERSE SWITCH ASSEMBLY. 5-4

5-4 CAP ASSEMBLY.................................................. 5-5

6-1 TRANSMISSION, MOTOR, BRAKE ASSEMBLY 6-2

7-1 TRANSMISSION, MOTOR, BRAKE MOUNTING 7-2

8-1 CHAIN ASSEMBLY (MONO) ............................... 8-1

8-2 CHAIN ASSEMBLY (TELESCOPIC).................... 8-2

9-1 HYDRAULIC SYSTEM (MONO) .......................... 9-1

9-2 HYDRAULIC SYSTEM (TELESCOPIC)............... 9-2

9-3 ELEVATION SYSTEM (MONO) ........................... 9-4

9-4 LIFT CYLINDER (MONO) .................................... 9-5

9-5 LIFT CYLINDER (TELESCOPIC)......................... 9-6

9-6 ELEVATION SYSTEM (TELESCOPIC) ............... 9-7

10-1 ELECTRICAL SYSTEM (MONO) ....................... 10-2

10-2 ELECTRICAL SYSTEM (TELESCOPIC)............ 10-3

12-1 STEERING SYSTEM.......................................... 12-2

12-2 CONTROL HEAD ............................................... 12-4

12-3 CAP ASSEMBLY ................................................ 12-6

12-4 EMERGENCY REVERSE SWITCH ASSEMBLY 12-8

12-5 TRANSMISSION, MOTOR, BRAKE ASSEMBLY. 12-

12-6 COMPARTMENT, MONO................................. 12-12

12-7 COMPARTMENT, TELESCOPIC ..................... 12-14

12-8 ADJUSTABLE STRADDLE, MONO ................. 12-16

2-9 ADJUSTABLE STRADDLE, TELESCOPIC...... 12-18

12-10 CASTER ........................................................... 12-20

12-11 ELEVATION SYSTEM (MONO) ....................... 12-22

12-12 ELEVATION SYSTEM (TELESCOPIC)............ 12-24

12-13 LIFT CARRIAGE (MONO) ................................ 12-26

12-14 LIFT CARRIAGE (TELESCOPIC)..................... 12-28

12-15 CHAIN ASSEMBLY (MONO)............................ 12-30

12-16 CHAIN ASSEMBLY (TELESCOPIC) ................ 12-31

12-17 HYDRAULIC SYSTEM (MONO)....................... 12-32

12-18 HYDRAULIC SYSTEM (TELESCOPIC) ........... 12-33

12-19 PUMP & MOTOR ASSY ................................... 12-34

12-20 LIFT CYLINDER (MONO)................................. 12-36

12-21 LIFT CYLINDER (TELESCOPIC) ..................... 12-37

12-22 ELECTRICAL SYSTEM (MONO) ..................... 12-38

12-23 ELECTRICAL SYSTEM (TELESCOPIC).......... 12-40

12-24 WIRING HARNESS (MONO)............................ 12-42

12-25 WIRING HARNESS (TELESCOPIC) ................ 12-43

12-26 WIRING CABLES (MONO)............................... 12-44

12-27 WIRING CABLES (TELESCOPIC) ................... 12-45

LIST OF TABLES

Table Page Table Page

2-1 OPERATOR CHECKS........................................... 2-2

3-1 MONTHLY AND QUARTERLY INSPECTION

AND SERVICE CHART ......................................... 3-1

3-2 RECOMMENDED LUBRICANTS .......................... 3-4

3-3 LUBRICATION CHART ......................................... 3-5

4-1 TROUBLESHOOTING CHART..............................4-1

4-2 PROGRAMMABLE PARAMETERS.......................4-7

4-3 LED CODES ........................................................4-15

4-4 TROUBLESHOOTING CHART............................ 4-16

BG-S22-0812 1-1

SECTION 1

DESCRIPTION

1-1. INTRODUCTION.

This publication describes the 24 volt transistor

S22 lift truck distributed by Big Lift LLC. Included are

operating instructions, planned maintenance instruc-

tions, lubrication procedures, corrective maintenance

procedures and a complete parts list with part location

illustrations.

Users shall comply with all requirements indicated in

applicable OSHA standards and current edition of

A.N.S.I. B56.1 Part II. By following these requirements

and the recommendations contained in this manual,

you will receive many years of dependable service

from your S22 lift truck.

1-2. GENERAL DESCRIPTION.

The self-propelled S22 truck, Figure 1-2, lifts and

transports payloads up to 2200 pounds on adjustable

forks.

The S22 Mono truck has a 62 inch lift. The S22 Tele-

scopic truck has either a 96 or 116 inch lift.

The forward and reverse motion is controlled by either

of two controller levers mounted on the control head.

Stopping and turning is controlled by the steering arm.

Lift and Lower is controlled by pushbuttons on the con-

trol head. The battery powered lift truck is quiet and

without exhaust fumes.

The reversible AC motor propels the lift truck in for-

ward or reverse direction throughout the available

speed range. The S22 lift truck can be driven with

forks raised or lowered; however, the speed is

restricted when the platform is raised above a preset

limit.

The model number will be found on the name plate

(Figure 1-1) along with the serial number, lifting capac-

ity, and load center. Figure 1-2 shows the locations of

the truck’s main components and controls.

1-3. SAFETY FEATURES.

The S22 is designed engineered to provide maximum

safety for operator and payload. Some of the safety

features incorporated into the design are:

Figure 1-1 Name Plate

• Dead-man brake to apply the brake and cut off drive

power when the steering arm is released.

• Emergency brake switch to apply the brake and cut

off drive power when depressed.

• Belly-button switch to reverse truck should the oper-

ator accidentally pin himself against a wall or

obstruction when backing up in slow speed.

• High speed limit switch to restrict speed when lift

carriage is raised above the preset limit.

• All control functions automatically return to “OFF”

when released.

• Externally accessible emergency stop switch within

operator's reach.

• Separately fused control circuits and power circuits.

• Readily accessible horn button.

• Lift carriage backrest to help stabilize the load.

• Handle to provide a firm hand hold for operator.

• Flow control valve regulates maximum lowering

speed within prescribed limits.

• Relief valve maintains hydraulic pressure within pre-

scribed limits.

• High visibility color scheme of truck provides visual

alert of truck’s presence.

• Battery Indicator

•Caster.

COMPLIES WITH THE APPLICABLE REQUIRE-COMPLIES WITH THE APPLICABLE REQUIRE-

MENTS OF ANSI B56.1 AND OSHA STANDARDSMENTS OF ANSI B56.1 AND OSHA STANDARDS

BIG LIFT LLCBIG LIFT LLC

WISCONSIN DELLS, WISCONSIN 53965WISCONSIN DELLS, WISCONSIN 53965

AUSTRALIAN PATENT NO. 537,987AUSTRALIAN PATENT NO. 537,987

U.S. PATENT NO. 4,444,284U.S. PATENT NO. 4,444,284

TRUCK

TYPE

MODEL NO. SERIAL NO.

VOLTAGE

BATTERY

TYPE CERTIFIED

MAX CAP LB/MAX CAP LB/ LOAD CTR IN/LOAD CTR IN/ LIFT HGT IN/

LOAD CTR IN/LOAD CTR IN/ LIFT HGT IN/ALT CAP LB/

BATTERY MIN WT LB/BATTERY MIN WT LB/TRUCK WT LESS BATTERY LB/TRUCK WT LESS BATTERY LB/

BATTERY MAX WT LB/BATTERY MAX WT LB/TRUCK WT WITH BATTERY LB/TRUCK WT WITH BATTERY LB/

KG MM MM

MM MMKG

KGKG

R6209

1-2 BG-S22-0812

Figure 1-2 S22 Lift Truck

R6841

ITEM COMPONENT

1 Control handle.

2 Key switch

3LEDindicator

4 Mast cover

5 Lift cylinder

6 Battery indicator

7 Battery charger connector

8 Emergency brake switch

9Forks

10 Battery

11 Chassis

12 Caster

13 Cover

14 Drive wheel

15 Cover

16 Hydraulic reservoir

17 Hydraulic pump

ITEM COMPONENT

BG-S22-0812 2-1

SECTION 2

OPERATION

2-1. GENERAL.

This section gives detailed operating instructions for

the S22 lift truck. The instructions are divided into the

various phases of operations, such as operating lift,

driving, and stopping. Routine precautions are

included for safe operation.

2-2. OPERATING PRECAUTIONS.

WARNING: Improper operation of the lift truck may

result in operator injury, or load and/or lift

truck damage. Observe the following

precautions when operating the S22 lift

truck.

The following safety precautions must be adhered to

at all times.

• Do not operate this truck unless you have been

trained and authorized to do so.

• All warnings and instructions must be read and

understood before using the equipment.

• Equipment must not be altered in any way.

• Equipment must be inspected by a qualified person

on a regular basis.

• Do not exceed the rated capacity. Overloading may

result in damage to the hydraulic system and struc-

tural components.

• Be certain that the lifting mechanism is operating

smoothly throughout its entire height, both empty

and loaded.

• Be sure that mast is vertical - do not operate on a

side slope.

• Be sure the truck has a firm and level footing.

• Avoid overhead wires and obstructions.

• Check for obstructions when raising or lowering the

lift carriage.

• Do not handle unstable or loosely stacked loads.

Use special care when handling long, high, or wide

loads to avoid tipping, loss of load, or striking

bystanders.

• Center and carry the load as far back as possible

toward the lift carriage back rest. The center-of-grav-

ity of the load must not exceed the load center listed

on the nameplate. See Figure 2-1 for load center

limitations.

• Pick up loads on both forks. Do not pick up on only

one fork.

• When traveling, always lower the load as far as pos-

sible.

Figure 2-1 Load Center

R3814

2-2 BG-S22-0812

• When stacking pallets in racks and it is necessary to

move the load in a raised position, use caution.

Operate truck smoothly.

• Observe applicable traffic regulations. Yield right of

way to pedestrians. Slow down and sound horn at

cross aisles and wherever vision is obstructed.

• Operate truck only from designated operation posi-

tion. Never place any part of your body between the

mast uprights. Do not carry passengers.

• Do not allow anyone to stand or pass under load or

lifting mechanism.

• When leaving truck, neutralize travel control. Fully

lower lifting mechanism and set brake. When leaving

truck unattended, turn off key switch, remove key

and disengage the emergency stop switch.

2-3. BEFORE OPERATION

Table 2-1 covers important inspection points on the

S22 lift truck which should be checked prior to opera-

tion. Depending on use, some trucks may require

additional checks.

Figure 2-2 shows a sample format for an Operator

Checklist, which can be modified as necessary to fit

your operation.

WARNING: Periodic maintenance of this truck by a

QUALIFIED TECHNICIAN is required.

CAUTION: A QUALIFIED SERVICE TECHNICIAN

should check the truck monthly for

proper lubrication, proper fluid levels,

brake maintenance, motor maintenance

and other areas specified in the SEC-

TION 3.

WARNING: If the truck is found to be unsafe and in

need of repair, or contributes to an

unsafe condition, report it immediately to

the designated authority. Do not operate

it until it has been restored to a safe

operating condition. Do not make any

unauthorized repairs or adjustments. All

service must be performed by a qualified

maintenance technician.

Table 2-1 Operator Checks

ITEM PROCEDURE

Transmission

and hydraulic

systems.

Check for signs of fluid leakage.

Forks Check for cracks and damage;

and, that they are properly

secured.

Chains, cables

and hoses

Check that they are in place,

secured correctly, functioning

properly and free of binding or

damage.

Guards and load

backrest

Check that safety guards are in

place, properly secured and not

damaged.

Safety signs Check that warning labels,

nameplate, etc., are in good

condition and legible.

Horn Check that horn sounds when

operated.

Steering Check for binding or looseness in

steering arm when steering.

Travel controls Check that speed controls on

control head operate in all

speed ranges in forward and

reverse and that belly button

switch functions.

Wheels Check drive wheel for cracks or

damage. Move truck to check

load for freedom of rotation.

Hydraulic

controls

Check operation of lift and lower

to their maximum positions.

Brakes Check that brakes actuate when

steering arm is raised to upright

position, and when lowered to

horizontal position.

Deadman/

Parking brake

Check that steering arm raises to

upright position when released

and brake applies.

Emergency Stop

Switch

Check that emergency stop

switch can be disengaged and

reengaged.

Battery charge Check the battery indicator.

High speed limit

switch

Allow for enough space to oper-

ate truck in high speed. Elevate

forks approximately two feet,

then test drive truck to check if

high speed is cut out.

ITEM PROCEDURE

BG-S22-0812 2-3

Figure 2-2 Sample of Operator Check List

R6479

Electric Truck

Daily Operator Check-Off List

Date

Big Joe Manufacturing Company

Operator

Truck No. Model No.

Dept.

Check

Tires

Load Wheels

Horn

Lift Lower Control

Need MaintenanceO.K. ( )

Shift

Hour Meter

Reading Drive Hoist

Attachment Operation

Forward & Reverse Controls

Steering

Brakes

Hydraulic Leaks, Cylinders,

Valves, Hoses, Etc.

2-4 BG-S22-0812

2-4. GENERAL CONTROL OPERATION.

The speed control (See Figure 2-3) located on each

side of the control head provides fingertip control for

driving the truck. Rotate the control in the direction you

want to travel. The farther you rotate the control from

the neutral position, the faster the truck will travel.

Figure 2-3 Forward/Reverse Control

The pushbutton switches (See Figure 2-4), located on

the front of the control head activate the lift-lower con-

trols and the horn.

Figure 2-4 Pushbutton Switches

2-5. DRIVING AND STOPPING PROCEDURES.

1. Disengage the emergency stop switch and turn

on the key switch. Grasp the grips of the steering

head so that the speed control can be comfortably

operated by either thumb.

2. Lower the steering arm to a comfortable position

above horizontal to disengage the brake and to

energize the electrical circuits. If the truck is not

moved, the electrical circuits will time out and will

deenergize. See Figure 2-5.

3. To move forward (with load in back), slowly press

the speed control forward. See Figure 2-3. Press

the forward speed control farther to increase

speed.

4. To slow down or stop, release the speed control

and lower or raise the steering arm to the horizon-

tal or vertical position. See Figure 2-5. In those

positions, the brake engages, slowing or stopping

the truck.

5. Procedures for movement in reverse are the

same as in the forward direction except slowly

press the speed control backward. See Figure 2-

2-5.1. Stopping

The brake pattern of the truck depends on the ground

conditions. The driver must take this into account

when operating the truck.

The driver must be looking ahead when traveling. If

there is no hazard, brake moderately to avoid moving

the load.

There are four different ways to stop the truck:

1. Plugging: This electrical braking function con-

sists of rotating the speed control lever in the

opposite direction of travel and then releasing it

when the truck stops. Plugging is a convenient

way to stop the truck during normal operation. If

the control is not released, the truck will acceler-

ate in the opposite direction.

2. Steering arm (See Figure 2-5): The brake is fully

applied by lowering or raising the steering arm.

(See Figure 2-5) All traction control power is shut

off when the brake is engaged. When the steering

arm is in the upright position, the brake acts as a

parking brake. Deadman braking occurs when the

handle is released and spring action raises steer-

ing arm to the upright position.

3. Emergency braking: Press the emergency brake

switch, all electrical functions are cut out and the

truck automatically brakes.

4. Regenerative braking: If the speed control lever

is released, the truck automatically brakes regen-

eratively. When the speed is below.5 MPH, the

brake applies.

R6617

R6618

Tabla de contenidos

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