Maxon GPC 22 X1 User manual

Cantilever GPC X1
Operator`s Manual
Liftgate
Series
GPC 22 X1
Lift CORP.
11921 Slauson Avenue.
Santa Fe Springs, CA 90670
(800) 227 - 4116 © Sörensen Hydraulik GmbH
Version 2011
Document no.: S 20 909 946

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 1Version: 2011
General
You have chosen a lift gate of the highest quality. The lift gate is a low maintenance unit. It is
equipped with maintenance-free, grease-free bearings and does not require greasing
throughout its entire lifetime.
The lift gate may only be used for the raising and lowering of loads, which must be loaded in
accordance with the load diagram.
The lift may be operated, maintained and serviced only by persons who have received
appropriate training and who have been specifically instructed of the dangers associated with
its operation.
The accident prevention regulations, must be observed. If they are not, the manufacturer
cannot accept any liability for resultant damage or injury.
These operating instructions are valid for following lift gates :
Model Capacity kg Capacity pounds
GPC 22 X1 1000 kg 2200 pounds
Daily verifications :
•Check for correct and normal operation
•Legibility of all operating and information labels
•Check for weld cracks and make sure all bolts and nuts are tight
•Check for leaks on hoses, valves and hydraulic cylinders
•If platform has warning lights please check for function
The driver should report any incorrect operation or obvious damage
to his maintenance department. All damages are to be mended
immediately. The lift gate owner is responsible for the repairs of
detected damages.
The operating instructions are to be carried in the vehicle at all
times.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 2 Version: 2011
Yearly check
The lift gate must be checked for damages at least once a year by trained personnel. The
results of this verification must be written down in the maintenance book.
Battery capacity
Lift capacity Up to 2200 lbs
12V : 1 x 12V 88 Ah
24V : 2 x 12V 66 Ah
Battery size Group 31
For use in short-haul traffic the next step up should always be selected.
Heavy-duty alternators are strongly recommended.
The operator is resp onsible for the battery capacity and the c harge status of the
battery.
The electric motor
You can avoid damages to the motor or the power relais if you ensure that you have the right
voltage at all times. If the motor has trouble with a load that is normally lifted without a
problem, stop the lifting operation immediately and charge the batteries.
If, in your opinion, the batteries are empty too fast, have the batteries and the power cables
checked by a specialist.It could be possible that the cables, the mass connection or the
batteries have to be repaired or changed.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 3Version: 2011
Switching on the lift gate
Switch the lift gate on with the push button located in the cabin. When the red lamp lits, the
lift is ready for operation
Description of the controls
Hand control box
All functions must be operated with two hands by switching the toggle switches located at the
side of the hand control box
Lift
Lower
Open / tilt down
Close / tilt up
Hand control box 2 Buttons
Lift Lower

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 4 Version: 2011
Hand control box 3 Buttons
Open / tilt down Close / tilt up
Foot Controls (Optional version)
The foot controls are connected so that they only work when pushed in a specific order.
To lift and tilt up
Step 1 - activate foot control button for lowering
Step 2 - activate foot control button for lifting
To lower and tilt down
Step 1 - activate foot control button for lifting
Step 2 - activate foot control button for lowering

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 5Version: 2011
General Information
Standing on the platform when it is moving
As it is only allowed for the operator to stand on the platform, he must ensure that no other
person (especially children) are standing inside the danger zone.
Hazard information for unsecured loads
Under certain circumstances, there is a possibility that the front axle of the vehicle lifts while
unloading. On this inclination, unsecure loads may start to slip and create a danger for the
operator.
You can purchase a warning sticker
CAUTION ! Secure the load against
moving or use mechanical supports

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 6 Version: 2011
Description of the Safety Installations
Hose Rupture Valves
If a hose, a pipe or a screw connection should burst, the lift gate lowers or inclines in a
controlled manner at the permitted speed, as long as a function is connected via one of the
control units (hand held remote controls, foot controls or hand control box). If such control
unit is not activated, or ceases to be activated, the lift gate stops automatically.
Safety Valve
The lift gate is protected by the factory-set safety valve from raising loads which are heavier
than the specified carrying capacity. This valve may only be adjusted by an expert using a
test weight and a manometer.
Fuses
Defective fuses may only be replaced by fuses which correspond to the values specified in
the wiring diagram and on the distributor plate. Larger fuses may not be blown in the event of
malfunctions, which could lead to cables catching fire.
Roll-off Safety Devices
If roller containers are being used, the lift gate should be equipped with roll-off safety
devices. Their operation is impaired by dirt; the operator should keep the roll-off safety
devices clean at all times.
Warning Flags
The flags can be seen until the platform is on the ground. Both safety installations should be
kept clean and in perfect condition at all times.
(Optional version)
Warning Lights
The lights flash as soon as the platform has opened a few degrees.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 7Version: 2011
Standing on the platform when it is moving
When loading the platform, please ensure that you leave enough space for the operator to
securely operate the lift gate.
Securing of Loads
Rolling and sliding loads must be secured on the platform. Lift gates come optionally
equipped with cart stops, securing rolling loads with the maximum efficiency (wheels with
maximum diameter 4” )
Caster diameter max. 4“

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 8 Version: 2011
Safety guide for the operation of the lift gate
Secure the load against toppling over and sliding

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 9Version: 2011
Permissible Loading
Apart from being included in these operating instructions, the load diagram is also shown on
the lift gate identification plate. All loads must be placed as close to the edge of the Platform
nearest to the vehicle floor as possible, with the heaviest part of the load toward the vehicle.
No part of any load should be allowed to extend over the edges of the Platform. Do not place
unstable loads on the Platform. Do not allow any load to exceed the rated capacity for the
unit. If standing on the Platform, do not allow your feet to protrude beyond the edges. The
greater the distance of the load from the vehicle floor, the lower the loading capacity. The
maximum loading capacity specified in the load diagram must not be exceeded. The platform
may not be used with any load greater than the maximum permitted carrying capacity.
0
500
1000
1500
2000
2500
78 3/8 70 7/8 63 55 1/8 47 1/4 39 3/4 31 1/2 23 5/8 15 3/4 7 7/8
LBS
inch
GPC 22 X1
LBS
The maximum weight indicated in the loading diagram must not be
exceeded. When the platform sits on the ground, it can be overrolled
onl
y
with the maximum load indicated.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 10 Version: 2011
Platform, bridge and ramp
Never sit the ramp on the platform, always use the platform as a ramp !

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 11 Version: 2011
Load and unload at a ramp
Loading and unloading at a ramp is only possible if the platform tip sits firmly on the dock.
Please note that the vehicle might lift while unloading, and that the platform will lift from the
ground. To prevent accidents, the platform tilt must always be compensated, so that the tip
sits firmly on the dock at all times.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 12 Version: 2011
Transferring Loads from Vehicle to Vehicle
When transferring loads, it should be ensured that only one of the two platforms is being
used as a dock. The platform being used as a dock must lie firmly on the vehicle opposite,
or it may lead to the lift gate becoming overloaded.
Wrong
Right

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 13 Version: 2011
Loading with a Fork-Lift Truck
Driving over the platform with a fork-lift truck is not allowed if the weight of the fork-lift plus
the weight of the load to be transported is greater than the carrying capacity of the lift gate.
The platform must lie firmly on the floor.
When performing any kind of loading or unloading
operation, the vehicle must be secured against
unexpected movement. Use handbrake or wedges

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 14 Version: 2011
Securing of Load
The use of the platform or any other parts of the lift gate as a means of securing a load is not
permitted.
Only close the platform after the lift arms have moved firmly against the bodywork. Under no
circumstances close the platform on the floor or in an intermediate position. This will destroy
cylinders, cables and mechanical parts.

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 15 Version: 2011
Lift gate as lifting device
Do not hand any loads on the platform
Lift gate as pushing device
Do not use the lift gate as a pushing device

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 16 Version: 2011
Care, Maintenance, Testing and Repairs
Before the start of maintenance work, the lift gate must be secured against unforeseen
movement.
The lift gate is very undemanding. It should, however, be included in the regular servicing
work on the vehicle.
Check that all screw connections are tight. Check that cables and hoses are able to move
freely. Correct shearing and chafing points on cables and hoses. Immediately replace
damaged hydraulic hoses with ones of the same quality. Note the replacement in the
inspection records.
During cleaning it should be ensured that no moisture penetrates the power pack or the
control box. The bearing areas should not be cleaned with high pressure or steam jets, as
this may allow dirt and moisture to penetrate the bearing.
Check the hydraulic unit for leaks. With the lift gate lowered, check the oil level with the
platform lowered to the ground in the unit's tank (dipstick on the oil filler neck cover).
The maximum oil level has been reached when the dipstick dips approx. one centimetre into
the oil.
Carry out an annual oil change and clean the suction filter. Carry out the oil change before
any period of frost, in order to prevent the hydraulic unit from freezing up.
Hydraulic oil – recommendations
ISO 32 HYDRAULIC OIL ISO 15 HYDRAULIC OIL ISO-10 OR MIL-H-5606
Hydraulic Oil
AMSOIL AWH-05 AMSOIL AWF-05 AMSOIL N/A
CHEVRON HIPERSYN 32 CHEVRON FLUID A, AW-MV-
15 CHEVRON FLUID A, FLUID G
KENDALL GOLDEN MV KENDALL GLACIAL BLU KENDALL GLACIAL BLU
SHELL TELLUS T-32 SHELL TELLUS T-15 SHELL AEROSHELL FLUID-
41
EXXON UNIVIS N-32 EXXON UNIVIS HVI-1
EXXON UNIVIS HVI-13
MOBIL DTE-13M, DTE-24,
HYDRAULIC OIL-13 MOBIL DTE-11M MOBIL AERO HFA
With normal temperatures from 15 to 85 degree Fahrenheit it is recommended to use ISO 15
Hydraulic oil. For general colder climate use ISO 10, and warmer climate use ISO 32.
Oil fill up or change
3
1. lower
2. tilt down
3. oil fill up
2
1

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 17 Version: 2011
Repairs to Load-Bearing Components
Repairs to load-bearing components are only to be carried out in an authorized repair shop
and are to be tested by a competent person and entered in the inspection records.
For any malfunctioning, first check voltage level
Troubleshooting The 2 diodes in the front of the control box lits when the GPC
are switched on. If not - check the fuse in the battery cable.
Problem possible cause
1. Motor of pump box
does not work Battery cable or ground cable not connected or defective or
empty battery
Main fuse defective
Fuse in power pack defective
The power relay is defective and doesn't switch
Motor defective
2. Motor does not work
on one function only Toggleswitch on hand control box defective
Cable from hand control box to pump box defective
Wiring inside pump box defective
Switch relay defective (Starter Solenoid)
3. Platform tilts down
alone without operating
that function.
Solenoid valves on tilting cylinder defective
Cylinder defective
4. Platform does not tilt
down when touching the
ground.
Cable to pressure switch defective
Pressure switch defective
5. Lift gate does not lift Pump box does not work
Lack of oil in the tank
Voltage insufficient (low Battery)
6. Lift gate does not lift
rated capacity Load is placed in excess of permitted loading distance
Weight of load too high
Overload security valve not set properly

Lift CORP.
Operator`s handbook Series GPC 22 X1
Document no.: S 20 909 946 18 Version: 2011
Pump defective
Voltage insufficient (low Battery)
7. Lift gate does not tilt up
from ground when unloaded Toggle switch does not operate
Mercury switch S2 defective or not set properly
8. Lift gate does not tilt up
from ground when loaded. Load is placed in excess of permitted loading distance
Weight of load too high
Overload security valve not set properly
9. Lift gate tilts from ground
above horizontal Mercury switch S2 defective or not set properly
Where the electrical motor runs continuously (the lift gate will not switch off)
disconnect the positive cable from the battery by disconnecting the main switch or
throwing the main fuse.
In an emergency call our Customer Service Department or the nearest authorized repair
shop. On request, we shall be pleased to send you an up-to-date list of Customer Service
repair shops authorised by us.