Interlift ILR Series Operating instructions

1
Interlift Inc.
15939 Piuma Avenue
Cerritos, CA 90703
Phone: [phone]
Fax: [phone]
Email: [email protected]
ILR - Series
Troubleshooting: ILR – Single Cylinder Folding Unit
Table of content: Page
1) Gate overview ………………………………………....2
2) Gate does not lower down…………………………….3
3) Gate is not lifting up……...…………………………….4
4) Electrical schematic……………………………………5
5) Hydraulic schematic…………………………………...6
Tools needed:
1.) Voltmeter
2.) Test light
3.) 8” jumper cable (16ga. or smaller)
4.) Screw driver flat head
5.) 13mm (1/2”) wrench
*****MAKE SURE YOUR BATTERIES ARE FULLY CHARGED
AND IN GOOD CONDITION*****
Always use CAUTION and
allow SAFE distance from moving parts
Practice SAFETY, using common sense
and good judgment

2
Stored position
Gate overview
Unfolded gate
Folding process
ILR
Series

3
Interlift Inc.
Phone: [phone]
Fax: [phone]
Email: [email protected]
ILR
Series
1) GATE DOES NOT LOWER DOWN
1.1) Check Battery Power
a) Check if Cab Cut of switch is pulled out – “ON” position
b) Check resettable Circuit Breaker on top of batteries ÆPush Reset Tab back in, if popped out
b) Check fuse at pump & motor (qty 1) in box for hydraulic power unit
c) Start truck and run engine in fast idle for charging the battery
Æif lift gate starts working, recharge batteriesÆtest batteries and truck/trailer charging system
d) Check for a solid ground connection from the motor post to box of hydraulic power unit
1.2) Check controls
a) Check the valve visually for mechanical damage – bent or damaged ??
b) Open up Lid at hydraulic power unit and unplug red cable #2 with the inline fuse.
c) Unplug cable #6 at 2wire release valve harness to toggle switch
d) Connect female end #2 and male end #6 to energize release valve.
a) Gate is lowering down – check switch and grey 3 wire harness to switch for damaged spots
b) Gate is not lowering down
a) Check release valve wiring for damaged spots
b) Unscrew plug of valve – stick voltmeter or test light into connectors and hit the down
function
a) See light or read voltage – cable is ok
b) See no light or 0 V – damaged wire
c) Remove plastic cap of release valve – keep coil in place - and hold a screwdriver
close to steel valve stem while hitting the down function – screwdriver did not get
magnetically pulled towards valve, bad coil.

4
Interlift Inc.
Phone: [phone]
Fax: [phone]
Email: [email protected]
ILR
Series
1) GATE DOES NOT LIFT UP
1.1) Check Battery Power
a) Check if Cab Cut of switch is pulled out – “ON” position
b) Check resettable Circuit Breaker on top of batteries ÆPush Reset Tab back in, if popped out
b) Check fuse at pump & motor (qty 1) in box for hydraulic power unit
c) Start truck and run engine in fast idle for charging the battery
Æif lift gate starts working, recharge batteriesÆtest batteries and truck/trailer charging system
d) Check for a solid ground connection from the motor post to box of hydraulic power unit
1.2) Check controls
a) Check the valve visually for mechanical damage – bent or damaged ??
b) Open up Lid at hydraulic power unit and unplug cable #2 at black 3 wire harness.
c) Jump female end #2 to small positive connector (switch cable #5 attached) on motor solenoid.
WARNING – Do not stay between platform and truck body – gate will raise up
d) Gate is lifting up – check switch and grey 3 wire harness to switch for damaged spots
a) Gate is not raising up
a) Check motor solenoid for proper function – hear clicking??
a) No clicking – motor solenoid or thermo switch at motor is bad
b) Hear clicking – check for voltage on both big positive studs to ground
a) Voltage – solenoid is ok
b) No voltage – solenoid is not connecting internally – bad solenoid
b) Motor solenoid is ok
a) Check for power on large positive motor stud
a) Have power – bad motor, bad brushes or ground
b) No power at motor stud – Check connection to solenoid

5
Electrical schematic
ILR
Series

6
Functions:
Lift: M
Lower:S1
Pressure Relief
2850 PSI
200 bar
Restrictor Valve R5
Flow Divider
Functions:
S1 = Release Valve for lowering function
R1 = Flow Restrictor located inside hose adaptor on lift cylinder
R5 = Restrictor Valve located in power pack
Flow Divider is activated, when fluid is going back into the power pack
If Flow Divider is loose or hanging up the fluid is circulated back in to tank
Access for
pressure gauge
Hydraulic schematic
ILR
Series