Installation, Operation and Parts Manual
EE-MR35
18
TROUBLE SHOOTING
ATTENTION: If the trouble could not be fixed by yourself, please do not hesitate to contact us for help .The troubles will be judged and solved
much faster if more details or pictures of the trouble could be provided.
TROUBLES
CAUSES
SOLUTIONS
Motor does not run and
will not raise.
Loose wire connection
Check and make a good connection.
Burnt motor.
Replace it.
Damaged limit switch or its wire connection is loose.
Adjust or replace the limit switch.
Motor runs but will not
raise.
The motor run reversely.
Check the wire connection.
Overflow valve is not well screwed up or jammed.
Clean or make adjustment
Damaged gear pump.
Replace it.
Too low oil level.
Add oil.
The hose connection is loose.
Tighten it.
The cushion valve is not well screwed up or jammed.
Clean or make adjustment
Platforms go down
slowly after being
raised.
The oil hose leaks.
Check or replace it.
Untightened oil cylinder.
Replace the seal.
The single way valve leaks.
Clean or replace it.
Solenoid valve fails to work well.
Clean or replace it.
Unloading valve leaks.
Check and adjust the tightness.
Raising too slow.
Jammed oil filter
Clean or replace it.
Too low oil level.
Add oil.
The overflow valve is not adjusted to the right position.
Make adjustment.
Too hot hydraulic oil ( above 45°
）
.
Change the oil.
Abraded seal of the cylinder
Replace the seal.
Lowering too slow.
Jammed throttle valve
Clean or replace it.
Dirty hydraulic oil
Clean or replace.
Jammed anti-surge valve
Change the oil.
Jammed oil hose
Clean it.
