Troubleshooting Videos

Elevator moves up because of a solenoid A problem

Turn adjustment #5 all the way in

Solenoid A: not energized or voltage too low

Solenoid A: tube not fully tightened

Tighten solenoid A sufficiently

Solenoid A: dirt between needle AN and seat AS, or damage

Clean or replace the needle and seat

Adjustment #2 not opened enough

Open adjustment #2

Adjustment #1 opened too far

(Pilot pressure not sufficient)

Open adjustment #1 while the pump is running

Pressure relief valve S set too low

Set the pressure relief valve higher (inward)

Adjustment #8 turned in too far

(Car touches the buffer)

Turn adjustment #8 out

Bypass flow guide U too large

Insert a smaller bypass flow guide

(>See the flow guide chart)

If, when adjustment #1 is turned with the pump running, the pressure does not rise above 5 bar even after a smaller bypass valve has been inserted, the pump may be at fault

If the elevator travels upward at full speed, it is a solenoid B problem

Turn adjustment #3 all the way in.

Solenoid B not energized or voltage too low

Solenoid B tube not fully tightened

Solenoid B: dirt between needle AN and seat AS, or damage

Clean or replace the needle and seat

Adjustment #1 turned in too far

Turn adjustment #1 outward

Adjustment #2 turned out too far

Turn adjustment #2 inward

Bypass flow guide U too small

(Slot too narrow)

Replace the flow guide with one with a wider slot

Oil leaking from O-ring UO of bypass valve U

Replace the O-ring

Solenoid B does not de-energize

Lift the coil and check the magnetic pull

The slow-down switch may be set too high

Adjustment #3 turned in too far

Turn adjustment #3 outward

Turn adjustment #2 inward

Oil leaking from O-ring UO of bypass valve U

Replace the O-ring

Adjustment #4 loosened too far

Turn adjustment #4 inward until the leveling speed is about 0.05 m/sec

Solenoid A de-energizes too late

Lift the coil and check the pull

Check the switch position in the shaft

Adjustment #5 turned in too far

Turn adjustment #5 outward

Adjustment #1 turned in too far

Turn adjustment #1 outward

Upward leveling speed too fast

Bypass flow guide U too small

(Slot too narrow)

Replace with a flow guide with a wider slot

Solenoids A and B swapped

Swap the positions of solenoids A and B

Upward leveling speed too slow

Adjustment #4 does not work

Replace the O-ring

Adjusting valve (relief valve) set too low

Set the adjusting valve (relief valve) higher

Solenoid D not energized or voltage too low

Lift the coil and check the magnetic pull

Adjustment #6 tightened in too far

Turn adjustment #6 outward

Adjustment #8 turned out too far

Carefully turn adjustment #8 inward

*Caution: this may cause danger during operation

Oil leaking from O-ring UO of down valve X

Replace the O-ring

Solenoid C not energized or voltage too low

Lift the coil and check the magnetic pull

Adjustment #7 tightened in too far

Turn adjustment #7 outward

Down valve flow guide X too small

Check the size

Solenoids C and D swapped in position

Lift the coil and check the magnetic pull

Solenoid D not energized or voltage too low

Adjustment #9 turned in too far

Turn adjustment #9 inward until the leveling speed is about 0.05 m/sec

Spring 9F of adjustment #9 broken

Replace adjustment #9 completely

Adjustment #8 turned in too far

The filter of adjustment #8 is clogged or adjustment #8 is damaged

Turn adjustment #8 outward by about 1/2 (about half a turn)

Clean the filter

Replace adjustment #8

Adjustment #9 turned out too far

Turn adjustment #9 inward until the leveling speed is about 0.05 m/sec

Solenoid valve C: dirt between needle DN and seat DS, or damage

Clean, or replace the needle and seat

Oil leaking from inner O-ring FO of flange 7F

Replace the O-ring

Solenoid D tube not fully tightened

Fully tighten the solenoid D tube

Adjustment #8 turned in too far

Turn adjustment #8 outward by about 1/2 (about half a turn)

Solenoid C contaminated and not working properly

Clean or replace it

Adjustment #9 contaminated and not working properly

Clean or replace it

Solenoid valve D: dirt between needle DN and seat DS, or damage

Clean, or replace the needle and seat.

Oil leaking from O-ring XO of down valve X

Replace the O-ring

Oil leaking from O-ring VO of check valve V

Replace the check valve

Oil leaking from O-ring WO of check valve V

Replace the O-ring

Oil leaking from inner O-ring FO of flange 4F

Replace the O-ring

Oil leaking from O-ring HO of manual lowering H

Replace the manual lowering

HX/MX: adjustment 8M turned in too far

Turn adjustment 8M outward