Vestil EH-76-45 handleiding
Handleiding
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TABLE OF CONTENTS 5/12/2022 EH MANUAL
TABLE OF CONTENTS Copyright 2022 Vestil Manufacturing Page 16 of 19
Troubleshooting
The following information is provided to diagnose and correct issues with EH-series dock levelers.
Issue
Cause
Solution
Motor does not run and
deck does not rise
1.
Emergency stop button activated
(pressed)
2. Transformer fuse blown
or tripped
circuit breaker
3. No supply voltage
4. Bad control transformer
5. Malfunctioning motor relay coil
6. Malfunctioning RAISE push button
7. Thermal-overload switch tripped
1.
Pull up emergency stop button.
2.
Replace fuse or reset circuit
breaker.
3.
Test voltage with meter, Check
fuses, breakers, and overloads.
4. Check for 24VAC; replace if bad.
5. Test with meter; replace if bad.
6. Test with meter; replace if bad.
7. Wait for motor to cool.
Motor runs, but deck does
not rise and don’t hear
motor running
1.
Motor rotation is wrong
2.
Pumps failing to pressurize hydraulic
system
3. Load on the deck (leveler will only lift
its own weight)
1.
Confirm that motor turns clockwise
opposite the shaft end.
2. Contact the factory.
3. Unload the deck.
Motor hums or pump
squeals but deck does not
rise or rises very slowly
1. Excessive voltage drop to motor
because power cord wire size too small,
wire length too long, or incoming
voltage too low.
2.
Motor running slowly, is hot, or lost
one phase (3-phase motors)
3.
Pressure relief valve opening at full
system pressure.
4. Pilot-to-
close check valve failing to
close
5. Load applied to deck
1. Check power installation. Check
incoming voltage
while motor
running.
2. Check voltage on all legs; check
fuses; repair as necessary.
3.
Check for frame damage or
binding at the deck hinge, etc.
Check for platform overload
condition.
4. Remove valve and inspect.
5. Remove load from deck.
Deck does not
automatically return to
stored position when truck
leaves dock
1.
Auto/Manual switch in manual
position
2. Defective limit switch
(deck fails to
engage the below dock limit switch, or
switch malfunctioning
3. Defective timer
, or timer period set
too short
4.
Bad (AUTO/Manual) selector switch
contact block
1.
Move switch to “auto” position
2. Change auto/manual switch to
Manual mode and press RESET
button.
3. Check the timer setting. Test for
timer output and replace if bad.
4. Test with meter; replace if bad.
Deck does not lower
1. Velocity fuse, item 10, in deck
cylinder is locked.
2. Pressure-
compensated flow control
valve stuck.
1. Press and release RAISE button to
unlock fuse. If problem persists,
check for air in oil.
2. Replace valve.
Lip retracts too quickly
causing rough action
Lip relief valve, item #2B, pressure
setting too low
Turn adjustment on valve
clockwise (quarter turn or less)
Lip does not retract
Lip relief valve, item #2B, pressure
setting too high
Turn adjustment on valve
counterclockwise (quarter turn or less)
Lip retracts before
contacting truck bed
1. Lip relief valve, item #2B, pressure
setting too low
2. Faulty lip cylinder, item #12,
3. Faulty power unit
1. Turn adjustment on valve
clockwise (quarter turn or less)
2. Repair or replace
3. Repair or replace
Lip does not extend when
deck reaches top position
1. Defective lip cylinder
2. Faulty power unit
1. Repair or replace
2. Repair or replace
Bekijk gratis de handleiding van Vestil EH-76-45, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Vestil |
| Model | EH-76-45 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 4662 MB |
