Vestil JMD-1000-48 handleiding
Handleiding
Je bekijkt pagina 10 van 12
Table of Contents Rev. 1/31/2023 JMD-1000, MANUAL
Table of Contents Copyright 2023 Vestil Manufacturing Co. Page 10 of 12
TROUBLESHOOTING
WARNING
Risk of serious personal injury or death.
DO NOT attempt to resolve any issue discussed below UNTIL the chute is fully lowered and the power
supply is disconnected.
Contact TECHNICAL SERVICE to discuss any issue that is not addressed in this guide or if you need
assistance implementing a solution described in this guide.
Issue
Possible causes
Solutions
1. Power unit doesn’t run when
UP button is pressed.
1a.Transformer fuse is blown.
b. No supply voltage.
c. Upper-travel limit switch is
closed or bad.
d. Faulty connection in control
circuit.
e. Bad control transformer.
f. Open motor relay coil.
g. (DC units) Low battery
voltage.
1a. Test with meter; replace if bad.
b. Test with meter. Check fuses,
breakers, and overloads to
determine the cause.
c. Inspect and test switch.
Replace if bad.
d. Test all parts of circuit with meter.
e. Check for 24 VAC; replace if
bad.
f. Test with meter; replace if bad.
g. Test with meter. Charge battery
if low (is motor relay LED on?)
2. Motor runs properly, but chute
doesn’t move when UP and
DOWN buttons pressed. Motor
and pump are quiet.
2a. Incorrect motor rotation.
b. Pump failure.
c. Low hydraulic fluid level.
2a. Verify motor shaft rotates
counterclockwise.
b. Consult factory for replacement.
c. Ensure oil reservoir is filled.
3. Motor hums, chatters, or
buzzes, or some type of squeal
can be heard, but the chute
either does not move or only
moves very slowly.
3a. See 2b above.
b. Excess voltage drop to motor
due to power wire size too
small, wire run too long, or
incoming voltage too low.
c. Pressure relief opening at full
pressure.
d. Contamination holding open
lowering valve or check valve.
3a. Same as 2b.
b. Check power installation for
adequacy. Check incoming
voltage while motor is running.
Correct problem(s).
c. Check for structural damage or
binding that prevents chute from
elevating. Check for chute
overload condition.
d. Remove and inspect. Clean the
valve with mineral spirits.
4. Chute elevates then slowly
lowers on its own, i.e. without
pressing the DOWN button.
4. See 3d above.
4. Same as 3d.
5. Chute lowers too slowly.
5a. Flow control spool is stuck.
b. Pinched hose.
c. Velocity fuse locking (chute
only slowly creeps down).
5a. Remove plug from FC port;
push down on the center of the
flow spool to ensure it moves freely.
b. Check pressure, supply, and
return hoses for kinks.
c. Bleed air per procedure
described on p. 20 of the MPU-DC
GEN2 manual.
6. Chute lowers too quickly.
6a. See 3d.
b. Flow control spool is stuck.
6a. Same as 3d.
b. Same as 5a.
7. Spongy or jerky chute motion.
7. Air in the hydraulic cylinders.
7. Bleed air per procedure
described on p. 20 of the MPU-DC
GEN2 manual.
Bekijk gratis de handleiding van Vestil JMD-1000-48, 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 | JMD-1000-48 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3220 MB |
