Challenger Lifts SX14, Инструкция по установке, эксплуатации и обслуживанию, Страница: 29 / 46

29
T
ROUBLESHOOTING
O
PERATIONS
WHAT HAPPENS WHERE CHECK
The lift does not rise and
the motor does not start
a. FUSES
b. THERMAL RELAY
c. TRANSFORMER
d. MOTOR
e. MAIN CONTACTOR
f. PHOTOCELL
a.1. line fuse blown.
a.2. 24-volt fuse blown.
b.1. thermal relay tripped, reset.
c.1. transformer failure, does not emit 24 volt.
d.1. motor failure.
e.1. contactor C1 failure
f.1. photocell fault.
f.2. photocells out of reading range
The lift does not rise and
the motor starts.
a. HYDRAULIC PUMP
b. LOWERING VALVE
c. LIMIT VALVE
d. MOTOR
a.1. o-ring seal broken.
a.2. key broken.
a.3. pickup tube broken.
a.4. clamping screws loose.
a.5. oil leakage.
a.6. check the pressure value
b.1. lowering valve stuck open.
c.1.limit valve broken.
d.1. Check that the motor turns in the direction shown by the arrow.
The lift does not lower
and the pressure is
normal.
a. PHOTOCELLS
b. TRANSFORMER
c. PARACHUTE
VALVE
d. ELECTRIC VALVE
e. MECHANICAL SAFETY
DEVICES
f. LOCK RELEASE VALVE
a.1. photocell fault.
a.2. photocells out of reading range
b.1. transformer failure, does not emit 24 volt.
c.1. check the parachute valves on the bottom of the dual effect cylinders.
d.1. lowering valve blocked.
d.2. lowering valve coil failure.
e.1. mechanical safety devices mechanically blocked.
f.1. air blocked (does not open the mechanical safety devices).
f.2. valve requires power.