Shini STM-W, Инструкция по эксплуатации

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Trouble-shooting
5. Trouble-Shooting
1
2
3
4
5
Failures Possible reasons Solutions
Main power indicator
does not become bright
after main switch is
turned on.
Both power and phase
reverse indicator are
bright after the main
switch is turned on.
The buzzer sounds to
raise alarm.
Motor overload relaly is
bright. The buzzer sounds
and system stops working.
Overheat indicator is
bright. The buzzer sounds
and system stops working.
Low level indicator is
bright. The buzzer sounds
and system stops working.
Did not connect through power
supply.
Main switch broken.
Power supply wires problems.
Control circuit fuse melt.
Transformer broken. Connect through power supply.
Replace main switch.
Check electrical wires.
Fix the fuse.
Replace the transformer.
Power supply low voltage.
Phase shortage.
Phase reversal.
PCB problems. Check power supply.
Check power supply.
Exchange two of the wires of power supply.
Replace the PCB.
Abnormal fluctuations of power
supply.
Pump blocked.
Pump motor problems.
Overload relay (F1) setting value
error. Check power supply.
Check the pump.
Check pump motor.
Set the setting current of overload relay to
equal to 1.1 times of motor rated current.
Please refer to page 10-15 for detailed
description of overload relaly.
Reset overload relay:
wait for one minute, then press the blue button
to reset.
EGO temperature setting mistakes
EGO poor temperature detecting.
Heater contactor K1 and K2
problems. Correctly set EGO temperature.
Replace the contactor.
Low pressure of of water supply.
Pressure switch problems. Increase the pressure of water supply.
Replace pressure switch.
6
Main switch indicator won't
become bright after turning
on main switch. Pump can
not start when turning on
pump switch. PCB output relay problems.
Pump switch problems.
Time relay (K5) problems.
Electrical circuit problems. Check or replace the PCB.
Replace the switch.
Replace time relay. (K5)
Check electrical circuit.
7 No display of temperature
controller after turning on
pump and heater switch. Heater switch problems.
Temperature controller problems.
Electrical circuit problems. Replace the switch.
Replace temperature controller.
Check electrical circuit.
8
Differences between
setting temperature and
actual temperature is
too big.
Too short time after machine
startup.
Temperature parameter setting
error.
Cooling water valve problems.
Wait for a while.
Check temperature parameters.
Reset incorrect parameters with reference
to chapter 6.5.
Replace solenoid valve.
9 Temperature can't rise
up. Heater contactor problems.
Heater problems.
Thermocouple problems.
Temperature controller operation
mode set to STOP.
Temperature output problems. Replace the contactor.
Replace pipe heater.
Replace thermocouple.
Set temperature controller to working mode.
Replace or repair temperature parameters.
10 Circuit breaker tripping
off at turning on main
switch. Short circuit of main circuit.
Transformer short circuit or
connected with earth wire.
Problems of circuit breaker. Check electrical wire.
Replace circuit breaker.
11 Circuit breaker tripping off
at turning on pump switch. Pump motor coil short circuit.
Problems of circuit breaker. Check pump motor.
Replace circuit breaker.
12
Circuit breaker tripping
off at turning on pipe
heater switch. Pipe heater short circuit or contact
with heating tank.
Problems of circuit breaker.
Check electrical circuit.
Replace circuit breaker.