Matrix 0850 - Page 211

0850/0850-T1 User Manual
Matrix Machine Tool (Coventry) Limited 211 / 231
Edition: 08/2013
Sudden Stop No Alarm Messages
Main power is input but cooling unit not running.
Status
PV °C, SV °C will not display on the control panel.
Possible Cause
The main power may not be properly connected.
Main power source circuit breaker is in the OFF position.
Control circuit board failure.
Fuse on control circuit has blown.
Remote control function is not properly connected.
Timer (optional component) failure.
Inspection
Check if mains power source is supplying the power correctly. (If circuit breaker is in the ON
position).
Check if connection wire is connected properly.
Check fuse on the control circuit.
Check the remote control connection.
Check if the timer is set properly.
Has controller board failed?
Solution
Reconnect the main power source.
Replace the blown fuse.
Replace controller board.
Reset the timer or replace.
Status
PV °C, SV °C displays temperature..
Possible Cause
Remote control function is not properly connected.
Power voltage input is incorrect.
Electromagnetic switch faults.
Motor failure.
Inspection
Check the remote control connection.
Check if the power voltage to the motor is correct.
Check if the magnetic switch is in order.
Check if the motor is still working correctly.
Solution
Reconnect the remote control function.
The power voltage to the motor should be the same as the rated power voltage for the
cooler unit.
Replace faulty parts.
Cooler unit operating but there’s an abnormal condition with the cooling process.
Status
No cooling is processed.
Possible Cause
The compressor will stop operating when the temperature reaches the set value of SV °C.
Electromagnetic switch failure.
Poor heat dissipation.
Inspection
Has oil temperature reached the required cooling range?
Is the electromagnetic switch in order?
Is the cooler unit’s internal temperature too high.
Solution
It is normal for the compressor to stop operating when the oil temperature reaches the set
value.
Replace the electromagnetic switch.
Improve the working environment to lower the ambient temperature.
Improve ventilation.
Status
Cooling continues when set value has been reached.
Possible Cause
The process load is above the cooler unit’s capacity.
Poor heat dissipation.
Leakage of refrigerant.
Thermostat failure.
Inspection
Is the cooler unit’s capacity suitable for the process load?
Is cooler unit’s internal temperature too high?