STM
67 8 9
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Application and Operation
No. Name Functions Remarks
1
Power supply
indicator
2
Phase reversal
alarm
3
Motor overload
alarm
Check that if motor
shaft is blocked or the
bearing is broken or
setting current of
overload relay is too
low. After the problems
solved, wait for one minute and then
press the blue RESET button to reset
the overload relay and clear the alarm
4
Overheat alarm
When oil temperature is higher than
EGO (temperature sensor) setting
value, this indicator becomes red. The
buzzer sounds and system stops
working.
EGO setting value should be higher
than temperature settings of
temperature controller. Check if there
are problems of temperature
detecting probe.
5
When there is circulating water
shortage, the alarm light will become
red. The buzzer sounds and system
stops working.
Low level alarm
Ensure smooth water supply.
6
Temp. controller
Temperature setting and control.
7
Pump switch
Turn on and off the pump.
Note: motor rotating direction should
be correct.
8
Heater switch
Turn on and off the heater. Heater switch is applicable only after
pump is turned on.
Connect the machine with power
supply and turn on main switch. This
indicator turns green.
When phase reversal or phase
shortage occurs, it becomes red. The
buzzer sounds, system Could not be
activated.
Note! Do not remove any electrical
parts or terminals after the power is
on.
Turn off the machine. Exchange the
place of two of the electrical wires of
main power supply.
When motor current exceeds the limits,
the buzzer sounds. Motor overload
alarm is red and system stops working.
9
Drainage switch Press this button when system needs
vacuum drainage.
Notice: Execute drainage after turn on
manual release valve.
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