H50/150 Smart – User Manual
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When the low liquid level sensor is activated for more than 10 seconds, the touch controller
displays liquid level alarm and the buzzer sounds. The controller automatically shuts down the
solenoid valve to stop liquid cooling. The unit turns back to normal state once the proper liquid
level in the tank is reached.
c). LIQUID PRESSURE ALARM
When the pressure sensor detects that the liquid circuit pressure is higher than the set value +
high pressure limit or is lower than set value – low pressure limit for more than 5 seconds, the
touch controller shows liquid pressure alarm and the buzzer sounds. The unit turns
back to normal state once the proper liquid level in the tank is reached.
d). LIQUID FLOW RATE ALARM (Optional)
When the Switch Times alarm is activated, the touch controller shows flow rate abnormal alarm
and the buzzer sounds if the flow switch has been off for more than 5 seconds.
When the Water Flow Rate Analogy Amount alarm is activated, the touch controller shows flow
rate abnormal alarm and the buzzer sounds if the flow sensor detects a flow rate higher than
set value + high limit value or lower than set value – low limit value. The unit turns back to
normal state once the proper liquid level in the tank is reached.
Note: the buzzer can be stopped by pressing any key.
4.2.4 START UP/SHUT DOWN
Before starting the unit, double-check all electrical and plumbing connections.
Open the top panel of the water tank, remove its cap and fill it with water by using a funnel.
For H50 series, it is better to exhaust the air in the pump before the first use, just put the
supply tube in a container, switch on the unit for few seconds and leave flow out air and water.
Place the switch of the unit to the up position, the controller will flash and the unit will start.
Place the switch of the unit to the down position, the unit will shut down.
NOTE: if you want to turn on the unit at once after shut down, please wait for 10
seconds.
4.2.5 PRESSURE REGULATION VALVE OF SMART H150
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