Operating manual ef cooling Ernst H. Furrer AG
Cooling unit EVO 45, 0390.013 Issue: 07 / 2015 Chapter-Page 6-21
6.4 Procedure for commissioning
6.4.1 Medium circuit
6.4.1.1 Medium requirements
The operating medium to be used is defined in Chap. 13.1 Technical data.
Only pour in a mixture of 33 % propylenglycol / 67 % clean water.
6.4.1.2 Commissioning the medium circuit
Actions required:
– Main switch "ON"
– All motor protection switches in "0" position except the motor protection switch for the
controller power in "I" position (see electrical diagram")
– Undo the filter cup of the water filter with the filter wrench and remove. Make sure that the
O-ring doesn’t get lost.
– The filter cup must be removed so the pump can vent
– Remove the tank lid
– Fill the tank with the operating medium to the "Max" mark
– Install the filter cartridge in the corresponding filter cup
– Make sure that the O-ring sits uniformly in the groove of the filter cup
Venting the pumps:
– Pump equipped with a bypass is vented automatically.
Commissioning the pumps is only possible if the low level switch is covered with water.
– Motor protection switches of the pumps in the "I" position (see electrical diagram)
– Acknowledge alarm
– Switch on the pump via the remote control
– Check the specified direction of rotation of the pump
If the direction of rotation of the cooling unit is wrong, de-energise the cooling unit and
swap the 2 phases of the main connection cable.
– While there is air in the pipelines, a flow alarm appears. The alarm can be acknowledged
after waiting one minute. This process must be repeated until there is no flow alarm
message on the display.
– Visually inspect the entire water circuit for leaks
– Check the water level again (via the high level switch) and top up water to the "Max." mark if
necessary
– Fit the tank lid
– Check the setpoint adjustment of the temperature regulator in accordance with the project
specification and correct the setpoint adjustment as needed
6.4.2 Refrigerant circuit
– After executing the tasks on the water circuit, all motor protection switches must be placed
in the "1" position (see electrical circuit diagram)
– Acknowledge alarm
– The cooling unit is ready for operation and the temperature controller takes over regulation
of the water temperature
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