Title: Brukermanual for Refra varmepumpe.pdf
Procedure to check the functioning of the high and low pressure relays. 1. Turn off the machine. 2. Connect the test pressure gauge to the discharge line. 3. Make sure the control pressure gauge and gauge discharge machines are the same. Change the setting switch, make sure it is working and that the pressure of the relay corresponds to a pressure control gauge. 4. Bring back the original setting relays. Disconnect the test pressure gauge.Procedure to check the functioning of the low pressure switch mounted on the suction line is similar. Test pressure gauge connect to the suction line.