Panasonic 2WAY Multi Technical & Service Manual page 35

• 2-1
Visually inspect all portions of the coolant system while stopped.
Are there any coolant leaks, or evidence of coolant leaks? Also, are there any water leaks from any of the
following four locations when the water circuit (*) is operated and the pump activated?
* Water circuit operations: Performed with the [  ] enforced water circuit setting on the No.4
Test Run/Forced Settings menu.
1) Hoses and connections
2) Flange connections
3) Threaded connections
4) Tubing/welds
• 2-2
Collect oil from oil pan and check for emulsifi cation. (Emulsifi cation → Mixed)
• 3-1
Check for any fl uctuations in coolant pump rotation speed and any evidence of air being mixed during air
extraction when the air purge operations are performed by selecting [  ] in the [Automatic Air
Purging Mode] on the No.4 Test Run/Forced Settings menu.
• 4-1 Coolant Pump Inspection
If the coil resistance for each phase is around 14 to 18Ω, everything is normal.
• 5-1 Coolant electrical three-way valve inspection
Start up the unit and then perform the inspection with the [  ] enforced water circuit setting
on the No.4 Test Run/Forced Settings menu. This switches alternately between the radiator (3 minutes)
and sub-evaporator (1 minute 15 seconds,) so valve operations can be determined in accordance with tube
temperature fl uctuations.
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