Mitsubishi Electric QAHV-N560YA-HPB Service Handbook page 171

[ IX Troubleshooting ]
Connect the container to collect used cleaning water as shown in
Figure 4.
Exhaust water drainage route (See Figure 4.): (1→2→Heat pump
unit→4)
Using a submersible pump, drain the cleaning water in the cleaning
water tank to the exhaust water tank.
Order in which submersible pump is to be used (See Figure 4.): (3
→4)
Use this circuit for rinsing out the system with water after cleaning.
(5) Restoring the water circuit
After rinsing out after neutralizing the water circuit, restore the water circuit.
Then, open all valves at the hot water supply port 3, and water inlet 4.
(6) Air-vent operation
Perform an air-vent operation.
Operating the system with the air trapped in the pipe will leave the built-in pump idling for a long time and will result in
malfunction.
1 Disposal of exhaust water
Do not drain the exhaust water into a drain ditch. Collect the exhaust water, have it properly disposed of by an authorized
industrial waste disposal agency.
HWE1517A
Hot water
supply port
P
2
Figure 4 Exhaust water circuit
- 164 -
Gas cooler inlet
3
P
1 4
GB