12.5.3 Drainage test
12.5.3.1. Water leakage test
After finishing the construction of drainage pipe
system, fill the pipe with water and keep it for
24 hours to check whether there is leakage at
joint section.
12.5.3.2. Water discharge test
1. Natural drainage mode (the indoor unit
without drainage pump)
Infuse above 600ml water through water test
hole slowly into the water collector, observe
whether the water can discharge through the
transparent hard pipe at drainage outlet.
2. Pump drainage mode
2.1 Disconnect the plug of water level switch,
remove the cover of water test hole and slowly
infuse about 2000ml water through the water
test hole, be sure that the water will not touch
the motor of drainage pump.
2.2 Power on and let the air conditioner
operate for cooling. Check operation status
of drainage pump, and then connect the
plug of water level switch, check the
operation sound of water pump and
observe whether the water can discharge
through the transparent hard pipe at
drainage outlet. (In light of the length of
drainage pipe, water shall be discharged
about 1 minute delayed)
2.3 Stop the operation of air conditioner, power
off the power supply and put the cover of
water test hole back to the original place.
a. After stopped the air conditioner 3 minutes,
check whether there is anything abnormal.
If drainage pipes have not been distributed
properly, over back-flow water shall cause
the flashing of alarm indicator at
remote-controlled receiving board and
even water shall run over the water
collector.
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