Air Purging And Leakage Test - Electrolux EXl09HL1W Installation Manual

C. Dain piping
The drain hose should
point downward for
Do not place drain piping as indicated below:
Accumulated
Do not rise
drain water
Water Water
leakage leakage
Step 11:Air Purging and Leakage Test
Air and moisture in the refrigeration system
haveundesirable effects as indicated below:
System pressure increase.
Operating current rise.
Moisture in the refrigeration circuit may freeze
and block the capillary tubing.
Water may lead to corrosion of parts in the
refrigeration system.
41
Drain hose
Downward
slope
Tip of drain
hose dipped
Space less
Air
in water
than 50mm
Water
Ditch
leakage
Therefore, the indoor unit and tubing between
the indoor and outdoor units must be tested
for leakage and evacuated to remove any non-
condensables and moisture from the system.
Air Purging With Vacuum Pump
Preparation
Check that each tube (both liquid and gas
side tubes) between the indoor and outdoor
units have been properly connected and
all wiring for the test has been completed.
Remove the service valve caps from both gas
and liquid sides on the outdoor unit.
For detailed data of pipe length and
refrigerant amount, please refer to page 6.
caution
Both liquid and gas side service valves
on the outdoor unit are kept closed at this
stage.
When relocate the unit to another place,
performevacuation using vacuum pump.
Make sure the refrigerant added into the
air conditioner is in liquid form in any
case.
Caution in Handing
the Stop Valve
Operation of opening stop valve:
Open the valve stem until it hits against the
stopper. Do not try to open it further.
Operation of closing stop valve:
Securely tighten the valve stem with a
special tool. Then securely tighten the valve
stem cap with a spanner or the like.