ELL Solid RG10A/BGEF Bedienungsanleitung Seite 41

AIR EVACUATION
NOTICE
When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to force the valve to open
further.
Preparations and precautions
Air and foreign matter in the refrigerant circuit
can cause abnormal rises in pressure, which can damage
the air conditioner, reduce its efficiency, and cause injury.
Use a vacuum pump and manifold gauge to evacuate the
refrigerant circuit, removing any non-condensable gas and
moisture from the system. Evacuation should be performed
upon initial installation and when unit is relocated.
BEFORE PERFORMING EVACUATION
Check to make sure the connective pipes
between the indoor and outdoor units
are connected properly.
Check to make sure all wiring is
connected properly.
Evacuation Instructions
1. Connect the charge hose of the manifold gauge
to service port on the outdoor unit's low
pressure valve.
2 .
Connect another charge hose from the manifold gauge to
the vacuum pump.
3 . Open the Low Pressure side of the manifold
gauge. Keep the High Pressure side closed.
4. Turn on the vacuum pump to evacuate the system.
5. Run the vacuum for at least 15 minutes, or until
the Compound Meter reads -76cmHG(-10
Outdoor unit
Compound
pressure
Pressure hose
Charge hose
Low pressure
5
Pa).
Manifold
Gauge
-76cmHg
Pressure
gauge gauge
Low
High
pressure
valve
valve
or
Charge
hose
valve
6 . Close the Low Pressure side of the manifold gauge,
and turn off the vacuum pump.
7 . Wait for 5 minutes, then check that there
has been no change in system pressure.
8. If there is a change in system pressure, refer
to Gas Leak Check section for information
on how to check for leaks. If there is no
change in system pressure, unscrew the cap from the
packed valve (high pressure valve).
9. Insert hexagonal wrench into the packed valve (high
pressure valve) and open the valve by turning the
wrench in a 1/4 counterclockwise turn. Listen for gas to
exit the system, then close the valve after 5 seconds.
10.
Watch the Pressure Gauge for one minute
to make sure that there is no change in pressure.
The Pressure Gauge should read slightly higher than
atmospheric pressure.
11.
Remove the charge hose from the service port.
valve body
12. Using hexagonal wrench, fully open both the high
pressure and low pressure valves.
Tighten valve caps on all three valves (service port,
13.
high pressure, low pressure) by hand. You may tighten it
further using a torque wrench if needed.
Vacuum
pump
40
Flare nut
Cap
valve stem