Unique Klasse DPA-246LG, Service Manual

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12
Pump down (refrigerant recovery)
9
S Stta arrtt c co oo olliin ng g o op pe erra attiio on n..
((C Ch he ec ck k iiff c co om mp prre es ss so orr o off o ou uttd do oo orr u un niitt iis s
o op pe erra attiin ng g..))
P Pu um mp p- -d do ow wn n ((rre effrriig ge erra an ntt rre ec co ovve erryy)) iis s tth he e p prro oc ce es ss s tto o
c co olllle ec ctt rre effrriig ge erra an ntt rre em ma aiin niin ng g iin n iin nd do oo orr u un niitt a an nd d
c co on nn ne ec cttiio on n p piip piin ng g lliin ne e a an nd d s stto orre e iitt iin n o ou uttd do oo orr u un niitt
ffo orr tth he e p pu urrp po os se e o off m mo ovviin ng g o orr rre ep pa aiirriin ng g a aiirr
c co on nd diittiio on ne err..
Loosen nut caps of gas and liquid service valves ( ⑤ , ⑥ ) and
service port cap of gas service valve ( ⑦ ).
Connect low pressure hose of manifold gauge ( ③ ) to service
port of gas service valve.
Low pressure hose valve of manifold gauge (
①
) must be
closed.
Completely close liquid service valve by rotating it in
clockwise direction with a hexagonal wrench.
When low pressure of manifold gauge drops to 0kgf/cm2,
completely close gas service valve by rotating it in clockwise
direction with a hexagonal wrench.
Immediately stop the operation of air conditioner. (Refrigerant
is not being circulated. Therefore breakdown of compressor
may occur if air conditioner is not stopped immediately.)
Disconnect manifold gauge and reassemble nut caps and
port caps (to prevent refrigerant leakage).
Low High
Pressure
gage
1
2
3
5
4
7
6
8
IDU
ODU
Gas
Liquid