Panasonic NR-AF162SNAE / NR-AF162SNWG Service Manual ▷ View online
9. MEMASUKKAN REFRIGERANT DARI CYLINDER KEDALAM CHARGE CYLINDER
REFRIGERANT CHARGING FROM CYLINDER TO INSIDE OF CYLINDER CHARGE
Preparation:
a
a
b Connect Cylinder Charge and Control Valve.
1.
2.
2.
3.
4.
5.
6.
Notes:
a.
b.
c.
d.
10. REFRIGERANT CHARGE
1.
2.
3.
4.
Open the Valve at the lower part of charge
cylinder.
cylinder.
When charging HFC-134a to inside Cylinder
Charge, the Valve at top Cylinder Charge must
be small open to let out HFC-134a.
Charge, the Valve at top Cylinder Charge must
be small open to let out HFC-134a.
Find the scale which is the nearest to
pressure reading at the cylinder gauge. And
place the scale in the center of the glass tube.
pressure reading at the cylinder gauge. And
place the scale in the center of the glass tube.
Confirm the set amount of glass to be
charged in the refrigerator be refering to the
wiring diagram or the name plate of the unit.
And put a mark at the division indicating the
amount of HFC-134a which should be left in
the charge cylinder glass tube after the set
amount of gas is charged.
charged in the refrigerator be refering to the
wiring diagram or the name plate of the unit.
And put a mark at the division indicating the
amount of HFC-134a which should be left in
the charge cylinder glass tube after the set
amount of gas is charged.
When HFC-134a cylinder is put upside down, as refrigerant discharge as liquid, never
loosen the valve at cylinder charge and the adaptor charge.
loosen the valve at cylinder charge and the adaptor charge.
Do not touch gaseous Refrigerant directly, cause burn skin by "freezer burn" due to low
temperature.
temperature.
Slowly open the valve on the lower sie of
cylinder and charge the unit with HFC-134a.
cylinder and charge the unit with HFC-134a.
When the set amount is amount charge, close the valve. After liquid surface in the glass
tube is stabilized, open the valve a little to charge the gas slowly.
tube is stabilized, open the valve a little to charge the gas slowly.
Close the valve at Cylinder charge and adaptor charge when charging refrigerant is
finished.
finished.
When to disconnect the charge hose, plce HFC-134a cylinder at proper position and
loosen the charge adaptor to let liquid escape.
loosen the charge adaptor to let liquid escape.
When refrigerant discharge completely, close the valve of HFC-134a cylinder.
Put the HFC-134a cylinder upside down (so
that HFC-134a can be put in the Charge
Cylinder as liquid).
that HFC-134a can be put in the Charge
Cylinder as liquid).
Before vacuum pumping process, it should charging the refrigerant from Cylinder HFC-
134a to inside of Cylinder Charge.
134a to inside of Cylinder Charge.
Fix the Adaptor Charge at Cylinder HFC-134a.
Connect the Valve at bottom side of Cylinder
Charge and Adaptor Charge from Cylinder
HFC-134a with Charge Hose.
Connect the Valve at bottom side of Cylinder
Charge and Adaptor Charge from Cylinder
HFC-134a with Charge Hose.
Open the HFC-134a Valve and slack the
Charge Hose at Cylinder Charge to let out the
air, then connect the Charge hose firmly.
Charge Hose at Cylinder Charge to let out the
air, then connect the Charge hose firmly.
Coupler socket
Valve
state
during refrigerant
charging
charging
close
Coupler plug
(one-touch type)
(one-touch type)
Coupler Socket
HFC-134a
Valve
state
during refrigerant charging
open
-17-
5. Close quickly the valve as soon as the set amount is charged.
6.
6.
7.
11. LEAKAGE TEST AND RUNNING TEST
1.
Note:
2. Connect the plug with power supply.
3.
3.
Note:
Leak detector should be the one for exclusive - use for HFC-134a.
Leak detector should be the one for exclusive - use for HFC-134a.
12. PINCH-OFF SEAL OF CHARGE PIPE
13. FINISHING
1.
1.
2.
2.
3.
3.
4.
5. Confirm that no gas leakage from the
sealed part.
Do not make the compressor run when to do
leakage test. While compressor is running,
since the inside piping at low pressure side is
vacuum the state, gas leakage can not be
found out. What's worse, the soup water may
leak into the
leakage test. While compressor is running,
since the inside piping at low pressure side is
vacuum the state, gas leakage can not be
found out. What's worse, the soup water may
leak into the
refrigerating unit and it may
cause a malfunction.
After running the compressor for 3 minutes, confirm that there is a sound of refrigerant
flowing and piping at high pressure side gets hot.
flowing and piping at high pressure side gets hot.
Pinch both charge pipe compressor and
Draye use Pinch Plier.
Draye use Pinch Plier.
Unlock the lever of coupler plug and
remove cover plug.
remove cover plug.
set the compressor retainer, Cover relay
and pin wire.
and pin wire.
Confirm that pipings in the compressor
room do not touch each other.
room do not touch each other.
Run the compressor and confirm that there
is no vibration in the pipings.
is no vibration in the pipings.
Pinch the end of carge pipe use Pinch
Plier.
Plier.
Seal up the end of charge pipe by
melting and complete the sealing by
Brazing.
melting and complete the sealing by
Brazing.
Set the starting Relay and the overload protector. And run the compressor until pressure
reading at the low pressure gauge shows 0 so that remaining refrigerant in the charge hose
is taken in the refrigerating unit.
reading at the low pressure gauge shows 0 so that remaining refrigerant in the charge hose
is taken in the refrigerating unit.
Close the control valve and disconnect the coupler socket at Low pressure side.
Confirm that no gas is leakage from the
brazed part by the leak detector or soup water.
brazed part by the leak detector or soup water.
Pinch-0ff Plier
Coupler Plug
(one-touch type)
(one-touch type)
Coupler Socket
-18-
XIII. SAFETY CHECK
Make sure that the refrigerator repaired is secure and works properly.
1. INSULATION TEST
1
2
3
4 Switch on the power of insulation tester.
( Standar 500 V/ DC, > 10 MOhm ).
2. PUNCTURE TEST
1
2
3
4
5
6
Connect the Service Cord Puncture test into
Elctric source.
Elctric source.
Setting Puncture Test at 1500VAC, 5 mA,
1 minute.
1 minute.
Connect the high voltage cord's pin to the
cabinet and switch on puncture test.
cabinet and switch on puncture test.
Connect the Service Cord pin positive
and negative except grounding.
and negative except grounding.
Connect
the
grounding
pin
and
insulation tester to service cord of
Refrigerator.
Refrigerator.
Connect positif pin Insulation tester to
body of Refrigerating Unit.
body of Refrigerating Unit.
Connect the Service Cord pin positive and
negative except grounding.
negative except grounding.
Place
the
refrigerator
on
the
wooden
surface.
Connect the pin of ground puncture test to
the Service cord of Refrigerator.
the Service cord of Refrigerator.
Insulation test
+
-
Puncture test
+
-
-19-
XIV. INSTRUCTION TO ASSEMBLY PARTS
INDICATED SAFETY PART
57
9
10
11
18
16
17
15
17a
31
30
29
23
20
19
21
13
13a
12a
12
14
1
2
3
7
6
8
32
4
44
45
46
35
33a
33
48
47
53
28
52
50
58
55
56
27
49
54
25
24
36
37
38
39
40
41
42
43
43a
34
PS
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PS
PS
PS
PS
PS
PS
PS
PS
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PS
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PS
PS
PS
PS
PS
PS
5
26
22
14a
59
51a
51
-20-
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