Piper Cherokee Six Service Manual page 689

PIPER CHEROKEE SIX SERVICE MANUAL
1. CYLINDER PRESSURE
GAUGE
887
2
COMPOUND GAUGE
3. VALVE, LOW PRESSURE
CONTROL 1
4. VALVE, VACUUM CONTROL
2
9
24
CHARGING CYLINDER
6.
BRACKET
7. SIGHT GLASS
4 19
8.
CYLINDER BASE
VALVE
9.
HIGH PRESSURE GAUGE
12
10. VALVE, HIGH PRESSURE CONTROL
13 25
11. VALVE, REFRIG. CONTROL
5
12. CHARGIN LINE HOSE HOLDER
13.
BRACKET
26
14. LOW PRESSURE CHARGING LINE
614
15.
HIGH PRESSURE
CHARGING LINE
16. HEATING
ELEMENT PLUG
15
17. VACUUM PUMP
7
18. OIL FILL LOCATION
19. NECK ASSEMBLY
20. REFRIGERANT
DRUM SUPPORT
21.
REFRIGERANT DRUM VALVE
22. VACUUM
PUMP VALVE
23. VACUUM PUMP EXHAUST
PORT
17
24.
TOP CYLINDER VALVE
22
25.
REFRIGERANT DRU
2330
27. REFRIGERANT DRUM
REDUCER
28.
CHARGING CYLINDER HOSE
31
29.
VACUUM PUMP INTAKE
HOSE
30. VACUUM PUMP
SWITCH
31.
VACUUM PUMP POWER CORD
Figure 13-7. Charging Stand
13-15. WITH A CHARGING STAND. This is the preferred method of charging the systen..
NOTE
The following instructions apply to Kent Moore, J23500
charging stand. Refer to Figure 13-7.
a. With the system discharged and evacuated, proceed to hook-up the charging stand.
(Refer to Figure 13-8.)
b. Fill the charging cylinder by opening the valve at the base of the charging cylinder
and filling the sight glass with two pounds of liquid refrigerant.
c.
If refrigerant stops filling the sight glass, open the valve at the top of the gauge neck
assembly intermittently to relieve head pressure and allow refrigerant to continue filling the
sight glass to the required amount.
d. When refrigerant reaches the required level in the sight glass, close both the valve at
the base of the cylinder and the valve at the bottom of refrigerant tank. Be sure the top
valve is fully closed.
NOTE
If bubbling occurs in sight glass, reopen the cylinder base
valve momentarily to equalize drum and cylinder pressure.
ACCESSORIES AND UTILITIES
Issued: 8/17/72
3G23