Piper SARATOGA PA-32-301 Maintenance Manual page 131

PIPER AIRCRAFT
PA 32-301/301T
MAINTENANCE MANUAL
1. CYLINDER PRESSURE GAUGE
2. COMPOUND GAUGE
3. VALVE, LOW PRESSURE CONTROL 1
4. VALVE, VACUUM CONTROL
2
5. CHARGING CYLINDER
6. BRACKET
Figure 21-9. Charging Stand
CHARGING STAND METHOD.
This
is
the preferred method of charging the system.
- NOTE -
The following instructions apply to Kent Moore, J23500 charging
stand. (Refer to Figure 21-9.)
1. With the system discharged and evacuated. proceed to hook-up the charging stand. (Refer to Figure
21-10.)
2. 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.
3. 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.
4. When refrigerant reached 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.
21-57-01
Page 21-25
1F11
Revised: August 11. 1983