Charging The System; 3B6 - Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual

PIPER CHEROKEE WARRIOR SERVICE MANUAL
l. Press the RECOVER key on charging station keypad.
m. To assure complete recovery of refrigerant:
1. Wait 5 minutes. Observe pressure gauges for a rise above zero (0),
2. If a rise occurs, press the HOLD/CONT keys.
3. Repeat as necessary until system maintains pressure for two minutes.
Drain oil separator after each job. Display will indicate OIL
(OUNCES) or (GRAMS) as a reminder
n. SLOWLY open oil drain valve. Drain oil into the oil catch bottle. When all recovered oil has
been completely drained, close oil drain valve.
o. Measure the amount of oil in the catch bottle. The same amount of new oil must be added to the
system before charging the system.
p. To enter diagnostic mode simultaneously press the SHIFT/RESET and ENTER keys To display
the amount of refrigerant recovered by the unit, press the 3 key. The panel display will read the amount of
recovered refrigerant in pounds or kilograms.
q. Simultaneously press the SHIFT/RESET and ENTER keys to clear internal counter. Press
SHIFT/RESET to return to the main menu.

14-13. CHARGING THE SYSTEM.

Because United States environmental regulations prohibit the
release of refrigerant into the atmosphere, an appropriately
certified charging station MUST BE USED to charge any air
conditioning system.
a. Using Robinair 34700 charging stand. (Refer to Figure 10)
When system is able to maintain 24 to 26 in Hg. pressure on the low side gauge (GAUGE 1) per
paragraph 14-10, a, 13 through 15, or 14-10, b, 14 through 16, above, charge system as follows:
1. Check that main power switch is OFF.
Do not place any weight, including hands and/or feet, on
refrigerant tank or scale during charging process. Any weight
disturbance will cause an incorrect transfer of refrigerant.
2. Check that the LBS/KG. selector switch on back of unit is in desired measurement mode.
You may enter the amount of refrigerant to be charged when
the unit is turned ON. The unit will S TORE the amount in
m e mory UNTIL it is TURNED OFF.
3. Open the low side (blue) valve on units control panel.
4 . If message PROGRAM and CHANGE do not display, press the CHG key to enter the
P R OGRAM mode.
Added: February 28, 1995
NOTE
NOTE
CAUTION
NOTE

3B6

Island Enterprises
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