MD Helicopters MD Explorer - Page 345

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 203
Revision 34
12-00-00
NOTE: Do not add more than 5.5 oz (160 cc)
total.
Oil, Daphne Hermetic (R-134A) (C117)
(14). Operate the rotorcraft at ground idle
(ref. applicable RFM).
(a). For a R-134A refrigerant system,
add the quantity of refrigerant oil
removed in Step (4).(a). then add 2.0
to 3.0 oz (60 to 90 cc) of daphne
hermetic oil (C117).
NOTE: Do not add more than 5.5 oz (160 cc)
total.
(b). Go to Step (15).
(15). Replace oil removed from system as
measured in Step (4).(a).
NOTE: Do not add more than 5.5 oz (160 cc)
total.
Refrigerant, R12 (C806)
Refrigerant, R-134A (C815)
(16). Accurately and carefully meter refriger
ant through refrigerant recovery and
recycling station (T701).
(a). If the system uses R12, add 5.0 lb
(2.3 kg) of R12 refrigerant (C806).
(b). If the system used R-134A, add 3.5
lb (1.6 kg) of R-134A refrigerant
(C815).
(17). Examine system for leaks with elec
tronic leak detector (T702).
(18). Repair leaking connection that can be
tightened. Other repairs will require
evacuation of the system.
Use only a qualified mechanic or
pilot to start and operate the en
gines.
(19). Start the right engine (ref. applicable
RFM).
Rotor Blades
(20). Set the AC/VENT switch to COOL
LOW position on the UTILITY PAN
EL.
(a). If the AC compressor does not
operate, refer to the Fault Isolation
Troubleshooting Table 101 (ref.
Section 21-50-00).
(b). A two-second time delay will occur
before the compressor and condenser
fans operate.
(c). The evaporator fan must operate
immediately
(21). With the AC/VENT switch set to the
COOL LOW position and the right
engine in operation at ground idle, do a
check for cool/cold air from the 10 AC
gasper assemblies.
(a). If there is cool/cold air, turn the
AC/VENT switch to OFF and stop
the engine.
(22). Let the refrigerant in the AC high-
pressure and low-pressure subsystems
equalize.
(23). Disconnect refrigerant recovery and
recycling station (T701).
(24). Install caps (1, 2) from service ports
(Schrader valve) on compressor.
(25). If necessary, install Access Panel T155
(ref. Section 53-30-00).
(26). If necessary, install Access Panel L210
(ref. Section 53-30-00).
(27). Install Access Panel R210 (ref. Section
53-30-00).
(28). If necessary, install access panels A235,
AR250, and AL250 (ref. Section
53-20-00).
CAUTION