R-134A Ac System Servicing (Current Config) - MD Helicopters MD Explorer Servicing And Maintenance

CSP−900RMM−2
(29). If necessary, install right aft station
230.00 bulkhead baggage compartment
interior trim panels (ref. Section
25-50-00).
C. R−134A AC System Servicing (CURRENT
CONFIG)
(Ref. Figure 202)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C117 Oil, Daphne Hermetic (R−134A)
C815 Refrigerant, R−134A
Special Tools
(Ref. CSP−SPM)
Item Nomenclature
T701 Refrigerant Recovery and Recycling
Station
T702 Electronic Leak Detector
CURRENT CONFIGURATION
LEFT FORWARD TRANSMISSION DECK SHOWN
1. LOW PRESSURE INLET LINE CAP (REF. IPL, 21−50−00,
FIG. 2)
2. HIGH PRESSURE OUT LINE CAP
Figure 202. AC Servicing Ports (CURRENT
CONFIG)
Page 204
Revision 34
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
1
2
9G12-015
12-00-00
Make sure the personnel that
CAUTION
maintain and service the air-
conditioning system have the necessary
education and experience. The system has
complex and specialized components that
require specific knowledge.
Failure
CAUTION
manufacturers recovery and re­
cycling station servicing requirements and
management of refrigerants, can result in
damage to the air-conditioning system.
NOTE:
Obey all government and local regula­
tions with you fill and evacuate the AC sys­
tems with refrigerant substances.
(1). Remove Access Panel L155 to get
access to the AC service ports (ref.
Section 53-30-00).
(2). Remove caps (1 and 2) from service
ports (Schrader valve) on inlet and
outlet tubes.
(3). Service air conditioning with a refriger­
ant recovery and recycling station
(T701). Refer to related manufacturers'
publications for recovery and recycling
station operation instruction information.
(4). Pull a vacuum of approximate 29.50 to
29.90 inHg of vacuum for 30 min­
utes.
(a). Measure quantity of oil removed.
(5). The system must be able to maintain
and hold 29.20 to 29.90 inHg of
vacuum for 30 minutes without
noticeable change in vacuum reading
after pump has been turned off.
(a). If the AC system keeps a vacuum for
30 minutes, go to Step (11).
(b). If the AC system does not keep a
vacuum for 30 minutes, go to Step
(6).
(6). Remove Access Panel L210 (ref. Section
53-30-00).
(7). Remove Access Panel T155 to get
access to the evaporator (ref. Section
53-30-00).
(8). Remove Access Panel R210 (ref. Section
53-30-00).
to comply with