Component Maintenance Manual
EFFECTIVITY: ALL
21-00-22
Page
7001
JULY 21, 2011
ASSEMBLY
TASK 21-00-22-40-801
9.0
R12 AIR CONDITIONING SYSTEM COMPONENT - ASSEMBLY
SUBTASK 21-00-22-99F-013
9.1
General:
9.1.1
Refer to Illustrated Parts Listing (IPL) during assembly procedures for figure/item numbers
(Section 11).
WARNING
: SERVICE TECHNICIANS ARE ADVISED TO OBSERVE STANDARD SAFETY
PRECAUTIONS, SUCH AS WEARING PERSONAL SAFETY GEAR, TO PREVENT INJURY WHILE
PERFORMING SERVICE TO THE UNIT.
CAUTION
: SERVICE TECHNICIANS MUST PREVENT CONTAMINATION OF INTERNAL SYSTEM
PLUMBING DURING ANY SERVICING AND/OR MAINTENANCE OPERATION. THIS INCLUDES NOT
ALLOWING THE RECEIVER DRYER TO BE EXPOSED TO ATMOSPHERIC CONDITIONS FOR ANY
LENGTH OF TIME. ALL PLUMBING LINES SHOULD REMAIN CAPPED WHENEVER POSSIBLE DURING
THE SERVICING OF THE SYSTEM.
CAUTION
: RECEIVER DRYER MUST BE REPLACED ANY TIME THE VCS PLUMBING IS OPENED FOR
MAINTENANCE. REFER TO DISASSEMBLY (SECTION 5) AND ASSEMBLY (SECTION 9).
9.1.2
Gain access to the Compressor Condenser Module and Evaporator Module Assembly (refer
to the aircraft maintenance manual for removal of access panels and other hardware that
might need to be removed)
9.1.3
Verify that power is removed from aircraft. If it is not practical to remove aircraft power,
technician must pull and collar applicable circuit breakers.
9.1.4
After assembly of any component requiring installation of refrigerant plumbing or hoses,
charge refrigerant system (refer to Servicing, Section 13).
NOTE
: A functional test should be performed any time one or more components are removed and replaced.
Prior to starting functional test, ensure that all components of the assembly are installed. Refer to Test and
Fault Isolation Section 3.
9.1.5
Tools, fixtures, equipment, or consumable items required
Small hand tools and socket set
Tape
Spring
Scale
Belt Tensioning Tool
Measuring
device
