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5.4.1.3
Carefully remove blower motor (10)/blower wheel (20) assembly from scroll (30). A putty knife or similar tool may be required to break the RTV seal around the mounting plate. Save sealing gasket for reinstallation.
5.4.1.4
Loosen blower wheel (20) set screw on blower motor shaft and remove blower wheel.
5.4.2
Removal of Expansion Valve (60)
CAUTION: SYSTEM MUST BE EVACUATED AND REFRIGERANT RECLAIMED PRIOR TO REMOVING THE EXPANSION VALVE.
5.4.2.1
Disconnect expansion valve from coil header tube fitting and place protective cap onto header tube fitting opening.
5.4.2.2
Remove expansion valve bulb from evaporator coil outlet header.
SUBTASK 21-00-09-00-003
5.5
Condenser Blower Assembly disassembly procedures (refer to Figure 10002):
5.5.1
Removal of Condenser Blower (vane axial blower), (70)
5.5.1.1
Disconnect power leads to motor.
5.5.1.2
Remove the 6 cap mounting screws (80,90) that secure the housing of the blower to the shroud.
NOTE: Note direction of blower airflow before removing the condenser assembly.
CAUTION: TAKE EXTREME CARE NOT TO DAMAGE BLOWER HOUSING OR FAN BLADES WHILE REMOVING COMPONENT FROM ASSEMBLY.
5.5.1.3
Remove vane axial blower from shroud. A putty knife or similar tool may be needed to cut RTV between blower and shroud.
5.5.1.4
Lift vane axial blower out of condenser assembly.
5.5.2
Removal of Shroud Assembly (30)
5.5.2.1
Remove condenser blower per 5.5.1.
5.5.2.2
Remove shroud mounting hardware (40,50,60).
CAUTION: TAKE CARE TO PREVENT DAMAGE TO THE SHROUD ASSEMBLY AND COIL WHILE SEPERATING AND CUTTING RTV.
Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
EFFECTIVITY: ALL 21-00-09
Page 3007
FEBRUARY 16, 2010
5.5.2.3
Use a putty knife and cut RTV along shroud and coil mounting surface areas to free shroud from coil.
Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
EFFECTIVITY: ALL 21-00-09
Page 4001
FEBRUARY 16, 2010
CLEANING
TASK 21-00-09-10-801
6.0
R-134a AIR CONDITIONING SYSTEM COMPONENT – CLEANING PROCEDURES
SUBTASK 21-00-09-99F-011
6.1
General:
6.1.1
This section details the procedures required to perform certain cleaning functions. The components listed have certain cleaning procedures associated with them, however these procedures are in no way an all encompassing list of what may be required. Care should be taken to follow the listed procedures and to use common sense when using any cleaning tools or solvents.
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.
WARNING: SERVICE TECHNICIANS ARE ADVISED TO OBSERVE STANDARD SAFETY PRECAUTIONS SUCH AS WEARING SAFETY GLASSES, GLOVES AND PROTECTIVE CLOTHING WHEN USING CERTAIN CLEANING SOLVENTS AND/OR CHEMICALS. INGESTION OF CERTAIN SOLVENTS AND/OR CHEMICALS CAN CAUSE SERIOUS INJURY OR EVEN DEATH. WHENEVER CLEANING PROCEDURES INVOLVE THE USE OF SOLVENTS AND/OR CHEMICALS, IT IS HIGHLY RECOMMENDED THAT THE TECHNICIAN REVIEW THE APPLICABLE MSDS (MATERIAL DATA SAFETY SHEET) PRIOR TO BEGINNING THE PROCEDURE TO FAMILIARIZE THEMSELVES WITH THE HAZARDS ASSOCIATED WITH THAT SOLVENT AND/OR CHEMICAL, AND APPROPRIATE RESPONSE NEEDED SHOULD INGESTION OCCUR.
CAUTION: ALWAYS USE PROTECTIVE COVERINGS AND/OR PROTECTIVE CAPS ON OPEN OR EXPOSED HOLES, PLUMBING, ETC. THIS WILL ENSURE THE COMPONENT STAYS FREE FROM DIRT, DUST, AND ANY OTHER FOREIGN MATTER.
6.1.2
Gain access to the Compressor Drive Module, Condenser Blower Module, or Evaporator Module (refer to the aircraft maintenance manual for removal of access panels and other hardware that might need to be removed)
6.1.3
Verify that power is removed from aircraft. If it is not practical to remove aircraft power, technician must pull and collar applicable circuit breakers.
Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
EFFECTIVITY: ALL 21-00-09
Page 4002
FEBRUARY 16, 2010
SUBTASK 21-00-09-10-001
6.2
Compressor Drive Module cleaning procedures:
6.2.1
The following components of the Compressor Drive Module will require periodic cleaning (refer to the Inspection Schedule in section 7 for time intervals). This is in no way an all encompassing list. If at any time during the inspection process a component is found to be dirty, use a soft cloth to remove all contaminants from external surfaces (refer to Figure 10001).
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OPERATING, SERVICING, AND COMPONENT MAINTENANCE MANUAL(14)
