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SUBTASK 21-00-09-30-004
8.5
Evaporator Module repair procedures:
8.5.1
The following components may require periodic repair and/or replacement (refer to the Inspection Schedule in Section 7 for mandatory time intervals) (refer to Figure 10003):
•
Evaporator Coil
•
Evaporator Housing Assembly (40,50)
•
Blower Assembly (10,20,30)
•
Condensate Drain (part of Evaporator Housing Assembly)
•
Water Deflector
8.5.1.1
EVAPORATOR COIL: The evaporator coil fins can, over time, become clogged with dirt, dust, and other foreign matter. The component can also become damaged. The coil return bends can, over time, become damaged. Dents, nicks, cracks, and other damage can cause less than optimal performance. It is essential that the condenser coil remain clear and undamaged for proper operation of the evaporator module assembly. Refer to Cleaning (Section 6) for proper cleaning procedures. If coil fins are bent, use a fin comb and try straightening the fins. If fins are excessively damaged or the return bends are excessively damaged, the entire evaporator module assembly must be removed (refer to Disassembly, Section 5) and sent to Enviro Systems for repair. Contact Enviro Systems customer service.
8.5.1.2
EVAPORATOR HOUSING ASSEMBLY: The components that comprise the evaporator housing assembly are the shroud (40) and escutcheon (50). Over time, the shroud and escutcheon may show signs of separating and this can cause the evaporator module assembly to have less than optimal performance. After insuring that the seam between the shroud and escutcheon has been cleaned according to the cleaning procedures (Section 6), apply a new bead of RTV and smooth. Allow RTV to cure for a minimum of 24 hours before operating system. If housing assembly is damaged in any way other than seam separation, the entire Forward Evaporator Module Assembly must be removed and sent to Enviro Systems for repair. Contact Enviro Systems customer service.
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 6005
FEBRUARY 16, 2010
CAUTION: USE EXTREME CARE TO PREVENT DAMAGE OR BENDING TO THE BLOWER WHEEL FRAME AND/OR BLADES.
8.5.1.3
BLOWER ASSEMBLY: The components that comprise the blower assembly are the blower motor (10), blower scroll (30) and blower wheel (20). Over time, these components can become dirty or damaged causing the assembly to have less than optimal performance. Occasionally damage will occur to unit that requires repair and/or replacement of one or more of the assembly components.
8.5.1.3.1
If blower motor wheel (20) is damaged, such as having bent or cracked blades, removal and replacement is required. Refer to Disassembly (Section 5) for removal procedures. Refer to Assembly (Section 9) for installation procedures. After completing the removal and installation of the new blower wheel, perform functional check (Section 3). Contact Enviro Systems customer service to order new blower wheel.
8.5.1.3.2
If blower motor scroll (30) is damaged in any way, the entire Forward Evaporator Module Assembly must be removed and sent to Enviro Systems for repair. Contact Enviro Systems customer service.
8.5.1.3.3
If blower motor (10) is damaged or is not operating to specifications, removal and replacement is required. Refer to Disassembly (Section 5) for removal. Refer to Assembly (Section 9) for installation. After completing the removal and installation of the new blower motor, perform functional check (Section 3). Contact ENVIRO Systems customer service to order a new motor or to return entire assembly.
8.5.1.4
CONDENSATE DRAIN: The condensate drain (part of the housing assembly) can, over time, become damaged. It is essential that the drain remains in excellent condition for proper operation of the evaporator module assembly. If the condensate drain is damaged, the entire Forward Evaporator Module Assembly must be removed and sent to Enviro Systems for repair. Contact Enviro Systems customer service.
8.5.1.5
WATER DEFLECTOR: The water deflector can, over time, become damaged. It is essential that the deflector remains in excellent condition for proper operation of the evaporator module assembly. If the water deflector is damaged, the entire Forward Evaporator Module Assembly must be removed and sent to Enviro Systems for repair. Contact Enviro Systems customer service.
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 7001
FEBRUARY 16, 2010
ASSEMBLY
TASK 21-00-09-40-801
9.0
R-134a AIR CONDITIONING SYSTEM COMPONENT - ASSEMBLY
SUBTASK 21-00-09-99F-013
　
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