Pilatus PC-12, Manual

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Component Maintenance Manual
EFFECTIVITY: ALL 21-00-22
Page 4002
JULY 21, 2011
SUBTASK 21-00-22-10-001
6.2 Compressor Condenser Module Cleaning Procedures:
6.2.1 The following components of the Compressor Condenser 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).

Compressor Condenser Module Assembly

Condenser Coil

Shroud
6.2.1.1 COMPRESSOR CONDENSER MODULE ASSEMBLY: Over time, the Compressor
Condenser Module assembly will become dirty and require general cleaning. It is
essential that the assembly remain clean to ensure proper operation and optimal
performance. Use soft cloth, a soft utility brush and/or vacuum, or other suitable
cleaning tools, and remove any dirt, dust, or other foreign matter. Prior to the
installation of the motor brushes, commutator should be cleaned with compressed air
blast to remove any carbon dust or contaminants
6.2.1.2 CONDENSER COIL: Over time, the Condenser Coil will become dirty and require
general cleaning. It is essential that the assembly remain clean to ensure proper
operation and optimal performance. The coil fins will, over time, become clogged with
dirt, dust and other foreign matter. It is essential that the coil fins remain clear for
proper operation of the condenser coil. Using a soft utility brush and/or vacuum,
remove any accumulated, lint, dirt, dust and other foreign matter. A small stiff brush
such as a tooth brush can be used to break loose any caked on dirt.
6.2.1.3 SHROUD: The shroud, over time, can show signs of separating from the coil. If
separation is noticed, refer to Disassembly, Section 5 and Repair, Section 9. After
shroud has been removed from coil assembly, clean the mating surfaces carefully with
isopropyl alcohol to remove any dirt, dust, and other foreign matter, to include the old
RTV sealant. For resealing, refer to Repair, Section 8 and Assembly, Section 9.
SUBTASK 21-00-22-10-002
6.3 Evaporator Module Cleaning Procedures:
6.3.1 The following components of the Evaporator Module Assembly will require periodic cleaning
(refer to the Inspection Schedule in section 7 for time intervals) (refer to Figure 10002):

Evaporator Coil Air Inlet

Evaporator Coil Air Inlet Air Filter

Evaporator Housing Assembly

Condensate Drain (part of Evaporator Housing Assembly)