AirComm Corporation Cessna Citation 550 560 Maintenance Manual
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Page 11
Products, Inc.
Maintenance Manual
21-50-00
May 15/95 Page 1
AIR CONDITIONING SYSTEM - SYSTEM DESCRIPTION
1. GENERAL
The air conditioning system for the Cessna 500 series aircraft consists of a refrigerant
R134a vapor cycle cooling system. This system allows the co-pilot to control cooling
for a comfortable aircraft cabin. Figure 1 shows a general arrangement of the air
conditioning system.
The co-pilots control panel...
Page 12
Products, Inc.
Maintenance Manual
21-50-00
May 15/95 Page 2
An evaporator/blower unit is located in the aft cabin at the end of the recessed isle
(at floor level) within the aircraft interior. It provides cooling airflow for the cabin
area of the interior. A forward evaporator is located at the cockpit floor and
provides cooling airflow to the flight crew through a floor mounted air outlet or
through dedicated ducting at the pilots...
Page 13
Products, Inc.
Maintenance Manual
21-50-00
May 15/95 Page 3
Figure 1. Air Conditioning System General Arrangement
Page 14
Products, Inc.
Maintenance Manual
21-50-01
May 15/95
Page 1
ELECTRICAL
DESCRIPTION AND OPERATION
1. GENERAL
The air conditioning system consists of one high energy compressor/condenser
drive motor and two centrifugal evaporator blowers (Fwd) and (Aft). The system is
controlled by a mode switch with Air Conditioning Off and Fan Only position. Each
evaporator has a high and low position switch. A blue...
Page 15
Products, Inc.
Maintenance Manual
21-50-01
May 15-95
Page 101
TROUBLESHOOTING
1. GENERAL
The following procedures are used for troubleshooting the electrical system and the
electrical interfaces with the other assemblies of the air conditioning system.
2. TOOLS AND EQUIPMENT
Designation
Ref. No.
Qty
Remarks
Service Pressure Gauge
Comm. Avail.
1
None
Multi-meter
Comm. Avail.
1
None
28vdc...
Page 16
Products, Inc.
Maintenance Manual
21-50-01
May 15/95
Page 102
7. Check for power at motor . If power is present, proceed to step 8. If
power is not present on either pin and load/shed conditions of step 4 are
met, check power on the load shed unit at connector Pin 1. If power is
present, system problem exists in load shed system start unit. If power is
not present, check 15 amp CB (3) and mode switch (26).
8. Fault is...
Page 17
Products, Inc.
Maintenance Manual
20-50-01
May 15/95
Page 103
5. Remove blower assy from aircraft. Remove the four screws attaching the
motor to the housing. Using a 1/8 allen wrench remove blower wheel (use
extreme care not to bend blower wheel). Cut power wires at splice and
remove Gnd wire from GND terminal. Install new motor in reverse order.
E. AFT Evaporator Blower will not operate in the low speed setting.
1....
Page 18
Products, Inc.
Maintenance Manual
21-50-01
May 15/95
Page 1001
Figure 1. Electrical System
Page 19
Products, Inc.
Maintenance Manual
21-50-01
May 15/95
Page 1002
FIG. ITEM
PART
NUMBER
NOMENCLATURE
EFFECT
UNITS
PER
ASSY
1 1
2
3
4
5
6
7
8
9
10
11
12
13
14
82-02-106
JBS11001-1
MS3320-15
MS25361-100
ES32036-1
JBS5005-1
JBS2030-3
JBS2048-3
MS25181-2
MS25036-101
ES50162-1
MS25036-125
MS25036-157
MS25036-123
Electrical...
Page 20
Products, Inc.
Maintenance Manual
21-50-01
May 15/95
Page 1003
FIG. ITEM
PART
NUMBER
NOMENCLATURE
EFFECT
UNITS
PER
ASSY
15
16
17
18
21
22
23
24
25
26
MS25036-106
MS25036-108
84-00-07-8
ES57016-3
ES53010-3
MS25036-124
MS25036-156
ES55077-2
ES57016-6
ES57016-5
Terminal
Terminal
Load Shed Assy
Switch
Connector
Terminal
Terminal...