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rate through the bag decreases. When the coalescer bag does
not let air flow through it, pressure increases. The pressure
increase will cause a piston in the bag condition indicator to be
more than the spring force. This moves the indicator disk into
the red range.
The bag condition indicator shows when you must change the
coalescer bag. Observe the bag condition indicator while the
pack operates in high flow and the air mix valve is in full cold
position. If the indicator disk is in the red range, the coalescer
bag must be changed.
Training Information Point
If you remove the coalescer bag, make sure you carefully
remove and install the inlet shell to prevent damage to the Oring
gaskets. You can use the spring and spring-loaded chain
assemblies on the ends of the coalescer bag for the new bag.
The coalescer bag can be washed in general purpose fabric
detergent and water in a washing machine.
AIR CONDITIONING - COOLING - WATER SEPARATOR
EFFECTIVITY
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AIR CONDITIONING - COOLING - WATER SEPARATOR
AIR CONDITIONING - COOLING - WATER SEPARATOR
EFFECTIVITY
GUN 101-118 21-50-00
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Purpose
The water spray injector adds water into the ram air system.
This increases the efficiency of the heat exchangers.
Location
The water spray injectors are in the air conditioning
compartment. They attach to the inboard wall of the ram air
inlet duct, outboard and forward of the heat exchangers.
Physical Description
The water spray injector is a T-fitting with three threaded ends.
There are two water spray injectors, one for each pack system.
Functional Description
The air from the turbine section of the ACM supplies air flow
through the water spray nozzle. Water from the water separator
flows perpendicular to the air flow at a venturi. This causes
suction of water into the airstream. When the water and air mix,
the force breaks the water into microscopic droplets (atomize).
The atomized mixture flows into the ram air duct upstream of
the heat exchanger.
AIR CONDITIONING - COOLING - WATER SPRAY INJECTOR
EFFECTIVITY
GUN 101-118 21-50-00
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D633A101-GUN Oct 10/2006
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
21-50-00-017
AIR CONDITIONING - COOLING - WATER SPRAY INJECTOR
AIR CONDITIONING - COOLING - WATER SPRAY INJECTOR
EFFECTIVITY
GUN 101-118 21-50-00
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21-50-00-017
Purpose
The low limit (35F) temperature sensor sends temperature
information to the low limit (35F) controller.
Location
The low limit (35F) temperature sensor is in the air conditioning
compartment. It is in the forward lower section of the water
separator.
Physical Description
The low limit (35F) temperature sensor has these features:
* Probe body
* Electrical connector.
Training Information Point
Use two wrenches to remove or install the low limit (35F)
temperature sensor. This will prevent damage to the water
separator.
AIR CONDITIONING - COOLING - LOW LIMIT (35F) TEMPERATURE SENSOR
EFFECTIVITY
GUN 101-118 21-50-00
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D633A101-GUN Oct 10/2006
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21-50-00-012
AIR CONDITIONING - COOLING - LOW LIMIT (35F) TEMPERATURE SENSOR
AIR CONDITIONING - COOLING - LOW LIMIT (35F) TEMPERATURE SENSOR
EFFECTIVITY
GUN 101-118 21-50-00
Page 49
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Purpose
The low limit (35F) controller controls the low limit (35F) valve.
Location
The low limit (35F) controller is on the outboard beam of the air
conditioning compartment.
There is one controller for each pack system.
Physical Description
The low limit (35F) controller has a cover and chassis assembly.
The chassis assembly contains the printed wiring boards for
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