TM 10-5410-228-24
Reference
Designator
Function
CV1
These check valves prevent reverse hydraulic flow when the opposite pump is utilized.
CV2
CV3
These check valves prevent hydraulic fluid from being introduced into the air conditioning
CV4
circuit backwards during periods when the air conditioner is not being used.
This flow control cartridge is used to limit the hydraulic pump output flow to approximately
FP1
6.5 gpm which is 1/2 the normal flow. This permits the components to operate at 1/2 normal
speed.
This flow control dictates the non-NBC mode speed of the NBC fan. It is set to permit the
FP2
NBC fan to operate at approximately 1/2 normal speed.
FP3 is a hydraulic flow divider used to limit the total flow to the recirculation fan. It is
FP3
nonadjustable.
The speed of the air beam inflation fan is controlled by the adjustment of this flow control.
FP5
Some portion of the hydraulic fluid is allowed to bypass around the rib fan motor to prevent
over speeding.
This flow control shunts hydraulic fluid around the FP3 flow divider to achieve a controlled
FP6
speed of the recirculation fan. Adjustment of the flow is performed to achieve a normal
operation of the recirculation fan at 1,850 rpm.
M1A
This is the motor for cooling compressor.
M1C
This is the motor for condenser fan.
M2
This is the motor for recirculation fan.
M3
This is the motor for NBC fan.
M4
This is the motor for rib fan.
This is a mechanical valve that, when closed, prevents hydraulic flow to the condenser
PD1
motor, M1C.
The total system pressure is protected by this pressure relief valve which is presently set at
RD1
approximately 3,200 psig.
The amount of heat available for the system is controlled by this relief valve. High
RD2
hydraulic fluid pressure is turned into heat as it passes across the relief valve. It is set at
2,600 psig.
This pressure relief valve reduces pressure spikes in the system when rib fan motor shuts
RD3
down. This eliminates over pressurizing the recirculation fan motor. It is set at
approximately 3,000 psig.
This is a differential pressure sensing device. When differential pressure across this device
SL1
exceeds 3.0 psi, it causes mechanical valve PD1 to close. This differential pressure occurs
when solenoid SV4 is energized (opened) and hydraulic fluid flows through compressor
motor M1A, and on through condenser motor M1C.
SV1
These solenoids control fluid flow to remainder of hydraulic circuit. SV1 is used for
SV2
MOBILE mode, and SV2 is used for all other modes.
On/Off operation of air conditioning compressor is controlled by this solenoid. Selection of
SV4
the COOL mode energizes or opens this solenoid to introduce fluid to air conditioning
compressor and condenser fan motors.
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