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29 Cards in this Set
- Front
- Back
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how many volts is the starting system on the c-17?
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24 vdc.
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what is the refrigerant capacity of the c-17?
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125 lbs.
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how many btu/hr does the c-17 provide?
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300,000 btu/hr.
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what is the airflow pressure of the c-17?
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150 lb/min at 2 psig.
75 lb/min at 4 psig. |
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engine idle speed?
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550-600 rpm.
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normal operating rpm's?
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1750 rpm.
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clutch cut-in rpm's?
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700 rpm or lower.
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operating time per full tank of fuel?
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8 hours of full cooling capacity at 1750 rpm's.
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at what pressures do the high and low cutout switches disengage?
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high: 365 psi
low: 20 psi |
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low compressor oil cutout switch cuts out and cuts un at what pressures?
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cut out: 15 psi
cut in: 20 psi "manual reset has 120 sec time delay". |
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what is the receiver's releif valve set at?
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450 psi.
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what is the melting point of the receiver's fusible metal plug?
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212 degrees F
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the c-17 is designed for operation in temperatures in what range?
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0-110 degrees F.
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what is the delivery air temp of the c-17?
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40-50 degrees F.
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what is the maximum rpm's the speed control governor will allow?
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2300 rpm's.
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what is the purpose of the precooler coil?
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to lower or dehumidify the conditioned air temperature to a dew point of 40 degrees F.
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which compressor is equiped with an oil cooler?
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carrier.
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what is the definition of dew point?
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the temperature at which condensation takes place.
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at what rpm will overspeed switch S9 close?
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2300 RPM.
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what is the designation for the engine shutdown solenoid?
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L6
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what relay engages the clutch once the unit the selector switch is placed in air conditioning/pump down mode?
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K3 (master relay)
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when the selector switch is placed in air conditioning mode, what relay opens the solenoid valves?
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K2.
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how many solenoid valves are energized when the unit is placed in air conditioning mode?
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4. (L1, L2, L3, L4).
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which solenoid supplies the precooler coil with refrigerant when the unit is placed in air conditioing mode?
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L3.
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WHICH SOLENOID SUPPLIES THE HOT GAS BYPASS VALVE WITH REFRIGERANT WHE THE UNIT IS PLACED IN AIR CONDITIONING MODE?
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L4.
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which 2 solenoid valves supply refrigerant to the aftercooler coils?
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L1 and L2.
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which 2 solenoid valves are closed when the unit is placed in dehumid mode?
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L1 and L2.
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a float switch (S5) in the reserve tank closes when the fuel remaining drops to ____.
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one hour.
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moving the selector switch to pump down deactivates which relay?
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K2 (pump down relay) which deenergizes all 4 solenoids.
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