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|  MIL-C-81952B(AS)
3,3.2 Organizational level functional requirements.
Not applicable.
3.3.3 Intermediate level functional requirements.
Applicable.
3.3.4 Warm-up time.
Applicable.
3.4 Detailed functional requirements.
3.4.1 Coolant circulation loop. Reservoir-stored coolant shall be
filtered and then pumped to the chiller for heat exchange with the chilled
water. Temperature and pressure gages shall provide for monitoring of
output coolant pressures and temperature. A bleed valve shall be provided
at the high point and a drain valve shall be provided at the low point.
3.4.2 Particulate filter. A full-flow, depth type disposable filter
shall be located in the coolant supply line. The filter shall have an
electrical differential pressure indicator to provide an indication of
excessive dirt accumulation and provide automatic shut-off of the LC.
3.4.3 Reconditioning filtration, The LC shall continuously circulate
the coolant at a rate of 1 to 3 gpm through a reconditioning filtration
loop consisting of the following:
a.
Orifice - to limit pressure and flow
b.
Refining pack filter - Luber-finer Part No. 3132 or equivalent
c.
Desiccant filter - Luber-finer Part No. 4493 or equivalent
3.4.4 Coolant reservoir.
The coolant reservoir of the LC shall be
capable of the following:
a.
Volumetric coolant
2.7 cubic feet minimum
capacity
(20 gallons nominal)
b.
Nitrogen pres-
15 psig nominal from nitrogen
surization
cylinder specified in 3,6,7
c.
Safety relief valve
15 psig maximum
setting
Proof pressure of
d.
20 psig maximum
reservoir
e.
Burst pressure
40 psig minimum
3.4.5 Controls and indicators. Controls and indicators shall be provided
at the cooling stand. The controls and indicators shall provide monitoring
and control of the LC functions.
3.5 Workmanship,
Applicable.
3.6 LC elements.
The LC shall contain the following elements.
3.6.1 Pumping unit-hydraulic. The pumping unit shall deliver reservoir
stored coolant to the chiller and then to the test stations via the utility
coolant lines. The pumping unit motor shall operate from 220/440 Vat, 3-
phase, 60 Hz power.
-8-
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