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|  MIL-T-81527B(AS)
3.4.1.6.7.7 Contents of Unit. The Liquid Cooling System shall consist of
the following:
3.4.1.6.7.7.1 Pump Motor Assembly.
There shall be a motor-pump as-
sembly capable of circulating the coolant as specified in 3.4.1.6.7.6. There
shall be a fan either as part of this Assembly or driven by separate motor
to circulate ambient air through the unit when the Liquid-to-Air Heat Exchanger
is in use.
The air flow shall be sufficient to meet performance specified
in 3.4.1.6.7.6 under conditions as specified in section 3.4.1.6.7.7.2.
3.4.1.6.7.7.2
Liquid -to-Air Heat Exchanger. This Exchanger shall be
capable of heat transfer as specified in 3.4.1.6.7.6 with ambient air tem-
perature and altitude profile as follows:
0
0
(a) 40 C (104 F) from sea level to 8000 feet.
(b) Linear decrease from 40C (104F) at 8000 feet to 35C (94F)
at 10, 000 feet.
3.4.1.6.7.3 Liquid-to-Sea Water Heat Exchanger. This Exchanger shall
be capable of heat transfer specified in 3.4.1.6.7.6 with sea water available
A replaceable zinc anode plug shall be provided
as specified in 3.4.1.6.7.4.
on the sea water side.
3.4.1.6.7.7.4 Reservoir. A 2.5 gallon minimum capacity reservoir shall
The relief valve shall be in the
be provided with sight glass and relief valve.
supply pressure line and shall limit the liquid coolant delivered to the
AN/APG-59 Radar Set to a maximum pressure of 225 psig. The sight glass
shall be graduated with at least 1/4, 1/2, 3/4, and FULL markings.
3.4.1.6.7.7.5 Control Panel. A recessed control panel shall be provided
The panel shall mount all necessary ex-
on the top surface of the enclosure.
ternal connections, consisting of coolant quick-disconnect couplings, reser-
voir filler with cap, sea water fittings, and an electrical power receptacle.
A selector value and an ELASPED TIME indicator conforming to MS 17321-2
shall also be provided on this panel.
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