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|  MIL-T-81527B(AS)
A switch shall be provided, inter-
3.4.1.6.6.10.2 Reservoir Level Switch.
locking the pump motor circuit, to monitor the fluid level within the Reser-
voir and the attitude of the Hydraulic Supply. The switch shall open and
interrupt one pump motor circuit to protect the pump from running without
any fluid at any combination of level and inclination.
3.4.1.6.6.10.3 Pressure Switch. A normally open switch shall be located
in the pressure line and shall close on a rising pressure at 950 + 20 psig.
It shall open on decreasing pressure at 865 + 55 psig. The pressure switch
closing shall cause the FAULT-PRESS indicator to be lit.
3.4.1.6.6.10.4 Accumulator Pressure Switch. A pressure switch connected
to the accumulator shall prevent the unit from starting, but cause illumina-
tion of a fault indicator, if the static nitrogen pressure in the accumulator
drops below 450 +0, -50 psig.
3.4.1.6.6.11 Connections.
A primary power input receptacle per
3.4.1.6.6.11.1 Electrical.
MS3102R28-19P shall be provided on the Control Pane1. Connection shall be
.
made from the Power Contro1 Panel.
Two Hydraulic connections shall be located on
3.4. 1.6.6.11.2 Hydraulic.
the control panel and shall be quick discount types. The pressure SUPPLY
coupling and the RETURN line coupling shall mate with the hoses.
3.4.1.6.6.12 Hoses.
Two medium-pressure hydraulic hoses, not exceed-
ing 67 inches in length, shall be provided to connect the Hydraulic Power
Supply to the Antenna or the Transfer Valve Assembly of the Antenna
Maintenance Fixture. Both hoses shall be equipped with quick-disconnect
connectors and shall be constructed with an extruded Teflon resin liner and
corrosion resistant wire braid.
3.4.1.6.7 Liquid Cooling System.
The Liquid Cooling System shall provide OS25
3.4. 1.6.7.1 Function.
The system shall pump, cool, and
liquid coolant to the AN/APG-59.
regulate coolant fluid. and shall operate as either a liquid-to-air or liquid-
to-sea water heat exchanger.
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