MIL-PRF-53047B
3.3.5.1 Batteries. On board batteries shall be maintenance free and shall provide 24 VDC for
the electrical system. Batteries shall be securely held in place by removable locking devices, and
shall be protected against engine and exhaust heat. Adequate room shall be provided for battery
maintenance and testing. The battery space shall be ventilated and treated against acid fumes and
spillage. The battery terminals shall be provided with non-conductive guards or covers to prevent
accidental shorting.
3.3.5.2 Slave start capability. The water chiller shall have a receptacle installed that will allow
starting through the use of a standard NATO STANAG No. 4074 slave connector in accordance
with MIL-PRF-62122. The slave receptacle shall be integrated into the engine starting system in
a manner that will not interfere with starting procedures.
3.3.6 Operational control panel. A control panel shall be provided containing the following
fault indicators: engine, pump, and compressor controls and metering, as required. The control
panel components shall be enclosed to protect electrical connections and panel components, but
the indicators and controls shall be visible and operable at all times. Electrical connections
between the control panel and the electrical system shall be such that enclosure integrity is not
compromised.
3.3.7 Water control panel. An input and output water control panel shall be located adjacent
to the operational control panel. The unit shall be provided with an input connection to accept
water from the external potable storage facility and two output connections, one to dispense the
chilled water, and the other to recirculate it through the external storage facility. The connections
for the input and the recirculation output shall be class 1, male coupling halves, 3/4 inch nominal
size, conforming to ASTM F 1122. The output connection, at the panel, shall be a class 1, female
coupling, 3/4 inch nominal size, conforming to ASTM F 1122. The connections shall be
protected against contamination, with captivated closures, when not in use. Interconnecting lines
for potable water input from and recirculation to the source, and for dispensing through the
nozzle shall be provided by three of the ancillary hose assemblies (see 3.3.8.3).
3.3.8 Interface items. Each water chiller shall be provided with the items listed in these
subordinate paragraphs (see figure 2), for interface to fielded systems. All items shall be suitable
for use with potable water, and shall be guarded against contamination when not in use.
3.3.8.1 Nozzle. A 1-inch size, dispensing nozzle, matching the performance characteristics
specified 3.4.2 and 3.5, shall be provided. The nozzle shall be furnished with a built-in check
valve or other device, to minimize spillage on cessation of operation, and shall incorporate a
spring loaded packing or other means, to preclude adjustment. The nozzle shall be fitted with a
removable spout, provided with a captivated closure. It shall be provided with a class 1, female,
3/4 inch nominal size, cam-locking, quick-disconnect coupling half conforming to ASTM F 1122;
with a captivated, class 1, 3/4 inch nominal size, cam-locking plug conforming to ASTM F 1122.
3.3.8.2 Strainer. An in-line sediment strainer assembly shall be provided for use in the water
input line. The strainer shall trap water borne particles, down to a size that can be handled by the
water chiller to ensure potability. The strainer shall be provided with class 1, female, 3/4 inch
nominal size, cam-locking coupling halves conforming to ASTM F 1122, or ASTM F 1122, on
both ends, fitted with captivated, class 1, 3/4 inch nominal size, cam-locking plugs conforming to
ASTM F 1122.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business