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|  MIL-C-24196A(SH)
stainless steel. The heater shall raise the temperature of the full cleaning
tank from 60 to 180 degrees Fahrenheit (F) within 120 minutes.
3.4.5.3.1 Safety thermostat. A safety thermostat shall be furnished in
the heater tank (well mounted) and shall operate at 185
5F (see 3.2).
3.4.5.4 Operating thermostat. An operating thermostat and a stainless
steel sensing bulb shall be mounted in the recirculating solution piping. The
thermostat adjusting knob shall be readily accessible to the-operator and shall
operate from at least 50 to not less than 200F.
3.4.5.4.1 Temperature controller. When specified (see 6.2.1), a solid
state time-proportioning temperature controller shall be provided to control
the temperature of the cleaning solution. The controller shall be in accord-
ance with MIL-E-16400 and MIL-E-917 and shall maintain the cleaning solution
temperature to within plus or minus 2F from the set point. Means to set the
temperature between 50 and 200F and a temperature deviation indicator shall be
readily accessible to the operator. The temperature sensor shall be of the
Resistive Temperature Detector (RTD) type with a positive temperature coef-
ficient, or a thermocouple.
3.4.5.5 Faucet and spray rinse. A swivel-type of faucet constructed for
bulkhead mounting shall be provided. Hot and cold, potable water shall be
piped to the faucet assemble by the installing facility.
3.4.5.5.1 Spray equipment. A pressurized spray rinse system shall be
provided consisting of an airwater spray gun with flexible hoses located for
use in the rinse tank. The pressurized rinse shall be sourced by hot water
(130F, 50 pounds per square inch
operating pressure, 150
test
The proportion of air
pressure and, compressed clean filtered air, 100
and water shall be adjustable from all water and no air to no water and all air.
3.4.5.5.2 Plumbing connections. A stainless steel plate shall be provided
that shall mount on the bulkhead. It shall support and accommodate the faucet's
hot and cold water valves, the spray gun assembly and the air and water connections.
The plumbing shall include bottom entry of hot and cold fresh water through a
1/2 inch brass tailpiece 12-inches long conforming to MIL-T-20168. The source
of compressed air shall be through a l/4-inch copper tailpiece 12 inches long
conforming to MIL-T-24107. Stainless steel drain valves that shall drain tanks
in less than 5 minutes shall be provided. Valve operation shall be convenient
to the operator. Tank and system drains shall be flexible connections employing
high temperature chemical resistant hose for sound isolation.
3.4.5.6 Interconnecting piping. Interconnecting piping and fittings
between pump, filter, heater and cleaning tank shall be of 316L stainless steel,
seamless type (see 3.3.1). Valves not in contact with cleaning solution shall
be of valve bronze. When in contact with cleaning solution, piping shall be 316L
stainless steel, seamless type. When required, a 3-inch long (maximum) hose
coupling may be utilized for connecting the tanks to the recirculating system
for sound isolation purposes.
3.4.5.7 Strainer. A 316L stainless steel strainer accessible for servicing
shall be installed in the system before the inlet of the pump to protect
against large impurities.
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