MIL-DTL-23554E(SH)
3.4.18.1 Motor. Motor shall be two speed and conform to the following requirements:
Voltage:
440 volts, 3-phase, 60 hertz (Hz).
Type:
Squirrel cage induction.
Ambient temperature:
40 °C.
Duty:
Wash: Reversing, intermittent, 3 reversals (minimum) per minute (see 3.4.13).
Extract: 10 minute full load operation followed by 10 minute rest.
Bearings:
Ball.
3.4.18.2 Controls. Motor controllers shall be of the low voltage protection type. Electrical components
mounted outside the control panel shall be provided with drip proof enclosures.
3.4.18.3 Wiring methods and practices. Terminal blocks shall be plainly marked to correspond to the markings
on the electrical diagram. Wires run in conduit or harness assemblies shall be marked to correspond with the
electrical diagram.
3.4.19 Safety features. Exposed belts, shafts, pulleys, and other moving parts shall be fully enclosed by metal
guards. Metal guards shall be firmly supported but readily removable for maintenance.
3.4.19.1 Door interlock. An electric interlock shall be provided to prevent the shell door from opening until the
cylinder is at rest following cycle completion and to prevent rotation of cylinder until the shell door is latched
closed.
3.4.19.2 Emergency stop. An emergency stop button shall be provided in a readily accessible location on the
remote control box for immediately stopping the washer-extractor. The configuration, color, and labeling of the
emergency stop button shall be in accordance with the manufacturer's standard commercial practice.
3.5 Performance. The washer-extractor shall meet the performance requirements in 3.5.1 through 3.5.6.
3.5.1 Inclined operation. When tested as specified in 4.2.3, the washer-extractor shall operate up to and
including 30 degrees of inclination without a reduction in performance, spillage shall not exceed a total of one
gallon during washer-extractor operation, and spillage shall not cause damage to electrical parts.
3.5.2 Vibration. The washer-extractor shall operate normally and perform its functions both during and after
the tests specified in 4.2.4.
3.5.3 Airborne noise and structureborne vibration. The washer-extractor airborne noise shall be not greater than
the airborne noise acceptance criteria specified in table II. Unless otherwise specified, the washer-extractor
structureborne vibratory acceleration shall be not greater than the acceptance criteria specified on figure 2 of MIL-
STD-740-2 for Type III equipment. For washer-extractors that are solidly mounted or Distributed Isolation
Material (DIM) mounted shipboard (see 6.2), the 20 dB correction factor specified in the notes on figure 2 of MIL-
STD-740-2 shall be subtracted from the Type III curve and the resulting values used as the structureborne vibratory
acceleration acceptance criteria.
3.5.4 Extraction efficiency. Water retention following completion of a full wash cycle shall be not greater than
80 percent of the normal dry weight (for instance 16 pounds of test cloths saturated and extracted shall weigh no
more than 28.8 pounds) when tested as specified in 4.2.6.
3.5.5 Shock (Type I only). Washer-extractor and remote control box shall meet the Grade B shock
requirements of MIL-S-901 when tested as specified in 4.2.8 (see 6.2).
3.5.6 Finished painted surface requirements. Painted surfaces shall be meet the requirements specified in
3.5.6.1 through 3.5.6.3.
3.5.6.1 Hardness requirements. Pencil hardness of painted surfaces shall be greater than 2H when tested as
specified in 4.2.9.1.
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