Motors

Page Title: Motors
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MIL-W-43001F

3.4.5 Motors. motors shall be continuous, drip proof, splash proof, or

totally enclosed type for operation in a 40C ambient temperature. All motors

shall conform to the requirements of CC-M-1807 and to the following:

(a) All motors shall have windings impregnated to resist moisture.

(b) Each motor shall have the proper starting characteristics, ample

power, and adequate thermal dissipation capacity to comply with the requirements

specified herein, with a reasonable factor of safety, commensurate with the

application and expected duty cycle to which each motor might be subjected under

normal operating conditions.

motors of 1/2 horsepower or less when used for horizontal applications may have

sleeve bearings.

(d) Motor bearings shall be of the permanently lubricated type or shall

have adequate and accessible means for lubrication.

(e) Each motor of 1/8 horsepower rating or larger shall be provided with

manually reset thermal-overload protection Incorporated as a part of the motor

or installed in the controller.

3.5 Design and construction. Materials specified hereinafter as corrosion-

resistant metals shall conform to 3.4.1. The washer-extractors shall be

furnished with an automatic cycle control (see 3.5.1.4) and shall be furnished

complete with all motors, driving mechanisms, starters, controllers, master

switches, timers, reversing mechanisms, and all other electrical equipment and

accessories for the automatic operation of the washer-extractor as specified

herein. These controls shall also allow for the manual operation of the

machine. When specified (see 6.2), noise levels shall not exceed limits

specified in MIL-STD-1474 and shall not exceed 85 decibels A weighted at the

normal operation position (see 4.6.4). The washer-extractor shall have a low

extraction speed and a high extraction speed except for the 25-, 50-, and

100-pound sizes which shall have one extraction speed only. An intermediate

load positioning cycle (approximately double the RPM of the washing cycle) will

be acceptable for the 200-pound size. Each machine shall be equipped with a

provision allowing for the manual addition of soap or other chemicals. When

operated without garments as specified in 4.6.1, the machine shall meet the

following operational requirements.

(a) The assembly of components shall have complete and proper inter-

relationship.

(b) Starting, stopping, and control devices shall operate smoothly and

positively.

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