MIL-T-13291 Tank, Hot-Dip, Directly And Indirectly Heated

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MIL-T-13291F

3.6.13 Junction box. Unless otherwise specified (see 6.2.1), the hot-dip

tank shall be provided with a junction box to permit connection with electric

power supply.

3.6.14 Extension cord and plug. When specified (see 6.2.1), portable dip

tanks shall be equipped with a 25-foot rubber covered cord with twist lock

NEMA standard male plug attached to one end.

3.6.15 Pump. When specified (see 6.2.1), a pump shall be furnished with

the tank. The pump shall be electric motor driven and capable of circulating

the contents of the dip compartment in not more than 10 minutes for tank

capacities not greater than 50 gallons. For the tank capacity greater than 50

gallons, the pump output shall be not less than 5 gallons per minute. The

pump shall be readily accessible for servicing and replacement and shall not

obstruct the work area inside or outside the dip compartment.

3.6. 15.1 Pump motor. The pump motor shall be totally enclosed, continuous

duty, and conform to the requirements of CC-M-1807, with ball bearings. A

thermostatic switch shall be installed in the motor circuit to prevent current

flow to the motor before the dip material has melted.

3.6. 15.2 Filter. When specified (see 6.2.1), a cleanable type filter shall

be provided in the circulating system having 50, 100 or 200 micron filtering

capabilities as specified.

3.6.16 Casters. When specified (see 6.2.1), the tank shall be mounted on

four, 4-inch or larger diameter steel casters, two swivel type and two rigid

The casters shall be rated for not less than 50 percent greater than

type.

the gross weight of the tank and contents.

3.6.17 Optional equipment. The following optional equipment shall be fur-

nished and shall be fully described (see 6.2.1).

Ventilation hood

Bottom drain (quick opening type)

Automatic fire extinguishing system

Power operated cover

3.6.18 Instruction and information plates. Each tank shall be equipped

with instruction plates, including warning and cautions, suitably located

describing any special or important procedures to be followed in operating and

servicing the equipment, including instructions for satisfactory operation of

all the tank controls.

3.6.18.1 Marking on plates, charts, and decals. All words on plates,

Characters shall be

charts, and decals shall be in the English language.

engraved, etched, embossed, or stamped in boldface on a contrasting back-

ground.

When these methods are not practical, the instructions shall be

applied directly onto the item by environmentally protected decalcomania

transfer, metal wraparound tag, stencil, silk screen, or by any other method

suitable for the use intended which shall be as permanent as the normal life

expectancy of the item to which it is applied and capable of withstanding the

environmental test and cleaning procedures specified for the item.