Refrigeration Units, Gas Engine and Electric Motor Driven

TM 746-10

e. Shroud the complete unit, except tanks, with

4-25. Clothing, Textile, and Shoe Repair Shops

polyethylene film and secure in place with tape.

a. Preserve generator, electric motors, trailer

chassis, and handtools per applicable paragraphs of this

4-22. Refrigeration Units, Gas Engine and Electric

chapter.

Motor-driven

b. Coat all unprotected metal surfaces and moving

a. Refrigerant

compressor.

Operate

the

parts of machine heads with P-10. Shroud each head

compressor simultaneously with the preservation of the

with greaseproof barrier material and secure with tape.

engine (or run electric motor for sufficient length of time)

Remove lights and thread stands and individually pack

to ensure coverage of all internal surfaces with oil.

in fiberboard boxes. Secure packs to the appropriate

Attach a tag to the compressor containing the

machine stand from which removed.

information: "COMPRESSOR CRANKCASE FILLED

c. Secure removable pulley belts to the

WITH OPERATING OIL."

appropriate machinery with tape.

b. Refrigerant system, condenser, and receivers.

Pump down the refrigerant system and close the valves.

4-26. Cargo Sets

Do not apply preservative oil to the internal surfaces of

a. Handtools will be preserved and packed per

the refrigerant condensers and receivers. Attach a tag

paragraph 4-2.

to the compressor or operating controls containing the

b. Coat unpainted or unprotected surfaces of

following information:

"OPEN VALVES BEFORE

hooks slings, shackles, clamps, vises, spreaders, wire

OPERATING THE COMPRESSOR."

rope, etc., with P-1.

c. Gasoline engine and electric motor. Preserve

c. Place component items of cargo sets and

engines and electric motors per paragraph 3-3.

secure within the chest provided. The chest will not

4-23. Air Conditioners

require overpacking.

a. Refrigerant system. When pump down means

4-27. Insecticide Sprayers

are provided, pump down the refrigerant system leaving

a. Thoroughly flush lines, pumps, hoses, and

the low-pressure side of the system with a positive,

insecticide containers with fresh water and dry with dry

pressure-holding charge. Attach a tag to the electrical

compressed air.

power connection or the starting system containing the

b. Preserve engines, pumps, and tanks per

following information:

"OPEN VALVE BEFORE

paragraph 3-3.

EQUIPMENT IS OPERATED." Do not apply

preservatives to the refrigerant system, piping, or

c. Coil hoses and secure with tape. Secure hoses

valves.

on reels to prevent the hose from unwinding.

b. Power supply cable. Coil and secure power

d. Coat unpainted, unprotected, ferrous metal

supply cable by tying or taping.

surfaces with P-1.

c. Air ducts. Wrap air ducts individually with

greaseproof barrier material and secure with tape.

4-28. Gas Generating and Charging Plants:

Place air ducts in compartments provided or secure to

Acetylene,

Carbon-dioxide,

Oxygen-nitrogen,

trailer. Place the canvas cover over the air conditioner.

Semitrailer-mounted. Cleaning and drying will be per

d. Gasoline engine, electric motor, and trailer

paragraphs 3-3 and 3-4 and as specified in MIL-C-

chassis. Preserve engines, motors, and chassis per

52211.

paragraph 3-3.

a. Vent openings. Seal vent openings on trailer

roof with waterproof barrier material and secure with

4-24. Welding Equipment

plastic tape.

a. Preserve the engine or electric motor per

b. Compressors.

Operate acetylene and air

paragraph 3-3.

compressors for sufficient length of time to ensure that

b. Seal all openings that will permit entry of water

all interior surfaces are coated with lubricant.

with tape.

c. Personnel heaters. Remove igniter plugs and

c. Coat unpainted, unprotected, ferrous metal

fog combustion chamber with P-10.

surfaces of set components with P-10 and cover or wrap

d. Charging lines. Pack in fiberboard boxes.

with greaseproof barrier material. Pack component

e. Refrigeration system.

Pump down the

items not requiring a contact preservative method III in

refrigerant system, leaving the low-pressure side of the

fiberboard boxes.

system with a positive, pressure-holding charge.

4-5