A-A-50047 Dry Cleaning Unit Assembly, Dry To Dry, Perchloroethylene Solvent

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A-A-50047A

Controls:

C – Card reader

M – Microprocessor

Filtration system:

C – Cartridge filter

S – Spin Disc, non-powdered

1.2 CID based part identification number (PIN). A document based PIN to identify size, controls, and filtration systems is included in section 5. This identification numbering procedure is for Government purposes and does not constitute a requirement for the contractor.

2. SALIENT CHARACTERISTICS.

2.1 Design and construction. The dry cleaning unit shall use perchloro-ethylene (PERC) as the cleaning solvent. The unit shall consist of a loading door, basket/drum, solvent tanks, still, filtration system, refrigeration system, water separator, button trap, condenser, lint trap/filter, control panel, operation/maintenance manual(s), and an in-line solvent cooling system. Perchloroethylene emissions of the dry cleaning unit shall be no more than 25 parts per million as established by the International Fabricare Institute (IFI) and meet or exceed all Environmental Protection Agency (EPA) and Occupational Safety & Health Administration (OSHA) requirements. The dry cleaning unit shall be Factory Mutual approved. All metal components of the loading door, basket/drum, solvent tanks, still, filtration system, water separator, button trap, condenser, lint filter/trap, and in-line solvent cooling system shall be made of AISI type 304, 316, or 316L stainless steel.

2.1.1 Loading door. The loading door shall be equipped with a handle and glass port. The door shall be not less than 16 inches in diameter. The glass port shall be not less than 6 inches in diameter.

2.1.2 Basket/drum. For sizes 25 through 35, the basket shall rotate a minimum of 38 rpm during the wash cycle and rotate a minimum of 380 rpm during the extract cycle. For sizes 40 through 55, the basket shall rotate a minimum of 32 rpm during the wash cycle and rotate no less than an average of 335 rpm during the extract cycle. For sizes 60 through 100, the basket shall rotate a minimum of 32 rpm during the wash cycle and rotate a minimum 170 rpm during the low speed extract cycle and rotate a minimum 340 rpm during the high speed extract cycle. The dry cleaning unit shall have automatic reversing action during the wash cycle. The basket/drum volume and cylinder diameter shall have the following minimum characteristics: