A-A-50455 Portable Filtration CartThis commercial item description covers the requirements for 10, 16, and 25 gallons per minute gpm 37.8, 60.48, and 94.5 liters per minute lpm rated flow capacity filtration carts used in transferring petroleum based, synthetic hydrocarbon, triaryl phosphate ester and polyglycol solution or aqueous hydraulic fluids into ship hydraulic systems, as well as cleaning the ships hydraulic systems that are contaminated with particulate, water, or both. It shall recirculate fluid in a contaminated system until cleanliness levels are attained which provide satisfactory component performance.

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A-A-50455A

2.12 Protective devices.

2.12.1 Pump suction shall be protected with a 100 mesh inline strainer or separator that can be serviced without breaking lines and draining fluid from the unit.

2.12.2 Guards shall be provided for powered moving parts to prevent contact by operators.

2.12.3 The unit shall be equipped with an electric motor overload protection feature, which will automatically stop the motor under an overload condition.

2.12.4 The unit shall be equipped with an overpressure protection feature to limit maximum system pressure so as not to damage components or piping. The maximum system pressure is the maximum pressure that the unit can experience under any abnormal condition, to include inadvertent closure of downstream valves; but shall not exceed

250 psi (1.724 Mpa).

2.13 Identification and markings.

2.13.1 The direction of flow through the filter shall be clearly marked on filter housing.

2.13.2 The following acquisition information shall be permanently identified on the unit:

a. CID based part number (see 6.2). b. Manufacturer's name.

c. Manufacturer's part number. d. Manufacturer's CAGE code.

2.13.3 Appropriate warning plates shall be conspicuously located where hazards exist.

2.13.3.1 A warning plate providing caution against the use of water removal filter elements in water-glycol systems shall be provided as follows:

"WARNING: DO NOT USE WATER REMOVAL FILTER ELEMENTS FOR FILTRATION OF POLYGLYCOL SOLUTION OR AQUEOUS HYDRAULIC FLUID."

2.13.3.2 When specified by the purchaser in the ordering data, a warning plate providing caution against use of filter cart(s) in Class I, Division 1 hazardous spaces shall be provided as follows:

"WARNING: THIS CART IS NOT INTENDED FOR USE IN OPERATIONAL CLASS I, DIVISION 1

HAZARDOUS SPACES AS DEFINED BY THE NATIONAL ELECTRICAL CODE (NFPA 70), ARTICLE

500."

2.13.4 Instruction plates shall be installed showing the assembly of the filter elements, using the element connectors within the filter bowl.

2.14 Identification of standard parts . O-ring seals shall be identified by SAE standard part numbers, which reflect the required material and limit sizes to standard sizes. All fasteners shall be identified by SAE standard part numbers, which identify both size and material.

2.15 Paint. The unit shall be painted with an epoxy paint.

2.16 Manuals . Standard commercial manuals including operating, service, maintenance instruction, and a parts list shall be furnished with each unit.

2.17 Human engineering. The cart shall be designed and arranged for efficient use; human engineering principles described in ASTM F1166 shall be considered. The cart shall be designed for operation by a 5th percentile female through a 95th percentile male. In particular, controls shall be arranged for normal operation of a vertical cart by standing personnel, and for occasional operation of a horizontal cart by squatting personnel.

2.17.1 Pushbuttons and switches shall be protected from inadvertent operation, and damage during transit, by raised bezels or equivalent protection devices.