APC ACRA100 Installation Manual download pdf (Page 13)

5Pumped Refrigerant System Operation and Maintenance

Mechanical Inspection Checklist

The mechanical inspection verifies that all mechanical components and connections are secure and tight

and ready for start-up and system charging.

Note: Improperly installed piping may result in improper operation and possible damage to

the cooling unit or surrounding equipment.

Ensure that the:

Chilled water pipe fittings are tight, and have been leak checked. Leak check pressure can not exceed 300 psi

(2068 kpa).

Air is bled from the water system. If air remains in the system, bleed it out now.

Mechanical connections are tight.

Supply chilled water temperature is recorded.

Chilled water flow is correct based on the performance requirements of the RDU.

Field-installed traps and piping are in accordance with the installation manual. Strainers are in place in the

chilled water supply loop. Proper piping practices have been followed.

Piping is adequately supported and isolated when necessary.

Field-installed service valves are open.

Water outlet temperature sensor is positioned correctly. See the installation manual for correct positioning.

Piping in the building and on the roof is properly insulated.

Pumped refrigerant piping joints are tight, and have been leak checked. Leak check pressure can not exceed

150 psi (1034 kpa).

Pressure relief valve is installed in accordance with the installation manual as well as local and national codes

and regulations.

Refrigerant lines have been evacuated to ensure foreign particles have been removed from the system.

Evacuation level must be at a minimum 500 microns for 2 hours.

All piping (chilled water and refrigerant vapor) is properly insulated.

Covers and guards are in place.

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APC ACRA100 Installation Manual Page 13