53Pumped Refrigerant System Operation and Maintenance
Mechanical
q Which refrigerant pump is operating? __________________________
– Pump 1 run hours: _______________________________
– Pump 2 run hours: _______________________________
q Record the refrigerant pump operating information.
– Pressure: _______________________________
– Speed: _________________________________
q Record the inlet and outlet temperatures for the heat exchanger.
– Inlet temperature: ________________________
– Outlet temperature: _______________________
Electrical
q Inspect the electrical panel for tight connections and for overheated connections from loose contact
terminals.
q Confirm the incoming main voltage matches the equipment nameplate. The measurement should be within
10% of the nameplate listing.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Turn off all power supplying this equipment before working on the equipment. All electrical
work should be performed by licensed electricians. Practice lockout/tagout procedures.
Do not wear jewelry when working with electrical equipment.
Failure to follow these instructions can result in death or serious injury.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Turn off all power supplying this equipment before working on the equipment. All electrical
work should be performed by licensed electricians. Practice lockout/tagout procedures.
Do not wear jewelry when working with electrical equipment.
Failure to follow these instructions can result in death or serious injury.
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