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Electrical Power
WARNING:
Make sure the main power switch is in the OFF position before connecting or disconnecting
electrical power from the unit. Follow all applicable electrical and safety codes and procedures when
connecting power to the unit. Electrical connections should be made by an authorized electrical installer.
WARNING:
Make certain that the electrical supply is the same voltage and frequency as your unit (see identification
label).
Make sure electrical connections comply with all applicable electrical codes.
Ground the Chiller in accordance with NEC Article 250.
Operating voltage must be within
10% of the data plate rating.
Phase imbalance must be below 5%.
WARNING:
DO NOT apply power to the Chiller until the unit is ready for Startup
CAUTION:
DO NOT apply power to the Chiller until the Reservoir has been filled. When Controller power
is turned On, the pump automatically begins pumping. If the Reservoir has not been filled, the pump could
be damaged.
Use the voltage and amperage requirements specified on the identification label on the rear of the Chiller.
Remove the three screws securing the Chiller’s rear top panel and remove it. Remove the right side panel by
pushing up from the bottom to unhook the latching tabs. Remove the insulating cover over the electrical
compartment.
Bring properly sized power leads and ground from a fused disconnect to the unit. Use dual-element fuses in the
disconnect, sized according to National Electrical Code recommendations.
3 Phase Units:
The Chiller is equipped with a phase monitor that prevents startup if phase sequence is incorrect.
It will also turn the Chiller OFF in the event of a loss of one phase and/or prevent Chiller operation if there is a
voltage mismatch between any two phases greater than 8%. Be sure to connect electrical lines in proper
sequence, i.e.: L1, L2, and L3.
You may want to verify that electrical power to the unit is ON before reinstalling the side and rear panels.
WARNING:
DO NOT remove the ground wire while diagnosing any power supply problems.
Summary of Contents for DCA203C4
Page 1: ...Operator s Manual DuraChill Air and Water Cooled 2 and 3 HP Chillers 110 275 25 February 2015...
Page 9: ...110 275 8 Rear View Power Switch Power Switch...
Page 36: ...110 275 35 Pump Performance Specifications subject to change without notice...
Page 40: ...110 275 39 Appendix Flow Diagram Air Cooled Chillers...
Page 41: ...110 275 40 Flow Diagram Water Cooled Chillers...
Page 42: ...110 275 41 Wiring Diagram 208 230V 1 Phase Air Cooled Chillers...
Page 43: ...110 275 42 Wiring Diagram 208 230V 380 460V 3 Phase Air and Water Cooled Chillers...
