Specifications

Document No. DER03022 INSTALLATION INSTRUCTIONS
Page 12 of 15 Effective Date 23 Dec 08
ELECTRIC POWER CONNECTIONS (CONT’D)
WARNING! CENTRIFUGE MUST BE OPERATED AT THE DESIGNATED
SUPPLY VOLTAGE.
WARNING! HIGH VOLTAGE MAY BE PRESENT. BE SURE FUSED
DISCONNECT SUPPLYING ELECTRIC POWER TO THIS EQUIPMENT IS
OPEN. LOCK OUT AND TAG OUT POWER SUPPLY TO PREVENT
ACCIDENTAL APPLICATION OF POWER WHILE MAKING ELECTRICAL
CONNECTIONS.
WARNING! ELECTRICAL CONNECTIONS MUST BE MADE IN ACCORDANCE
WITH THE NATIONAL ELECTRICAL CODE (NEC) AND ALL APPLICABLE
LOCAL CODES. FAILURE TO COMPLY MAY RESULT IN AN UNSAFE
CONDITION THAT COULD INJURE PERSONNEL OR DAMAGE EQUIPMENT.
ENSURE THAT ALL ELECTRICAL AND CONDUIT CONNECTIONS ARE
SECURE.
A fused disconnect primary power supply is required for this equipment. The fused
disconnect and interconnecting wiring to the equipment must be suitably sized and in accordance
with National Electrical Code (NEC) standards and all other applicable state and local codes.
Additional wiring requirements are as follows:
1. The fused disconnect device shall have sufficient interrupting capacity to clear the maximum
fault current capability of the power supply system.
2. The GND connections in the control cabinet and sensor system junction box must be
connected to a known ground.
BOWL, CONVEYOR, AND FEED PUMP MOTOR CONNECTIONS
The bowl and conveyor drive motors require three-phase line power and ground connections.
Power is derived through connections to terminal blocks inside the control cabinet. Similarly, the
customer’s feed pump motor must be connected to the centrifuge control system for control of its
operation.
Connect the bowl, conveyor, and feed pump motors to terminal blocks in the bottom left side of
the control cabinet as shown in Figure 3022-10. The control system can operate a feed pump
drive motor of up to 30 HP.