Specifications

INSTALLATION INSTRUCTIONS Document No. DER03020
Effective Date 10 Oct 08 Page 5 of 7
FEED PUMP
The customer must supply a positive-displacement feed pump of up to 15HP for delivering slurry
to the centrifuge. The pump must be connected to the centrifuge’s electrical control system as
described in this document so that its operation can be supervised by the centrifuge.
ELECTRIC POWER CONNECTIONS
Three-phase line power and ground connections are required. In addition, the customer’s feed
pump must be connected to the centrifuge control circuit. All other connections have been made
at the factory. Connect the facility’s three-phase electric power supply and customer’s feed pump
to the electrical junction box in accordance with Figure 3020-5. Refer to the centrifuge electrical
diagrams in Section 11 - Reference Drawings for additional assistance and information on
electrical connections.
Incoming power to the centrifuge is three-phase 50 or 60 Hz supplied at the customer-specified
voltage. The drive motor is not dual wound and must be operated at the design voltage. For
motor specifications, refer to Section 12 - Supplier Data.
WARNING! DRIVE MOTOR 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 connection in the power supply junction box must be connected to a known ground.
3. The feed pump connections are made to terminals in the electrical junction box as shown. The
feed pump starter can operate a feed pump drive motor of up to 15 HP.