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DB & DBH

Horizontal Multistage Pumps

Installation &

Operating Manual

DB2

DB4

DB8

DB12

DBH

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Summary of Contents for DB

Page 1: ...DB DBH Horizontal Multistage Pumps Installation Operating Manual DB2 DB4 DB8 DB12 DBH...

Page 2: ......

Page 3: ...PUMP SPECIFICATIONS 1 1 2 INSTALLATION 2 ELECTRICAL CONNECTIONS 3 3 PRIMING 4 4 MAINTENANCE 5 4 INDEX Davis Shirtliff Ltd 2018 Contents herein are not warranted TROUBLE SHOOTING 6 5 WARRANTY 7 6...

Page 4: ...5 30 25 40 45 50 DB 8 50 DB 8 30 1 2 3 4 5 6 7 8 9 10 HEAD m 20 2 4 6 8 10 12 14 5 0 10 15 35 30 25 40 45 50 55 DB 12 50 DB 12 30 DB2 DB4 DB8 DB12 3 FLOW RATE m hr 3 FLOW RATE m hr 3 FLOW RATE m hr Co...

Page 5: ...rated motor unit are of monoblock design and particular attention has been paid to quietness and smooth operation MOTOR The pump is coupled to a totally enclosed fan cooled single phase squirrel cage...

Page 6: ...on a solid flat surface ensuring the shaft is in a horizontal position Ensure that the diameter of the suction pipe is at least the size of the pump suction inlet If the suction depth exceeds 4 meters...

Page 7: ...a thermal overload fitted in the motor windings Three phase motors should be installed with remote starter WARNING If there is negative suction i e the pump is above the suction water level the suctio...

Page 8: ...problem remove the pump body by unscrewing the relevant mounting bolts and clean it thoroughly to remove any encrustation Never carry out any work on the pump without having first disconnected from t...

Page 9: ...imed Clean foot valve Excessive suction height Air in suction Clogged foot valve Delivery head exceeds pump capacity Reduce delivery head Specify different pump Flow rate insufficient Reduce suction h...

Page 10: ...liability of Davis Shirtliff hereafter called the Company in respect of any defect or failure of equipment supplied is limited to making good by replacement or repair at the Company s discretion defec...

Page 11: ...8 Also proof of purchase including the purchase invoice must be provided for a warranty claim to be considered...

Page 12: ...INS179E 05 18...

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