DAYLIFF DHF Installation & Operating Manual Download Page 8

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PROBLEM

POSSIBLE CAUSE

SOLUTION

Flow rate
insufficient

Reduce suction height

Clean foot valve and, if necessary
whole Intake pipe

Disassemble pump and carefully
clean pump body and impeller

Tripped motor
overload

Check voltage and ventilation

Release impeller
(See section on maintenance)

Foot valve partially clogged

Impeller blocked

Suction height at limit

Overheated motor

Impeller stuck

Summary of Contents for DHF

Page 1: ...DHF Horizontal High Flow Centrifugal Pumps Installation Operating Manual...

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Page 3: ...SPECIFICATIONS 1 1 2 SYMBOLS WARNINGS 2 WIRING 3 3 INSTALLATION 4 3 TROUBLE SHOOTING 5 5 INDEX Davis Shirtliff Ltd 2023 Contents herein are not warranted TERMS OF WARRANTY 6 7...

Page 4: ...d for high flow commercial and industrial water supply uses in water boosting and transfer applications The pump body is cast iron with a brass impeller MOTOR Pumps are close coupled to reliable TEFC...

Page 5: ...ugh for maximum pump performance suction height should be minimised If there is negative suction i e the pump is above the suction water level the suction pipe must be slightly angled upwards towards...

Page 6: ...p rating plate Electrical connections must be made according to details in the pump junction box cover and effective earthing must be provided according to local regulations Single phase motors are pr...

Page 7: ...ing it in the special slot on the rear of the pump shaft If this is not sufficient to solve the problem remove the pump body by unscrewing the relevant mounting bolts and clean it thoroughly to remove...

Page 8: ...and if necessary whole Intake pipe Disassemble pump and carefully clean pump body and impeller Tripped motor overload Check voltage and ventilation Release impeller See section on maintenance Foot va...

Page 9: ...f careless handling lack of maintenance faulty installation incompetence on the part of the equipment user Acts of God or any other cause beyond the Distributors reasonable control Also any repair or...

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Page 12: ...INS528A 03 23...