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This instruction is valid for all standard high pressure pumps: 

E4, D4 and D6
Contents 

Page 

Pump identification 

2

Installation 

3

Start-up 

8

Trouble shooting 

10

!

Before commencing any work, read this instruction carefully! Failure to comply 

with these instructions may cause damage and personal injury!

Medium and high 

pressure pumps

Installation and Start-up Instruction

Screw pumps

MH 1202.04 GB

Summary of Contents for Imo Pump D4 BP Series

Page 1: ...identification 2 Installation 3 Start up 8 Trouble shooting 10 Before commencing any work read this instruction carefully Failure to comply with these instructions may cause damage and personal injury...

Page 2: ...P With Valve Y External ball bearing Z Internal ball bearing Com ments Pump name Material pump casing 1 Shaft seal design 1 Moun ting 2 Valve other 3 Design modifi cation 1 Rotor lead 1 Size 1 Also va...

Page 3: ...ctions may cause damage and personal injury Transport and storage The pump shall always be protected against ingress of water and other impurities The pump shall always be stored in a clean dry and wa...

Page 4: ...vided the radial forces are kept within the specified range We recommend that the pump is connected via our standard connecting frame and IMO AB standard coupling The coupling and alignment shall be s...

Page 5: ...p inlet flange does not exceed the suction capability of the pump Make a proper calculation of the suction line includ ing components such as valves strainer pipe bends etc Generally the pressure drop...

Page 6: ...een the strainer and the pump inlet is recom mended to indicate when the strainer needs clean ing Some pumps are equipped with inlet strainers in standard design mesh size 0 5 mm For other pumps strai...

Page 7: ...pplied from IMO AB with an integrated pressure relief valve designed for external overflow The return line from the pressure relief valve should be run back to the tank to limit the temperature rise i...

Page 8: ...f motor possible Open the shut off valves in the inlet and delivery pipes to the full extent Set pump pressure relief valve at the lowest opening pressure The pump is now ready for starting If the suc...

Page 9: ...ust the pump pressure for the rated value of the system If the pump fails to prime do not run it for more than a few seconds Repeat the start procedure a few times at intervals of a few minutes If thi...

Page 10: ...l is too cold or has higher viscosity than anticipated Counter pressure in the dis charge line is too high 1 The pump cannot be primed Connecting and discon necting of electric cables must be done onl...

Page 11: ...nt support of pipe work Wrong alignment Air leakage into the suction line Free air in the liquid or gas cavitation Faulty electrical supply See above Pressure too high Re adjust the pressure relief va...

Page 12: ......

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