Page 2 - GENERAL PUMP; LH SERIES
GENERAL PUMP A member of the Interpump Group LH SERIES Page 2 INDEX1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3 2. SYMBOL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page ...
Page 3 - General warnings for safe operation
Page 3 GENERAL PUMP A member of the Interpump Group LH SERIES 1. INTRODUCTION LH high pressure water plunger pumps have been designed for long life industrial duties and provided they are correctly installed and maintained will give long trouble-free operation. Read and understand this manual before...
Page 4 - Safety of operation; NOTE: it must be emphasized that whereas protective; Safety of maintenance
GENERAL PUMP A member of the Interpump Group LH SERIES 3.3 Safety of operation The access into the area when a high pressure unit is working should be strictly prohibited to unauthorized personnel. The area should be suitably enclosed and its perimeter, so far as is reasonably practical, cordoned of...
Page 5 - PUMP IDENTIFICATION
GENERAL PUMP A member of the Interpump Group LH SERIES Page 5 4. PUMP IDENTIFICATION Each pump is fitted with a rating plate (see Fig. 1) containing the following information: 2. pump model and version 3. serial number 4. max RPM 5. max operating pressure (bar) 6. oil capacity (ltr) and oil specific...
Page 6 - GENERAL INFORMATION ABOUT PUMP; Water temperature; CONNECTIONS AND PLUGS; This hole must always be left
GENERAL PUMP A member of the Interpump Group LH SERIES Page 6 7. GENERAL INFORMATION ABOUT PUMP USE The LH pump has been designed to pump fresh filtered water at room temperature. LHZ and LHN special stainless steel versions are also available for critical fluids. 7.1 Water temperature Water tempera...
Page 7 - On no account should the pump be installed in such a
GENERAL PUMP A member of the Interpump Group LH SERIES Page 7 9. PUMP INSTALLATION 9.1 Positioning The pump should be installed flat on a rigid base by means of the four 3/4” feet. The base should be rigid enough to avoid any misalignment or flexing of the pump/transmission coupling axis due to the ...
Page 8 - with a frequency depending on the water quality,
GENERAL PUMP A member of the Interpump Group LH SERIES Page 8 9.5 Filtration All pumps require a suitable filter. The filter should be installed as close as possible to the pump, should allow easy inspection and have the following characteristics: 1. The filter capacity should be at least three time...
Page 9 - START UP AND RUNNING PROCEDURES; the pump must; Note: in case the pump has not run for a long period of; This hole must always be kept open.
GENERAL PUMP A member of the Interpump Group LH SERIES Page 9 10. START UP AND RUNNING PROCEDURES 10.1 Before start up Before start up make sure that the following conditions have been complied with: 1. Suction line should be connected: the pump must never run dry. 2. Suction line must be perfectly ...
Page 10 - MAINTENANCE INSTRUCTIONS; BRAND
GENERAL PUMP A member of the Interpump Group LH SERIES Page 10 11. MAINTENANCE INSTRUCTIONS 11.1 Crank mechanism maintenance. Check oil level through the oil level indicator 1, Fig 8 at least on a weekly basis. If necessary, top up from the oil plug 3, Fig. 8. Check the oil when cold and change the ...
Page 11 - Every time valves are inspected, all
GENERAL PUMP A member of the Interpump Group LH SERIES Page 11 Check the valve components for wear and replace where necessary. Every time valves are inspected, all o-rings and valve covers should be replaced. Reassemble the valve units and fit them back in the fluid end. Valve cover screws should b...
Page 12 - Pumping unit maintenance
GENERAL PUMP A member of the Interpump Group LH SERIES Page 12 11.3 Pumping unit maintenance The only maintenance operation required for the pumping unit is to periodically check the amount of water drained out by the pump through the hole provided in the lower cover (Fig 6, page 9). It clearly show...
Page 13 - Pressure packings and o-rings should always be
Page 13 GENERAL PUMP A member of the Interpump Group LH SERIES Disassemble the packing support from the cylinder by means of a pin key (1, Fig. 20). Remove the scraper (1, Fig. 21) and o-ring (2, Fig 22) from the packing support. In order to fit the new scraper in place, shape it manually as shown i...
Page 15 - SCREW CALIBRATION; only for a few seconds; PRECAUTIONS AGAINST FREEZING; If a pump is frozen or appears frozen ON NO ACCOUNT
GENERAL PUMP A member of the Interpump Group LH SERIES Page 15 Screw calibration is to be carried out by means of a torque wrench only: 12. SCREW CALIBRATION 13. MAINTENANCE TOOLS The following tools are designed to facilitate mounting and dismounting operations of some pump components: For disassem...
Page 16 - EXPLODED VIEW AND PARTS LIST
GENERAL PUMP A member of the Interpump Group LH SERIES Page 16 16. EXPLODED VIEW AND PARTS LIST