VH Owner’s Manual • Installation • Use • Maintenance
GENERAL PUMP INDEX A member of the Interpump Group VH SERIES 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3 3. SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3.1 General warnings for safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3.2 High pressure unit safety requirements . . . . . . . . . . . . . . . . . . . . . .
GENERAL PUMP 1. INTRODUCTION A member of the Interpump Group VH 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 using your pump; it contains the necessary information for the correct installation, use and maintenance as well as some practical suggestions for trouble shooting.
GENERAL PUMP A member of the Interpump Group 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 off and proper warning notices displayed in prominent positions.
GENERAL PUMP 4. PUMP IDENTIFICATION VH SERIES A member of the Interpump Group Each pump is fitted with a rating plate (see Fig. 1) containing the following information: 2. 3. 4. 5. 6. 7. pump model and version serial number max RPM max operating pressure (bar) oil capacity (ltr) and oil specification max flow rate (l/min) Pump model, pump version and serial number should be specified when ordering spare parts. Should the pump be modified (i.
GENERAL PUMP A member of the Interpump Group 7. GENERAL INFORMATION ABOUT PUMP USE VH SERIES 8. CONNECTIONS AND PLUGS The VH pump has been designed to pump fresh filtered water at room temperature. 7.1 Water temperature The max water temperature is 30oC (86oF) 7.2 Max flow and pressure ratings The performance data indicated in the catalog and on the rating plate refer to the maximum performance of the pump.
GENERAL PUMP 9. PUMP INSTALLATION A member of the Interpump Group 9.1 Positioning The pump should be installed flat on a rigid base by means of the four M14 threaded feet. The base should be rigid enough to avoid any misalignment or flexing of the pump/transmission coupling axis due to the torque involved during operation. 9.2 Direction of rotation Fig. 5 shows the correct direction of rotation looking at the pump from the fluid end side.
GENERAL PUMP A member of the Interpump Group 9.6 Filtration VH pumps require 10 to 20 microns water filtration degree. For a correct filtration system three individual filter units should be provided and positioned as shown in Fig. 6. The filters should be installed as close as possible to the pump, allow easy inspection and have the following specifications: a. Capacity of each filter should be at least three times the rated pump flow rate. b.
GENERAL PUMP VH SERIES A member of the Interpump Group 10.3 Water cooling system During operation the cooling water is drained out of the pump though the port (4, Fig. 7) located underneath the pump head. The cooling water line should be connected to the inlet line BEFORE the feed pump as shown below. 11. MAINTENANCE INSTRUCTIONS 11.1 Crank mechanism maintenance. Check oil level though the oil level indicator (1, Fig. 8) at least on a weekly basis. If necessary, top up from the oil plug 3, Fig. 8.
GENERAL PUMP A member of the Interpump Group 11.2 Fluid end maintenance The fluid end does not require periodical maintenance. Service operations are limited to valve inspection and/or replacement, when necessary. VH SERIES Remove the pump head (1, Fig. 12). In order to have access to the delivery valves loosen the 12 valve cover screws (1, Fig. 9) and remove the covers. Once removed take out the delivery valve guide with the spring and valve poppet.
GENERAL PUMP A member of the Interpump Group Reassemble valves and head back in place by following the disassembling steps in the opposite sequence and use a torque wrench at the following settings for valve cover screws and head screws: -Valve cover screw: 54.2 ft. lbs. -Head screws: 144.6 ft. lbs. NOTE: In order to facilitate reassembling operation use our tool (1, Fig.
GENERAL PUMP A member of the Interpump Group Once the cylinders are removed, loosen the plungers and check them for wear (Fig. 20 and 21). Replace if necessary. VH SERIES Turn the cylinder upside down, hold it vertically, insert a pin of adequate dimensions (1, Fig. 24) and smartly tap until the complete pressure packing set is out (1, Fig. 25). The pressure packing set (1, Fig. 25) hould be replaced at every disassembling.
GENERAL PUMP A member of the Interpump Group Fit each new component of the pressure packing set in the cylinder making sure of the correct order as shown in Fig 26: 1. Packing bushing 2. Packing ring 3. Back packing 4. Pressure Packings 5. Pressure packing retaining bushing VH SERIES Fit the packing support nut back in place and tighten. The new rear seal should be mounted with the larger diameter side in first, as shown in Fig. 28.
GENERAL PUMP A member of the Interpump Group 12. SCREW CALIBRATION Screw calibration is to be carried out by means of a torque wrench only: DESCRIPTION Ft. Lbs. N-m Kgm. Head Bolts 133.8 181.4 18.5 Connecting Rod Screws 28.9 39.2 4 Valve cover screws Plunger bolts 54.2 28.9 13. MAINTENANCE TOOLS 73.5 39.2 7.
GENERAL PUMP A member of the Interpump Group 16.
GENERAL PUMP Item Part # 1 F040000130 3 F881013100 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 F871115153 F010100050 F010100040 F871125154 F881080014 F911110002 F063400100 F801053002 F872043001 F801057001 F801053003 F063400120 F080600000 F881011153 F801054002 F071000030 F050000030 F871350002 F812000002 F040400010 F250001050 F872138010 F071000020 F041200000 F010200000 F124200090 F124200100 F124200110 F250000050 F060100340 F060100420 F82
GENERAL PUMP A member of the Interpump Group 17. TROUBLE SHOOTING VH SERIES THE PUMP DOES NOT PRODUCE ANY NOISE: the pump is not primed and is running dry! - No water in the inlet line - The valves are blocked - The pressure line is closed and does not allow the air to get out the fluid end. INSUFFICIENT PUMP PRESSURE: - The nozzle is (or has become) too large.
GENERAL PUMP MAINTENANCE LOG A member of the Interpump Group VH SERIES HOURS & DATE OIL CHANGE GREASE PACKING REPLACEMENT PLUNGER REPLACEMENT VALVE REPLACEMENT GP Companies, Inc. 1174 Northland Drive Mendota Heights, MN 55120 Phone:651.686.2199 Fax: 800.535.1745 www.generalpump.com email: sales@gpcompanies.com Ref 300009 Rev.
