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Troubleshooting
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Summary of Contents for Carver GH Series
- Page 1 I-120 Revision 01...
- Page 2 SERVICE RECORD PAGE Service No. ________________ Size and Type ______________ Make ________________________ Customer Order No. ________________________ Date Installed __________________________________ Installation Date Location Application PUMP RATING Capacity (GPM) __________________________ Total Head (ft) _______________________________ Suction Pressure _________________________ Speed (RPM) ________________________________ Liquid __________________________________ Temperature ________________________________ Specific Gravity __________________________ Viscosity ____________________________________ Impeller Diameter (inches) ______________________________________________________________ PUMP MATERIALS...
- Page 3 NOTES ON INSPECTION AND REPAIRS INSPECTION DATE REPAIR TIME REPAIRS COST REMARKS...
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Page 4: Table Of Contents
TABLE OF CONTENTS Section/Paragraph Page LIST OF TABLES NUMBER TITLE PAGE GENERAL INFORMATION .....1 A. Recommended Torque Values ..9 A. Preface ........1 1. Troubleshooting......10 B. Pump Identification ....1 2. Enclosed Impeller Clearance...16 C. Parts Inventory Guide ....1 3. Impeller and Wear Ring Matching D. -
Page 5: General Information
A. PREFACE. Our general horizontal (GH) end Table 4) or requesting information, furnish suction pumps are designed to handle water nameplate data to Carver Pump Company or its acids and alkaline solutions for general service representative. When ordering a pump, refer to and process industry applications. -
Page 6: Ordering Code
The following Ordering Code defines the new ordering code enables Carver Pump Company GH Series pump and pump/motor and top plate to accept orders quickly, assuring timely and arrangements. When quoting or ordering a GH correct manufacture of the desired pump. -
Page 7: Safety Precautions
1. Prior to working on pump or driver, NOTE ensure all switches and circuit breakers have been locked in the The pump and equipment, as shipped open (off) position and tagged, “Out from Carver Pump Company, have of Service.” appropriate protection for short-term... -
Page 8: Storage
B. STORAGE. If the equipment is NOT representative from Carver Pump immediately installed and operated, Carver Company. If this is the case, Carver Pump Company recommends rotating each provides specific instructions for the shaft several revolutions at least once every two equipment during the extended period of weeks. -
Page 9: Installation Checks
Adjust metal supports or wedges motor, and baseplate. The complete set is until suction and discharge flanges assembled at Carver Pump Company. After are level. Accomplish alignment and ascertaining the unit has suffered no damage in leveling corrections by adjusting transit, install the pumping unit. - Page 10 Measure distance A or B between the straight edge and both shafts. Repeat measuring at two locations 120 degrees apart on periphery of coupling. DO NOT ROTATE COUPLING. The difference between the three measurements for A and B must not exceed 0.005 inches at any of the positions.
- Page 11 Check safety codes and always of the reducer and the pipe. Carver install protective guards or shields recommends using an offset (eccentric) as required by various federal, state, reducer.
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Page 12: Operation
Troubleshoot the aforementioned checks using A. PRE-START CAUTIONS. Table 1, Troubleshooting, or contact your nearest Carver Pump Company representative. B. PRIMING. Since the liquid pumped functions to lubricate various internal parts, dry running a centrifugal pump can result in extensive damage Before activating the pumping unit, and possible seizing. -
Page 13: Stopping The Pump
2. If the pumping unit has been idle for a 3. If the pump is stopped for overhaul, period of time, make sure unit is firmly close pressure gauge valves. attached to its foundation. 4. If unit is equipped with seal cooling 3. -
Page 14: Troubleshooting
Pump not primed. with section IV, Operation, item B, Priming. • • Check discharge valve. Discharge valve closed. • • Consult with nearest Carver Discharge head above shutoff. Pump Company representative or factory. • • Consult with nearest Carver Suction lift higher than pump rating. - Page 15 • • Liquid level in tank too Add liquid to system. low. • • Total head too high. Consult with nearest Carver Pump Company representative or factory. • • Wrong rotation. Check power connections to motor. • •...
- Page 16 Table 1. Troubleshooting (cont.) SYMPTOM PROBABLE CAUSE REMEDY • • Overload on motor (cont). Liquid handled of Consult with nearest higher specific gravity Carver Pump Company or lower viscosity than representative or intended application. factory. • • Incorrect impeller Trim impeller diameter diameter.
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Page 17: Maintenance
Do NOT overgrease. To prevent hours of operation. Bearings are lubricated at overgreasing, use a hand-operated Carver Pump Company with Amoco Rykon grease gun. Premium Grease No. 2EP, a non-soap, polyurea thickened grease with a drop point of 450 1. -
Page 18: Service And Repair
In such instances, use rust solvent and apply suitable NOTE extracting tools, wherever possible. Do NOT use Carver recommends replacing force under any circumstances. bearings if removed from the shaft. If it is necessary to reuse bearings... -
Page 19: Disassembly Of Power Frame On Frame-Mounted Pumps
7. Remove impeller (2) from shaft. 1. Clean all parts thoroughly or replace Remove impeller key (32). with new parts, as necessary. All sealing faces should be perfectly clean. Carver CAUTION recommends replacing all grease seals, lip seals, oil seals, gaskets, glands, and Do NOT pry composite parts. -
Page 20: Enclosed Impeller Clearance
performance cannot be restored, b. Measure inside diameter of impeller must be replaced. If new wear ring in three places. impellers are installed, make sure all c. If difference between high impellers are balanced. reading of inside diameter of 8. If the suction cover on an open impeller wear ring and low reading of pump shows excessive wear on the face outside diameter of impeller hub... -
Page 21: Assembly Of Pump
E. ASSEMBLY OF PUMP. Use figures 2 and 3, 10. Install backcover (11) on adaptor (71) and the following procedure to assemble the and secure with capscrews (601). pumping unit. NOTE NOTE On pumps equipped with a closed Replace bearing (16 or 18), once impeller, omit steps 14 through 15b. -
Page 22: Replacement Of Optional Wear
b. Install new shim (15) on suction Table 3. Impeller and Wear Ring Matching cover. Materials c. Install suction cover (9), securing with capscrews (611). IMPELLER MATERIAL WEAR RING MATERIAL d. Repeat step 15 until the proper Cast iron Cast iron (suction head) clearance is achieved. -
Page 23: Parts Lists And Sectional Drawings
accomplished on a lathe. 15. Install impeller (2), impeller washer (28), 8. Inspect impeller hub for damage. and impeller gasket (73X) on shaft and 9. Press new wear ring (7 and 7X) into secure with new impeller capscrew (26) suction cover (9). Beveled edge of wear and new impeller o-ring (89C). -
Page 24: Recommended Spare Parts List
Table 4. Recommended Spare Parts List QUANTITY PART # DESCRIPTION Impeller Shaft Wear Ring for Casing (optional) Wear Ring for Backcover 14, 14A Shaft Sleeve As required * Suction Cover Shims for Semi-Open Impeller Radial Bearing Thrust Bearing Bearing Locknut Impeller Capscrew Impeller Washer Impeller Key... -
Page 25: Sectional Drawings For Frame-Mounted Gh Pump
Closed Impeller 8 9 X Semi-Open Impeller Figure 2. Sectional Drawings for Frame-Mounted GH Pump... -
Page 26: Sectional Drawings For Close-Coupled Gh Pump
8 9 A 7 3 X 4 1 0 4 9 2 4 6 0 4 1 0 4 0 0 Closed Impeller 6 1 1 6 0 0 8 9 C 4 2 2 6 0 1 6 1 5 6 3 0 8 9 X 6 0 5... - Page 27 November 2003...
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