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MODELS CPM18-40 AND CPM24-30
CPM SERIES INDUSTRIAL PUMPS
INSTALLATION AND SERVICE MANUAL
NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible
party who maintains the system.
Part # 23833A273 | © 2014 Pentair Ltd. | 10/08/14
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Summary of Contents for Pentair Myers CPM Series
- Page 1 INSTALLATION AND SERVICE MANUAL NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible party who maintains the system. Part # 23833A273 | © 2014 Pentair Ltd. | 10/08/14...
- Page 2 INSTRUCTIONS nozzles, or gun on and off to be sure that pressure adjustment and regulator operation are satisfactory. CAUTION: Positive displacement pumps must have a Nozzle capacity should not exceed 90% of pump proper size and operable type of pressure regulating capacity for satisfactory regulator operation.
- Page 3 VALVE SERVICE Measure the shim gap adjacent to each of the screws by inserting a flat feeler gauge in the gap until it When servicing valves always replace O-rings. bottoms out. The required shim thickness for this cap Remove bolts and valve clamp. Remove valve cover is equal to the average of the two gap measurements, on top of fluid access to valve components.
- Page 4 This procedure can be followed only where the amount of sanding does not reduce the normal diameter of the crank pin. Worn or corroded crank pins can be ground and polished down to .030" under the size when the crank was new.
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Page 5: Troubleshooting
THE PUMP MUST BE INSTALLED WITH A PRESSURE RELIEF VALVE IN DISCHARGE LINE TROUBLESHOOTING Pump fails to build pressure with discharge closed Failure to hold pressure with discharge open Pump is noisy Pump gets hot Pressure gauge shows abnormal fluctuation Regulator chatter POSSIBLE CAUSE OF PROBLEM 1. - Page 6 5. If the pressure regulator internal bypass valve is to heat the oil and other working parts, will not normally worn, it will allow too much of the pump capacity to accumulate water by condensation. Replace the plunger be bypassed and recirculated back to the tank. By cups as soon as they start to leak.
- Page 7 18. Noisy pump operation can be caused by a loose plunger rod in the crosshead. This noise usually has a regular cadence timed with each stroke of the plunger. When this occurs, always replace both the rod and the crosshead. 19.
- Page 8 CPM 18-40 AND CPM 24-30 23833A273 10/08/14...
- Page 9 CPM18-40 PLUNGER PUMP PARTS LIST (25905F000 STEEL) RIGHT–HAND CPM 18-40L PLUNGER PUMP PARTS LIST (25905F010 STEEL) LEFT–HAND CPM 24-30 PLUNGER PUMP PARTS LIST (25905F012) RIGHT-HAND Item Eng. No. Description Qty. Item Eng. No. Description Qty. 05737A021 OIL FILL CAP 14946A003 WASHER, SEAL 3/8 17995A001 OIL FILL NIPPLE...
- Page 10 CPM 18-40ST PLUNGER PUMP PARTS LIST (25905F004 304 SST) RIGHT-HAND CPM 18-40STL PLUNGER PUMP PARTS LIST (25905F014 304 SST) LEFT-HAND CPM18-40SST PLUNGER PUMP PARTS LIST (25905F001 316 SST) RIGHT–HAND CPM 18-40SSTL PLUNGER PUMP PARTS LIST (25905F011 316 SST) LEFT–HAND Item Eng.
- Page 11 CPM 18-40 AND CPM 24-30 BODY CRANKSHAFT Rugged cast iron Rotates in either direction. crankcase serves as oil Automotive-type heat- reservoir. Removable treated alloy steel. cover section for easy service. PLUNGER ASSEMBY Solid stainless steel stud with TECH-23. VALVE ASSEMBLIES Stainless steel seats.
- Page 12 (f) if unit is used for purposes other than for what it is designed and manufactured; (g) to any unit that has been repaired or altered by anyone other than Pentair Myers or an authorized Pentair Myers service provider;...
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