Summit CC - TROUBLESHOOTING; PUMP PROBLEMS; PROBABLE CAUSE AND REMEDY

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
16 SUMMIT PUMP MODEL CCFM GENERAL PURPOSE
9 TROUBLESHOOTING
9.1 PUMP PROBLEMS
Pump turns, no flow. 1,2,3,4,5,8,9,10,11,12,13,14,15,16,21,22
Pump flow rate below expected capacity. 1,2,3,4,5,8,9,11,12,13,15,16,17,18,21
Pump will not produce rated pressure. 1,2,3,4,5,10,11,13,15,16,18,21,22,26,27
Pump develops too much pressure. 6,8,9,12,27
Pump no longer self-primes. 1,2,3,4,5,7,8,10,11,12,13,14,15,16,18,19,21,22
Pump won't turn/motor overloads. 2,4,5,6,7,8,9,15,18,19,20,21,23,24,25,26
Pump is very noisy/excessive vibration. 1,2,3,4,5,6,7,10,11,12,13,14,15,16,17,18,19,20,22,24,25,26
Pump runs hot. 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26
Pump seals short life. 1,2,3,4,5,6,7,8,9,11,12,13,14,15,1617,18,19,20,23,24,25
Excessive internal wear. 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,19,20,21,22,23,24,25
9.2 PROBABLE CAUSE AND REMEDY.
NPSHA not sufficient.
1
Pump has run dry.
2
Air leaking into the pump. 3
Liquid temperature higher than stated.
4
Viscosity higher than stated. 5
Pump running too fast for application.
6
Abrasives in liquid.
7
Losses in system are greater than calculated
8
Suction or differential pressure too high. 9
Suction valve not open.
10
Suction valve partially open.
11
Discharge valve not open or partially open.
12
Clogged strainer. 13
Supply vessel empty.
14
Pump rotation wrong.
15
Minimum submergence not met
16
Velocity in suction pipe too high
17
Casing ring and Impeller hub worn. 18
Improper seal installed. 19
Inadequate lubrication.
20
Velocity in suction is too low for solids
21
Suction lift if too great and/or pump is not primed
22
Material compatibility.
23
Drive misalignment
24
Base plate loose
25
Drive not sized for horsepower required.
26
Pressure gauges are not near pump suction and discharge
27