Quincy Compressor 50093-103 - Manual (Page 64)

58
POOR PUMPING SPEED (Capacity)
PROBABLE CAUSE CORRECTION
Clogged inlet filter Replace inlet filter element.
Intake line is narrow or contains
restrictions or debris Re-plumb sections of line that are narrow or sections with
sharp turns. Maintain pump inlet diameter as far into the
process as possible. Check for obstructions in plumbing.
Problem in lubrication system Check for adequate fluid flow rate and for restrictions in
fluid piping.
Excessive back pressure/separator
clogged Replace separator element-keep exhaust at atmospheric
pressure.
Low fluid level Fill fluid reservoir to proper level.
Condensation or contamination in
fluid Replace pump fluid.
Pump is cold Allow adequate warm-up time for pump to reach operating
temperature.
Shaft seal leak Replace shaft seal.
Leak Leak check system and compare to original rate of rise
pressure test. Look for damaged gaskets and leaks in
check/isolation valves. Check for leaks in inlet valve, and
piping to airend.
Vapor load being generated Possible leak in water cooling jacket or water piping in
vacuum system. Leak check.
Materials of construction Materials not compatible with vacuum service. Observe all
vacuum engineering conventions.
Temperature of system or process
gas increasing Increases in temperature translate into ACFM load. Keep
temperatures constant.
Inlet valve not opening fully Correct the situation in accordance with the instructions in
"Inlet Valve Not Opening or Closing in Relation to
Demand" section of the troubleshooting guide.