Quincy Compressor QSVB Series User Manual

41
PROBABLE CAUSE
CORRECTIVE ACTION
Low Vacuum Delivery
Plugged intake filter element Clean filter element or replace with new element.
Excessive leaks in the service lines Check service lines for leaks with soap suds
Inlet valve not fully open Check for build up or gumming of shaft
Excessive vacuum demand Re-evaluate vacuum demand. Add additional vacuum pumps as needed
Excessive leaks in service lines Check service for leaks using soap suds and repair as needed
Inlet valve not fully open Correct in accordance with the instructions in “Inlet valve not opening
or closing in relation top air demand” section of troubleshooting guide
Plugged intake filter Replace filter element
Differential pilot valve not set correctly Adjust differential pilot valve to achieve desired modulation range
Vacuum pressure switch not set correctly Adjust vacuum pressure switch to achieve desired cut-in and cut-out
pressure
Faulty vacuum pressure gauge Check and replace as necessary
High Discharge Air Temperature
Cabinet panels removed Replace all panels, ensure all sealing surfaces and materials are
satisfactory
Faulty thermal valve Replace thermal valve element
Cooler plugged Clean cooler, find and correct cause of contamination
Cooling water temperature is too high
Low fluid level
Excessive pressure in exhaust line
Check and adjust as necessary
Add fluid to required level on reservoir
Clear restrictions in exhaust line to ensure atmospheric pressure at
discharge
Frequent Air/Fluid Separator Clogging
Faulty inlet filter or inadequate filter for
the environment
If faulty inlet filter elements, replace them.
Faulty fluid filter Replace fluid filter element
Fluid breakdown Correct in accordance with the instruction in “Fluid Breakdown” section
of the troubleshooting guide
Incorrect fluid separator element Use genuine Quincy replacement elements only
Extreme operating conditions such as high
vacuum pump discharge temperatures,
high ambient temperature and high
reservoir pressure
Operate vacuum pump at recommended reservoir pressure and air
discharge temperature
Mixing different grades or types of fluids DO NOT MIX DIFFERENT GRADES OR TYPES OF FLUID. DO
NOT MIX FLUIDS FROM DIFFERENT MANUFACTURERS
Incorrect fluid Follow vacuum pump fluid specifications as described in lubrication
section of this manual

Quincy Compressor QSVB Series Specifications

General

Brand	Quincy Compressor
Model	QSVB Series
Category	Water Pump
Language	English