Section 7
MAINTENANCE
45
LINE PRESSURE RISES ABOVE
CUT-OUT PRESSURE SETTING
ON PRESSURE SWITCH
(CONT.)
EXCESSIVE COMPRESSOR
FLUID CONSUMPTION
PRESSURE RELIEF VALVE
OPEN REPEATEDLY
LIQUID WATER IN COM-
PRESSED AIR LINES
Defective Pressure Switch
Defective Regulator Valve
Plugged Control Line Strainer
Defective Blowdown Valve
High Pressure Shutdown Switch is
Defective or Incorrectly Adjusted
Clogged Return Line or Orifice
Separator Element Damaged or
Not Functioning Properly
Leak in the Lubrication System
Excess Fluid Foaming
Fluid Level Too High
Defective Pressure Relief Valve
Plugged Separator
Water Vapor Condensation from
Cooling and Compression Occurs
Naturally
Check that diaphragm and contacts are not
damaged. Replace if necessary.
Check that air bleeds from control orifice
when the pressure switch contacts open.
Readjust; Repair or replace it if necessary (kit
available).
Clean strainer (screen and o-ring replace-
ment kit available).
Check that sump pressure is exhausted to
the atmosphere when the pressure switch
contacts open. Repair or replace if neces-
sary (kit available).
Readjust or replace.
Clean strainer.
Clean orifice.
Change separator.
Check all pipes, connections and compo-
nents.
Drain and change.
Drain and change.
Replace.
Check separator differential.
Remove the water vapor from compressed air
prior to distribution through the air system.
Check operation of aftercooler and moisture
separator. Install a compressed air dryer
sized for the flow and dryness level required.
(Note: Filters may also be required to remove
particulates, liquid oil aerosols or for oil vapor
removal. Change cartridges as recommend-
ed by the filter manufacturer). Check all drain
traps routinely to insure their proper opera-
tion. Maintain them regularly.
7.10 TROUBLESHOOTING GUIDE- STANDARD ELECTRO-MECHANICAL (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
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