Section 1
DESCRIPTION
7
indicators (one for the separator element and one
for the bearing lube filter). Located on the electrical
control box door are the stop and start push but-
tons and the hourmeter.
Refer to Figure 1-3 for functional locations of the fol-
lowing controls and indicators:
• The line (terminal) pressure gauge is connected
to the dry side of the receiver downstream from the
check valve and continually monitors this air pres -
sure.
• The sump pressure gauge continually monitors
the sump pressure at the various load and/or un -
load conditions.
• The discharge temperature gauge monitors the
temperature of the air leaving the compressor unit.
F or both air- cooled and water-cooled compressors
the n ormal reading is approximately 190 °F.
• The air filter restriction gauge monitors the condi-
tion of the air intake filter and shows red when filter
service is required. This restriction gauge must be
reset manually (See Figure 1-5).
• The START pushbutton turns the compressor on
(See Figure 1 -6).
• The STOP pushbutton turns the compressor off.
• The hourmeter records accumulative hours of op-
eration for the compressor and is useful for plan-
ning and logging service operations (See Figure
1-6).
• The separator maintenance indicator monitors
the condition of the separator element and shows
red when element restriction is excessive. This indi-
cator is automatically reset after the element has
been changed.
• The bearing lube filter maintenance indicator
monitors the condition of the bearing lube filter ele-
ment and shows red when the element should be
changed. This indicator is also automatically reset
(See Figure 1 -2) .
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