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DISORDERS
Causes and Remedies
Experience has demonstrated that the major por
tion
compressor disorders is caused by lack of proper lubri
cation and the entrance of dirt which results in the formation
of carbon. These disorders are practically eliminated with the
use of the "F-I-A" mechanically operated lubricator and the
Type "G" air filter, providing these two devices are properly
maintained in normal operating condition.
COMPRESSOR REFUSES TO START.
CAUSE :-Insuffi
cient oil, due to improper feed of lubricator, or oil
washed out of cylinder by water of condensation;
end of the main valve pis
ton; or rust having accumulated during time compressor
has lain idle. Remedy:-shut off
take off revers-
valve cap, pour in a small quantity of oil, re
place cap, and then turn on steam quickly. In many
cases when the compressor will not start when steam is
first turned on, if steam is then turned off and allowed to
remain off for one or two minutes, and then turned on
quickly, it will start without the use of any oil, except
that from the lubricator.
COMPR"~SSOR
GROANS.
needs oil. Remedy:
rod
saturate
CAUSE:-(l) air cylinder
put some oil in air
dry and
(3) steam cylinder needs oil.
lubricator to correct feed.
with oil. Cause:
Remedy:-(3)
Excessive leakage past the air piston packing rings,
or past a discharge valve, causes heating, destroys lubri
cation and results in groaning.
62
,
DISORDERS
UNEVEN STROK.jS OF THE COMPRESSOR.
air valves;
valves
j
(3) clogged
valve passages
j
.
e·,
..
,
strainers under upper intermediate valves; (5) leaky air
valves; or (6) binding or cutting of the reversing rod.
Reml'!dy:-locate cause, if possible, and correct it by
cleaning out clogged or dirty passages, air valves and
strainers, replacing worn or leaky valves, or straighten
ing or replacing the reversing rod.
SLOW
IN
COMPRESSING AIR.
CAUSE:-(l)
leakag{~
the air piston packing rings, due to poor
III
cylinder or rings; (2) valves and passages
air suction strainer
v~~'''''''v~.
To determine which is
the trouble, obtain about
90 pounds air pressure, reduce the speed to 40 or 60 single
strokes per minute, then listen at the "Suction Openings"
and note if air is drawn in during only a portion of each
stroke, and if any blows back. (Note:-When both suc
tion openings are connected to a common inlet pipe, it is
necessary to disconnect the suction pipe before making
this investigation).
If
the latter, an inlet valve is leak
ing.
If
the suction does not continue until each stroke is
nearly completed, then there is leakage past the air
from the main reservoir
valves.
Remedv:-(31 clean
COMPRESSOR HEATS.
CAUSI·::-·(1) air passages are
clogged; (2) leakage past air piston packing rings; or
(3) the discharge valves have insufficient lift. Remedy:
-(1)
clean air passages; (2) renew air piston rings; (3)
regulate lift of discharge valves to 3-32 of an inch on the
~
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