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an index line for use with the index scale 0 to 8 in obtain-
ing a desired setting.
These valves must be handled with care and proper
tools and techniques must be used when working on
the valve. Care must be used when handling the capil-
lary tube; a kink or break in the tubing or connections
will make the valve inoperative. Never attempt to
change capillary length. Excess capillary tube should
be carefully coiled and placed so that damage will not
occur in normal maintenance or traffic past the unit.
If a leak developes through the packing, tighten the
packing gland nut firmly with a wrench to reseat the
packing around the valve stem, then back off the nut
until loose, and finally retighten the nut finger tight.
Tightening the packing nut too tight may cause erratic
operation. An occasional drop of oil on the valve stem
at the packing nut will prolong packing life.
If the valve malfunctions, check for bent or binding
(paint or corrosion, etc.) valve stem, foreign material in
the valve, erosion, or thermal system (capillary) failure.
If foreign material or scale is likely, the use of a strainer
in the inlet water line is recommended.
WATER SHUTOFF VALVE – WATER–COOLED
HEAT EXCHANGER (Optional Equipment But Rec-
ommended) (FIGURE 5–1, page 35) – A magnetic so-
lenoid–operated water shutoff valve rated at 150 PSIG
water pressure should be mounted in the water inlet
line ahead of the oil cooler. The valve should be wired
into the compressor control circuit in such a manner
that the valve opens to allow water to flow any time the
ON–OFF push button is ON and the compressor is run-
ning. When the compressor stops under automatic
control, or is shut off manually, the valve should close,
stopping water flow through the system.
OIL RESERVOIR – The oil reservoir–separator com-
bines multiple functions into one vessel. The horizontal
section is the oil reservoir, providing oil storage capac-
ity for the system and a primary oil separation means.
The vertical section contains the final oil separator and
has the discharge line mounted on the upper flange.
The reservoir also provides limited air storage for con-
trol and gauge actuation.
COMPRESSOR OIL SEPARATOR located in the ver-
tical section of the oil reservoir consists of a single high
efficiency, pleated element and provides the final re-
moval of oil from the air stream. Oil from inside the sep-
arator element is returned through tubing to the com-
pressor cylinder.
Oil carry–over through the service lines may be caused
by a faulty oil separator, faulty minimum pressure
valve, overfilling of the oil reservoir, oil that foams,
moisture in the oil, or oil return line malfunction. If oil
carryover occurs, inspect the separators only after it is
determined that the oil level is not too high, the oil is not
foaming excessively, the oil return line from the dis-
charge manifold to the compressor cylinder is not
clogged or pinched off, the return tubes inside the sepa-
rators are not loose or broken, the check valve in the
oil return line is functioning properly, and there is not
water or an oil/water emulsion in the oil.
Oil carry–over malfunctions of the oil separator are
usually due to using elements too long, heavy dirt or
varnish deposits caused by inadequate air filter ser-
vice, use of improper oil or using oil too long for existing
conditions. A ruptured or collapsed separator element
is usually due to heavy dirt or varnish buildup in the fil-
tering material. Excessive tilt angle of the unit will also
hamper separation and cause oil carry–over.
Oil separator element life cannot be predicted; it will
vary greatly depending on the conditions of operation,
the quality of the oil used, and the maintenance of the
oil and air filters. The condition of the separator can be
determined by pressure differential gauging or by in-
spection.
Pressure Differential Gauging – The ”CHANGE
SEPARATOR” advisory will flash when the pressure
differential across the oil separator reaches approxi-
mately 8 PSI. Replace the oil separator element at this
time. If ignored, the unit will shut down and the advisory
will illuminate steadily when the pressure differential
reaches 15 PSI.
Using an oil separator element at ex-
cessive pressure differential can
cause damage to equipment. Replace
separator when the ”CHANGE SEP-
ARATOR” Advisory appears.
A sudden drop to zero pressure differ-
ential or sudden heavy oil carryover
may indicate a ruptured element.
Inspection – After removal of the separator element,
shine a light inside the element to reveal areas of heavy
dirt or varnish deposits or breaks (ruptures) in the ele-
ment media.
Содержание ELECTRA-SAVER EAU PD - 200 HP
Страница 13: ...13 10 612 Page 3 FIGURE 1 4 STARTER BOX FIGURE 1 5 PACKAGE CONTROLLER AND STARTERS...
Страница 16: ...13 10 612 Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Страница 17: ...13 10 612 Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077...
Страница 40: ...13 10 612 Page 30 FIGURE 4 8 CONTROL SCHEMATIC COMPRESSOR AT FULL LOAD 214ECM797 Ref Drawing...
Страница 41: ...13 10 612 Page 31 FIGURE 4 9 CONTROL SCHEMATIC COMPRESSOR FULLY LOADED LOW DEMAND MODE 216ECM797 Ref Drawing...
Страница 42: ...13 10 612 Page 32 FIGURE 4 10 WIRING DIAGRAM 212EAP546 Ref Drawing...
Страница 43: ...13 10 612 Page 33 FIGURE 4 11 AUTO SENTRY ES CONTROLLER DISPLAY...
Страница 45: ...13 10 612 Page 35 FIGURE 5 1 FLOW DIAGRAM AIR OIL SYSTEM 215EAU797 Ref Drawing...
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