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for the doors to open completely. Any of the enclosure
doors may be removed by opening the door and lifting
it up slightly to disengage the hinges.
The motor inspection service panel is held by two
latches and lifts away from the enclosure. The air filter,
water filters and oil filter are easily accessible through
a side door.
Do not operate the compressor with
the fan and coupling guard removed.
Exposed fan and belts may cause
injury to personnel.
COMPRESSOR WATER SPECIFICATION – The
compressor initial fill and make–up water must meet
the United States Environmental Protection Agency
National Primary Drinking Water Regulation (See
Table at the end of this section, page 18.) By requiring
potable water fit for human consumption, a quality level
is defined which is most generally readily available.
Backflow Preventers must be
installed on the potable water supply
line to the compressor to prevent high
pressure air from blowing into the wa-
ter supply.
Use of compressor initial fill and
make–up water not meeting all water
specification standards noted may
result in contamination of the dis-
charge air stream.
Compressor water seal leakage may
occur. You must have potable make–
up water available.
Water may no longer be potable after
use in the compressor.
Maximum Limit
1)
Total Hardness as CaCO
3
150 parts per million
2)
Either Total Dissolved Solids
500 parts per million
or Specific Conductance
800 Micormhos/cm
FIGURE 2–3 – ADDITIONAL WATER LIMITATIONS
In addition to the requirements of the National Primary
Drinking Water Regulation the two limits listed in Figure
2–3 shall not be exceeded.
Use of compressor initial fill and
make–up water exceeding these lim-
its could result in excessive scale
formation damaging the equipment.
If a proposed water supply is questionable, the water
should be analyzed. If the water does not comply with
this specification, a water treatment service can recom-
mend equipment to satisfy this specification. Hardness
can often be reduced by using a sodium ion exchange
water softener.
AUXILIARY AIR RECEIVER – An auxiliary air receiver
is not required if the piping system is large and provides
sufficient storage capacity to prevent rapid cycling.
When used, an air receiver should be of adequate size,
provided with a relief valve of proper setting, a pressure
gauge and a means of draining condensate.
MOISTURE SEPARATOR/TRAP – Since the unit is
equipped with a built–in aftercooler, a combination
moisture separator and trap is furnished with the unit.
The moisture from the trap is piped to the package
drain line.
CONTROL PIPING – External control piping is not nec-
essary since the unit is factory wired and piped for the
control system specified.
INLET LINE – Where an inlet line is used between the
air filter and the compressor, it must be thoroughly
cleaned on the inside to prevent dirt or scale from en-
tering the compressor. If welded construction is
Summary of Contents for TWISTAIR EWDQ D
Page 14: ...13 11 602 Page 4 FIGURE 1 6 AIR WATER SCHEMATIC FIGURE 1 7 OIL SCHEMATIC...
Page 17: ...13 11 602 Page 7 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Page 18: ...13 11 602 Page 8 DECALS 216EAQ077 206EWD077 222EAQ077 221EAQ077 208EAQ077...
Page 35: ...13 11 602 Page 25 FIGURE 4 2 FLOW CHART FOR SET UP PROGRAMMING...
Page 44: ...13 11 602 Page 34 FIGURE 4 6 CONTROL TUBING SCHEMATIC 206EWD797 A Ref Drawing...
Page 48: ...13 11 602 Page 38 FIGURE 4 10 WIRING DIAGRAM FULL VOLTAGE 202EWD546 REF DRAWING...
Page 49: ...13 11 602 Page 39 FIGURE 4 11 WIRING DIAGRAM WYE DELTA 203EWD546 REF DRAWING...
Page 50: ...13 11 602 Page 40 FIGURE 4 12 AUTO SENTRY ES CONTROLLER DISPLAY...
Page 53: ...13 11 602 Page 43 FIGURE 5 2 FLOW DIAGRAM AIR COOLED 202EWD797 B Ref Drawing...
Page 54: ...13 11 602 Page 44 FIGURE 5 3 FLOW DIAGRAM WATER COOLED 203EWD797 A Ref Drawing...
Page 68: ......
