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FIGURE 2–5 – INSTALLATION FOR COLD WEATHER OPERATION
5.
Monitor the unit carefully during start–up and op-
eration to be sure it is functioning normally.
6.
Use NEMA 4 enclosure for electrical devices.
Extreme Cold Weather Operation (Down To –40
_
F.)
– In addition to recommendation for +10
_
F. installa-
tions, the following should be provided:
1.
A temperature switch to control the fan should be
provided for better starting and quicker warm–up.
This switch can be provided from the factory and
will delay fan start–up until the discharge tempera-
ture reaches approximately 150–160
_
F.
2.
It will probably be necessary to provide shutters or
to block off part of the cooler in some manner
since the cooler is greatly oversized for operation
in these low temperatures. Shutters are not a fac-
tory option.
3.
Auto operation should not be used in extreme en-
vironments.
4.
Coolers should be located as close to the unit as
possible. Long lines to and from the cooler only
further complicate the circulation of oil flow on cold
starts. Heat tape and insulation may be required
on oil lines.
5.
Some means of providing heat to the oil reservoir
and cooler during shutdown should be provided.
There are various methods to accomplish this, but
since openings are not provided for sump heaters,
the use of radiant heaters is recommended. Heat-
ers should be sized to provide at least a +10
_
F.
environment for the coolers, motor, and sump.
FIGURE 2–5 shows how these might be located
in a typical installation and sizes required.
Remember unsheltered (outside) installations should
be avoided where possible. Installation next to a heated
building where enough heat can be used to keep the
compressor room above freezing will save many com-
plications in the operation and installation of the unit.
CONTROL PIPING – Control piping is not necessary
since the Electra–Saver
R
unit is factory–wired and
piped for the control system specified.
INLET LINE (FIGURE 2–6) – 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 entering the compressor. If welded
construction is used, the line must be shot blasted
and cleaned to remove welding scale. In either
case, the inlet line must be coated internally by galva-
nizing or painting with a moisture and oil–proof sealing
lacquer. The inlet line should be the full size of the inlet
Length of Inlet Line
Diameter of Pipe Size
0 to 10 Feet
Same as Compressor Inlet Opening
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 to 17 Feet
One Size Larger Than Inlet Opening
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 to 38 Feet
Two Sizes Larger Than Inlet Opening
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURE 2–6 – INLET LINE LENGTHS
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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