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13–11–602 Page 27
Unit Setup Adjustments
1.
In the top line, “OIL CHANGE INTERVAL” is dis-
played. The bottom line will indicate a time interval
of 1000 to 8000 hours. After the machine has run
for the programmed setting, an advisory will be
displayed, requesting an oil change. Adjust as de-
sired and press [ENTER] to proceed.
2.
In the top line, “FILTER CHNG INTERVAL” is dis-
played. The bottom line will indicate a time interval
of 1000 to 8000 hours. After the machine has run
for the programmed setting, an advisory will be
displayed, requesting an oil filter change. Adjust
as desired and press [ENTER] to proceed.
3.
In the top line, “HI TEMP LIMIT” is displayed. The
bottom line will indicate 190 degrees F. This is the
maximum (and proper) setting for compressor op-
eration. It may be temporarily lowered to verify the
function of the temperature shutdown system.
4.
In the top line, “SYSTEM VOLUME” is displayed.
The bottom line may be selected as “SMALL”,
“MEDIUM”, or “LARGE”. This tunes the response
of the modulation control loops to optimize loop
stability. It is factory set to MEDIUM. Set as fol-
lows:
SMALL if estimated volume is less than .25 gallon
per CFM.
MEDIUM if estimated volume is between .25 and
1.0 gallon per CFM.
LARGE if estimated volume is greater than 1.0
gallon per CFM.
Note: The setting of this parameter is not critical.
When set to the most appropriate value, the controller
will maintain the discharge at the closest possible val-
ue. If not set correctly, pressure will vary from the de-
sired setpoint to a somewhat greater degree, but the
compressor and its components will not be adversely
affected.
5.
In the top line, “AUTO RESTART” is displayed.
The bottom line will indicate either “OFF” or “ON”.
Set this feature to ON when it is necessary to have
the compressor automatically restart after a pow-
er interruption. This feature shall only be enabled
when the owner determines that it is safe to do so.
It is recommended that compressor access be
limited to only trained service personnel when this
feature is used.
6.
This step is only encountered if the AUTO RE-
START function was set to ON in step 13. In the
top line, “RESTART TIME” is displayed.
The bottom line will indicate a time between 5 and
60 seconds. It is factory set at 10 seconds. This
is the amount of delay introduced before restarting
after power has been restored.
7.
The display now reads “JOG MOTOR?” and indi-
cates the amount of time to energize the starter.
Adjust with the [+] or [–] key to the smallest value
needed to bump the motor and check rotation. 0.1
to 0.2 seconds is normally adequate for factory–
furnished full–voltage starters; wye–delta or re-
mote starters may require a little more time. Set
back to zero to proceed to the next step.
8.
In the top line, “AUX SD MESSAGE” is displayed.
The bottom line will display the message which will
appear if power is removed from terminal 7. Se-
lect the most appropriate message for user–fur-
nished shutdown devices, and press [ENTER] to
proceed.
9.
This completes the unit setup adjustments. The
controller will return to the main adjustments
menu.
SEQUENCING COMPRESSORS WITH THE AUTO
SENTRY
–ES
Sequencing compressors with the AUTO SENTRY
–
ES controller is as simple as plugging in a telephone to
a wall jack. The only item required to make the system
functional is a standard telephone cable identical to
cables that connect nearly every telephone to its wall
jack. One less cable than the number of compressors
to be sequenced is required. For example, to se-
quence four compressors, three cables are required.
A kit, 200EAP752, is available which contains all mate-
rial needed to sequence up to five compressors. This
kit contains 500 feet of cable, eight modular connec-
tors, and a crimping tool to install the connectors.
The “AUTO SENTRY
–ES” controller makes se-
quencing within a multi-compressor system simple, re-
liable and trouble-free.
Installation
A proper sequencing installation requires two or more
Gardner Denver rotary air compressors complete with
“AUTO SENTRY
–ES” controllers, piped into a com-
mon air system, interconnected as described above.
For best performance, the units must be piped directly
to the receiver, without any intervening check valves,
dryers, or other restrictions. The receiver should also
be sized to prevent excessive drops or rapid rises in
pressures during the operation as described below. All
standard practices common to sound air compressor
installations such as proper sizing of discharge piping,
proper electrical supply and conductor sizing, and
grounding are to be observed. The serial communica-
tions interface meets RS–485 standards, the most
widely used interface in harsh, industrial environments
today. However it is still recommended that the com-
munications cables be routed through metallic conduit
to provide them with both mechanical protection and
electromagnetic shielding.
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: ......