Van Air Systems AC 140 to 220 - Manual (Page 5)

PRINTED IN THE U.S.A. PAGE 5
INSTALLATION SECTION 4
FIGURE 4 SEPARATOR DETAILS
AFTERCOOLER
AC-140 & AC-150
AC-160 thru AC-180
AC-190 thru AC-220 SEPARATOR
S-60-M
S-170-M
S-260-M PART NO.
83-0747
83-0748
83-0749 PART NO.
83-0751
83-0752
83-0752 DRAIN
FD-1
FD-2
FD-2
MODEL
S-60-M
S-170-M
S-260-M A
18.60"
23.00"
30.50"
B
6.00"
7.75"
13.75"
C
2.60"
3.00"
7.25"
D
2" NPT
3" NPT
4" NPT
MWP
(PSIG)
250
250
250
MAX
650
1700
3500
MIN
100
260
1500
FLOW (SCFM)
E
1/2" NPT
1/4" NPT
3/4" NPT
4.6 SEPARATOR INSTALLATION
CAUTION
WHEN INSTALLING THE SEPARATOR, NEVER REDUCE THE
PIPING SIZE BETWEEN THE AFTERCOOLER AND SEPARATOR.
THIS MAY CAUSE INADEQUATE DRAINING OF THE
AFTERCOOLER AND POSSIBLE BACK PRESSURE OR
INCREASED PRESSURE DROP.
IF THE SEPARATOR DRAIN IS TO BE CONNECTED INTO A
REMOTE OR COMMON DRAIN LINE, MAKE SURE THAT IT IS
VENTED.
THE DISCHARGE FROM THE SEPARATOR MAY CONTAIN
COMPRESSOR LUBRICANTS. COMPLY WITH ALL
REGULATIONS CONCERNING DISPOSAL OF SUCH FLUIDS.
When the system air is cooled by the aftercooler, moisture in the
compressed air condenses and accumulates in the outlet of the
aftercooler. To efficiently remove this liquid from the air system, a
separator with a float drain must be installed immediately downstream of
the aftercooler.
Install the separator as outlined in the Installation, Operation, and
Maintenance Instructions supplied with the component. If a separator was
not ordered with the aftercooler, one can be ordered from your VAN AIR
distributor.
4.7 ELECTRICAL CONNECTIONS
CAUTION
TURN OFF MAIN POWER SUPPLY BEFORE WIRING TO THE
AFTERCOOLER.
MAKE SURE THAT ALL USER SUPPLIED WIRING IS
PROPERLY SIZED TO HANDLE THE AMPERAGE REQUIRED
BY THE AFTERCOOLER AND ANY ADDITIONAL EQUIPMENT.
WHEN WIRING TO THIS UNIT AND ANY OTHER ELECTRICAL
COMPONENTS, ALWAYS COMPLY WITH THE NATIONAL
ELECTRICAL CODE AND ALL APPLICABLE FEDERAL, STATE
AND LOCAL CODES.
IF THE AFTERCOOLER IS TO BE INSTALLED OUTDOORS OR
IN AN EXTREMELY HUMID ATMOSPHERE, MAKE SURE THAT
ALL WIRING AND COMPONENTS ARE PROPERLY RATED.
VERIFY THAT THE POWER SOURCE MATCHES THE
AFTERCOOLER ELECTRICAL REQUIREMENTS BEFORE
MAKING ANY CONNECTIONS. REFERENCE EQUIPMENT
DATA TAG AND FIGURE 4 FOR INFORMATION.
TO PREVENT POSSIBLE ELECTRICAL SHOCK, IT IS
IMPORTANT THAT THIS UNIT IS GROUNDED. ALWAYS USE
THE PROVIDED GROUNDING SCREW.
The aftercooler electrical requirements are listed on the
equipment data tag and in Figure 5. Remove the cover from
the electrical junction box on the aftercooler motor. Using
FIGURE 5 as reference, make the necessary wiring connec-
tions. Several ways to wire the unit are listed below. Make the
connections for the pertinent application(s).
1. DEDICATED POWER SUPPLY AND DISCONNECT
Install a properly sized fused disconnect before the
aftercooler. Make the necessary wire connections and re-
install the junction box cover.
2. INTERLOCKED WITH COMPRESSOR MOTOR STARTER
The aftercooler can be interlocked with the air compressor
starter. This allows the aftercooler to operate only when the
air compressor is operating.
If a set of auxiliary, normally open contacts is available on
the air compressor magnetic starter, make necessary wiring
connections from the contacts to the aftercooler.
If a set of auxiliary contacts is not available, use a properly
sized contactor. Wire the contactor's holding coil in parallel
with the air compressor starter holding coil. Make the
necessary wiring connections from the contactor to the
aftercooler.
4.7-1 FAN MOTOR ROTATION
The rotation of the fan motor(s) is important. Units with 3
phase power should be checked for proper rotation after
installation.
Energize the unit. Observe the rotation and air flow direc-
tion. Reference Section 3.2 for air flow direction. If the
fan(s) do not push the air across the core, turn off the unit
and switch the wiring as outlined in Figure 6.