Van Air Systems AC 50 to 130 - Manual (Page 5)

PRINTED IN THE U.S.A. PAGE 5
INSTALLATION SECTION 4
FIGURE 4 SEPARATOR DETAILS
MODEL
S-10-AD
S-20-M
S-30-M A
10.00"
12.10"
16.10"
B
4.75"
4.38"
4.38"
C
1.00"
2.30"
2.30"
D
1" NPT
1" NPT
1-1/2" NPT
E
1/8" NPT
1/4" NPT
1/4" NPT
MWP
(PSIG)
250
250
250
MAX
120
160
400
MIN
11
11
60
FLOW (SCFM)
AFTERCOOLER
AC-50 thru AC-90
AC-100 & AC-110
AC-120 & AC-130 SEPARATOR
S-10-AD
S-20-M
S-30-M PART NO.
83-0744
83-0745
83-0746 DRAIN
FD-1
FD-1
FD-1 PART NO.
83-0751
83-0751
83-0751
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. If there are any discrepan-
cies between the data tag and Figure 5, use the information on
the tag.
Remove the cover from the electrical junction box on the
aftercooler motor. Using FIGURE 5 as reference, make the
necessary wiring connections. 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 direction.
Reference Section 3.2 for air flow direction. If the fan(s) do
not pull the air across the core, turn off the unit and switch
two of the main power legs.
4.6 SEPARATOR INSTALLATION
CAUTION
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 an FD-1 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.