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Fan Motor Starter
When starter is factory-installed, it is wired to the motor and fully
tested before shipping. Before proceeding, open the starter cover
and fan section access door to check for any damage.
WIRING
1. Select a suitable location for the field power supply
source; top is preferred.
2. Before drilling any hole, be sure the hole and any field-
supplied conduit fittings will not interfere with the door
or components inside the enclosure.
3. Drill the appropriate size hole and connect the field-
supplied conduit to the enclosure.
4. Refer to the wiring diagram supplied with the starter and
connect the line voltage power source to the line voltage
terminals (L1, L2, L3) as shown.
5. Refer to the factory-supplied voltage warning label and
verify that the power source is correct.
6. Connect the grounding wire to the grounding lug provid-
ed on the bottom of the starter.
NOTE: For remote control operation (AUTO position), fire/
smoke shutdown, or shutdown on coil freeze protection, a sec-
ond conduit should be used to connect these control functions.
IMPORTANT: This starter is designed to stop the equip-
ment in both HAND and AUTO positions if either a fire/
smoke or coil freeze condition is detected.
7. Select a location at the bottom of the starter near the
control terminal block.
8. Before drilling any hole, be sure the hole and any field-
supplied conduit fittings will not interfere with the door
or components inside the enclosure.
9. Drill the appropriate size hole and connect the field-
supplied conduit to the enclosure.
10. If a smoke detector or remote fire shut down is provided
(field-supplied), remove the factory-supplied jumper be-
tween terminals 1 and 2 in the starter. Connect the nor-
mally closed, isolated dry contact from the smoke detec-
tor or fire system to these terminals.
11. If a coil freeze detection thermostat is provided, remove
the factory-supplied jumper between terminals 1 and 2 in
the starter. Connect the normally closed contact from the
low temperature thermostat to these terminals.
12. For remote start/stop operation (when the HOA [hand/
auto/off] switch is placed in the AUTO position), connect
a field-supplied, normally open isolated dry contact be-
tween terminals 3 and 4. This contact must be suitable for
at least 3 amps at 120 vac.
START-UP AND TEST
Before applying power to the starter, verify that the motor over-
load inside the starter is set to the full load amperage (FLA or
RLA) specified on the motor nameplate.
IMPORTANT: Many starters contain a multi-tap
trol transformer. The line voltage tap on the control trans-
former must be set in the field. For starters operating at
200/230-50 Hz, 208/230-60 Hz, or 380/400/415-50 Hz,
the line voltage tap on the control transformer must be set
to the appropriate line input voltage.
1. Set the HOA switch on the front of the starter to the OFF
position.
2. Verify that the fan can freely rotate and remove any loose
items inside the fan section.
3. Close and secure the fan access door or panel and the
starter door cover.
4. Apply power to the starter.
5. Set the HOA switch in the HAND position and verify that
the fan operates.
For 3-phase motors:
Place the switch back in the OFF position and carefully
open the fan access door.
Verify that the fan wheel is rotating in the proper direc-
tion. If it is not, remove power and reverse any two of the
line voltage connections at the starter terminals (L1, L2,
L3).
6. With the fan operating and the starter in the HAND posi-
tion, verify that each safety or limit switch functions
properly.
7. Repeat Step 6 with the switch in the AUTO position and
the remote contact energized.
Disconnect
When disconnect is factory-installed, it is wired to the motor, and
fully tested before shipped. Open the disconnect cover and fan
section access door to check for damage before proceeding.
DISCONNECT WIRING
1. Connect the field line voltage power source to the top of
the disconnect (knockouts are provided).
2. Remove the knockouts as required to accommodate the
field-supplied conduit.
3. Refer to the wiring diagram supplied with the unit and
connect the line voltage power source to the line voltage
terminals (L1, L2, L3) as shown.
4. Refer to the factory-supplied voltage warning label and
verify that the power source is correct.
5. Connect the ground wire to the grounding lug provided in
the disconnect.
START-UP AND TEST
1. Set the disconnect switch to the OFF position.
2. Verify that the fan can freely rotate and remove any loose
items inside the fan section.
3. Close and secure the fan access door and the disconnect
door cover.
4. Apply power.
5. Set the disconnect switch to the ON position and verify
that the fan operates.
For 3-phase motors:
Place the switch back in the OFF position and carefully
open the fan access door.
Verify that the fan wheel is rotating in the proper direc-
tion. If it is not, remove power and reverse any two of the
line voltage connections at the starter terminals (L1, L2,
L3).
NOTE: For fused type disconnects, blown fuses MUST be
replaced with the same type and size originally supplied.
VFD
con-
When variable frequency drive (VFD) is factory-installed, it is
wired to the motor and fully tested before shipment. Drive pro-
gramming is also done at the factory, including electronic over-
load, which is programmed for the motor FLA. Refer to Tables 37
and 38.
Open the VFD front cover and the fan section access door to
check for any damage before proceeding.
WIRING
1. Select a suitable location in the bottom of the VFD to
connect field-supplied power source.
148
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