Fan Motor Starter; Wiring; Start-Up And Test; Disconnect - Carrier Aero 39MN Series Installation, Start-Up And Service Instructions Manual

When starter is factory-installed,
Fan Motor Starter —
it is wired to the motor and fully tested before shipping. Be-
fore proceeding, open the starter cover and fan section ac-
cess 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 pro-
vided on the bottom of the starter.
NOTE: For remote control operation (AUTO position), fire/
smoke shutdown, or shutdown on coil freeze protection, a
second conduit should be used to connect these control
functions.
IMPORTANT: This starter is designed to stop the
equipment 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 provid-
ed (field-supplied), remove the factory-supplied jump-
er between terminals 1 and 2 in the starter. Connect the
normally closed, isolated dry contact from the smoke
detector or fire system to these terminals.
11. If a coil freeze detection thermostat is provided, re-
move the factory-supplied jumper between terminals 1
and 2 in the starter. Connect the normally closed con-
tact from the low temperature thermostat to these ter-
minals.
12. For remote start/stop operation (when the HOA [hand/
auto/off] switch is placed in the AUTO position), con-
nect a field-supplied, normally open isolated dry con-
tact between 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 overload 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
control transformer. The line voltage tap on the control
transformer must be set in the field. For starters operat-
ing at 200/230-50 Hz, 208/230-60 Hz, or 380/400/
415-50 Hz, the line voltage tap on the control trans-
former 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 careful-
ly 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 po-
sition, 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.
When disconnect is factory-installed, it
Disconnect —
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 volt-
age 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 discon-
nect 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 careful-
ly 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.
When variable frequency drive (VFD) is factory-
VFD —
installed, it is wired to the motor and fully tested before
shipment. Drive programming is also done at the factory, in-
cluding electronic overload, 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.
137