FCM/A5, FEV, FJM, FEM4, FHMA5, FMA4/5, FM(C,U)5, FS(A,M,U)4, FTMA5, F(V,X)M4, F5M4, REM4, WA(H,M,P,X) WB(G,H)L, WC(G,H)L: Service and Maintenance
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
26
for reassembly. The blower motor and wheel may be cleaned by
using a vacuum with a soft brush attachment.
8. Remove grease with a mild solvent such as hot water and detergent.
Be careful not to disturb balance weights (clips) on blower-wheel
vanes. Also, do not drop or bend wheel, as balance will be affected.
To reassemble blower:
1. Place blower wheel back into housing. Be sure to position correctly
for proper location.
2. Reassemble cutoff plate to housing using identified holes from
disassembly procedure.
3. Position motor and mount in same position as when blower housing
was in unit. Secure motor mount on housing, using removed bolts.
Make sure mount or motor is grounded to blower housing.
4. Locate blower wheel setscrew over flat on motor shaft. Rotate
wheel in housing. It should not rub housing and should be centered
in inlet opening. If not, loosen setscrew and align as necessary.
5. Attach green wire to blower housing with screw.
6. (If applicable). Secure motor capacitor under strap and tighten strap
screw.
7. Slide blower assembly to blower deck. Be sure (once blower is
within the unit casing) to force blower assembly toward control box
while sliding assembly into unit to ensure that blower assembly
engages deck properly.
8. Fasten blower assembly to deck with screws previously removed.
9. Reconnect electrical leads to fan coil control.
10. Reconnect electrical power to unit and test fan for proper rotation.
FF1E, FFMA, FMA
The minimum maintenance requirements for this equipment are as
follows:
1. Inspect and clean or replace air filter each month or as required.
2. Inspect cooling coil, drain pan, and condensate drain each cooling
season for cleanliness. Clean as necessary.
3. Inspect blower motor and wheel for cleanliness each heating and
cooling season. Clean as necessary.
4. Inspect electrical connections for tightness and controls for proper
operation each heating and cooling season. Service as necessary.
5. FMA5 units only—verify dissipation system is in normal
operation by verifying the status LED on the control board is
Steady ON and not blinking or OFF.
Air Filter
The air filter should be replaced as needed.
NOTE: Refer to the installation instructions and product data for filter
dimensions. 2023 product has been designed to accommodate common
sized filters.
Cooling Coil, Drain Pan, and Condensate Drain
The cooling coil is easily cleaned when it is dry. Inspect coil and clean
(if necessary) before each cooling season. To check or clean cooling coil,
remove blower/heater access panel to gain full access to cooling coil. If
coil is coated with dirt or lint, vacuum with a soft brush attachment.
Be careful not to bend coil fins. If coil is coated with oil or grease, clean
it with a mild detergent and water solution. Rinse coil with clear water.
Be careful not to splash water onto insulation.
Inspect drain pan and condensate drain at same time cooling coil is
checked. Clean drain pan and condensate drain by removing any foreign
matter from pan. Flush pan and drain tube with clear water.
If drain tube is restricted, it can generally be cleared by high-pressure
water. Cut plastic line and work outside condensate pan and away from
coil to clear drain tube.
NOTE: There MUST be a trap in the condensate line. The trap must be
at least 3-in. deep, not higher than the bottom of unit condensate drain
opening, and pitched downward to an open drain or sump.
Blower Motor and Wheel
Clean blower motor and wheel when cooling coil is cleaned.
To clean or service wheel or motor, proceed as follows:
1. Pull unit disconnect (when used) and remove blower access panel.
2. Disconnect motor electrical leads from control box and capacitor.
Mark location of wires for reassembly.
3. Remove the three bolts holding motor mount to blower housing
while supporting motor shell with hand.
4. Pull motor inlet ring and blower wheel assembly out of blower
housing.
5. With blower wheel, inlet ring, and motor mount still attached to
motor, place motor on flat, horizontal surface, shaft up. Mark
position of wheel on motor shaft for reassembly.
6. Loosen blower wheel setscrew and remove blower wheel from
motor shaft.
NOTE: Further disassembly of motor and mount is not necessary as
adequate clearance is available to clean motor.
7. Clean blower motor and wheel using a vacuum with a soft brush
attachment. Remove grease with a mild solvent such as hot water
and detergent. Be careful not to disturb balance weights (clips) on
blower wheel vanes. Do not drop or bend wheel as balance will be
affected.
To reassemble unit, proceed as follows:
1. Place motor with mount attached on flat, horizontal surface with
shaft up.
2. Set inlet ring on top of motor mount grommets. Center inlet ring
flush on all three grommets.
3. Slide blower wheel onto motor shaft with setscrew upward and
aligned with shaft flat portion. Vertically position wheel along shaft
to position marked during disassembly.
NOTE: If previous shaft was not marked or if replacing previous motor,
set blower wheel position by sliding blower wheel along motor shaft to
1-1/8-in. above rubber grommets (Fig. 23).
4. Hold blower wheel in place and carefully tighten setscrew.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing and gloves when handling parts.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
Never operate unit without a filter.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
Do not use caustic household drain cleaners in the condensate pan or
near the coil. Drain cleaners can quickly destroy a coil.
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