HCCA-SVX01A-EN
15
Maintenance
Periodic Maintenance Checklist
The following checklist is provided as a
recommended maintenance schedule.
Detailed instructions for specific
maintenance procedures are given after the
checklist.
WARNING: Disconnect electrical power
source and secure in disconnected
position before servicing the unit. Failure
to do so may result in personal injury or
death from electrical shock.
Monthly Maintenance:
• lnspect the unit air filter. Clean or replace
clogged filter element.
• Check the drain pan to be sure that it is
clean and free to carry the flow of
condensate through the drain line.
Annual Maintenance:
• lnspect the unit casing for corrosin. Clean
or repair in order to provide unit protection.
• lnspect the fan wheel and housing for
damage. Rotate the fan wheel manually
ensuring that no obstructions are blocking
its movement.
• lnspect the coil fins for excessive dirt or
damage. Remove dirt and straighten fins.
• Clean and tighten all electrical
connections.
• Drain and treat the whole system to control
pipe scaling.
CAUTION: The use of untreated or
improperly treated water in this
equipment may result in scaling, erosion,
corrosian, algae or slime. The services of
a qualified water treatment specialist
should be engaged to determine what
treatment if any, is advisable. The Trane
Company assumes no liability for the
results of the use of untreated or
improperly treated water.
Maintenance Procedures
Change/Clean Filters
Change or clean air filters at least twice a
year. Filters will require more frequent care
under high load conditions or dirty air. A
clogged air filter reduces airflow and cooling
capacity, and increases energy
consumption. Permanent (cleanable) or
replaceable filters are acceptable for all
units.
To Remove or Change Filters:
1. Turn off the electrical power source. Allow
the rotating fan wheel to stop.
2. Lossen two screws and brackets at the
rear of return plenum, as shown on Figure
10-A.
3. Pull out the filter and frame from the
return plenum.
4. Follow the opposite procedure to re-install
the filrer and frame.
5. Re-connect the electrical power source.
To clean permanent filters, remove the filrer
from the unit and wash it in water to remove
dust, dirt and lint; allow to dry thoroughly
before re-installing in the unit.
Removing Plenum Box
The return plenum can be removed from the
unit casing by completing the following
steps:
1. Turn off the electrical power source. Allow
the rotating fan wheel to stop.
2. Remove the screw from the junction-box
cover, as shown on Figure 11-E Open the
cover and then remove the motor wires
and power source wires from the terminal
strip.
3. Remove the fastener which tightens the
flexible conduit and junction box together.
4. Pull the flexible conduit with motor wires
out of the junction box and return plenum.
Also remove the power source wires from
the junction box.
5. Remove all screws that fasten the return
plenum and unit casing together, as
shown on Figure 11-B, C and D. And then
the return plenum can be separated from
unit casing.
CAUTION: Due to the dimensions and
weights of the return plenum, at lease
two installers are recommended to do
this step for safely.
6. Follow the reverse procedures to re-install
the return plenun and re-connect all wires.
Make sure that all wire connection are
correct before turning power on.
