Installation and Maintenance Manual

106 UNT-SVX07D-EN
Maintenance
Maintenance Procedures
Perform the following maintenance procedures to ensure
proper unit operation.
Air Filters
Change or clean air filters at least twice a year. Filters
require more frequent care under high load or dirty air
conditions since a clogged filter reduces airflow. Table 1,
p. 12 lists filter size and quantity by unit size. Throwaway
and pleated media filters are available for all units. Follow
the instructions below to replace the disposable filters.
All Models Except Vertical Cabinets
Remove the front panel of the vertical recessed unit and
open the bottom panel door of the horizontal cabinet and
horizontal recessed unit to access the filter. The front panel
of the vertical cabinet unit does not require removal to
change the filter.
Note: Vertical recessed, horizontal cabinet, and
horizontal recessed units with a bottom return have
filter guides to secure the filter in position. Also, if
these unit types have a fresh air opening, they
require an additional filter for the fresh air opening.
Inspecting and Cleaning Drain Pans
Clean the fan-coil unit’s main and auxiliary drain pans to
ensure the unit drains condensate properly.
Check the condensate drain pan and drain line to assure
the condensate drains properly at least every six months
or as dictated by operating experience.
If evidence of standing water or condensate overflow
exists, immediately identify and remedy the cause.
Clean the drain pans of any moisture or debris.
Auxiliary Drain Pan
1. To remove the auxiliary drain pan, loosen the hose
clamp (installer supplied) around the drain connection
collar and disconnect the drain line.
2. Remove the overflow drain line to the auxiliary drain
pan if it was installed.
3. Remove the condensate overflow sw
itch option from
the auxiliary drain pan.
4. Slide the pan horizontally tow
ards the end of the large
groove of the mounting slots in the chassis end panel
and remove pan from unit (see Figure 37).
WARNING
Live Electrical Components!
During installation, testing, servicing and
troubleshooting of this product, it may be necessary to
work with live electrical components. Have a qualified
licensed electrician or other individual who has been
properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical
components could result in death or serious injury.
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could
result in death or serious injury.
For additional information regarding the safe discharge of
capacitors, see PROD-SVB06A-EN
NOTICE:
Replace All Panels and Filters Properly!
All unit panels and filters must be in place prior to unit
startup. Failure to have panels and filters in place could
result in equipment damage.
Figure 37. Insert the auxiliary drain pan tabs into these
slots in the fan-coil’s chassis end panel
(horizontal unit shown).
Aux. Drain Pan Attaches to These Slots
UNT-SVX07_-EN.book Page 106 Friday, April 27, 2012 9:40 AM