UV-SVN002-EN
45
Maintenance
steps in reverse order, remembering
the pitch of the drain pan.
Removal of the Fanboard &
Coil Cleaning
The unit ventilator fan board can be
removed for service to the blower
motor and fan wheels. The fan board
must also be removed for easier access
to the unit coils for cleaning and main-
tenance. Utilize the following steps for
proper removal of the fanboard.
1. Turn off power to the unit and remove
the front panel.
2. Remove the front air grille and filter
from the unit (As seen in
Figures 48-
49
).
3. Unplug the fan motor from the
controls package and remove
crossover wiring from the clips on
the fanboard. Some sensor wiring or
tubes may also have to be removed
to allow fanboard removal. Take note
of where these sensors are located
and replace them when reinstalling
the fanboard.
4.
For Units with Face & Bypass
options only:
Before removing the
fanboard, the drain pan must be
removed (Figures 50-52). AFter the
drain pan has been removed,
proceed to Step 5.
5. Remove the 2 screws at the lower
corners of the fan deck to release it.
(
Figure 53
)
6. Slide the fan board forward to
remove from the unit (
Figure 54
).
CAUTION:
The fan board may need
to be supported to prevent it from
sliding forward and falling out of the
unit.
7. When reinstalling, use the same
steps in reverse order.
Lubrication: Fan Shaft
One fan shaft bearing is mounted on
the right end of the fan board. This
sleeve-type bearing has an inner sur-
face of sintered bronze which allows oil
to flow from the built-in reservoir to the
bearing surface without the use of
grooves or holes in the inner bearing
surface. Do not alter the inner bearing
in any way.
Fill the bearing reservoir every six
months with a No. 10 SAE, non- deter-
gent, automotive type oil. Use a pres-
sure oiler. Add oil until seepage is
noted between the bearing and fan
shaft.
Lubrication: Motor Bearings
Motors are permanently lubricated and
do not require any further oiling.
Figure 53:
Loosen the four bolts (2 & 2) at
either end of the fan board to begin board
removal.
Figure 54:
Slide fan board forward to
remove.
Содержание UV-SVN02B-EN
Страница 32: ...32 UV SVN002 EN Wiring Diagrams Figure 38 Field Installed Controls 120V 1 Speed Unit Mounted Fan Switch...
Страница 33: ...UV SVN002 EN 33 Wiring Diagrams Figure 39 Field Installed Controls 120V 2 Speed Unit Mounted Fan Switch...
Страница 36: ...36 UV SVN002 EN Wiring Diagrams Figure 42 Power Diagram For 208V or 240V 3 Phase 3 Wire Electric Heat...
Страница 38: ...38 UV SVN002 EN Wiring Diagrams Figure 44 Power Diagram For 480V 3 Phase 4 Wire Electric Heat...
Страница 39: ...UV SVN002 EN 39 Wiring Diagrams Figure 45 End Device Package 120V 4 Pipe Hot Water Chilled Water...
Страница 40: ...40 UV SVN002 EN Wiring Diagrams Figure 46 End Device Package 120V Hot Water DX Cooling...
Страница 41: ...UV SVN002 EN 41 Wiring Diagrams Figure 47 208V or 240V 3 Phase 3 Wire Electric Heat DX Cooling...
Страница 50: ...50 UV SVN002 EN Accessories Wall Boxes Figure 59 Vertical wallbox V1 V3 V2 V6 dimensions...