Reznor DV Operation Manual (for units built before August 2003) - Manual (Page 7)

Form O-DV/RDF/ADF, P/N 148385, Page 6
6. Replace media by sliding media pads over both support rails until back
stop is encountered. Media must be placed as shown in FIGURE 7.
7. Center screen on the incoming air side of the media.
8. Replace the two side screen retainers by fitting them between the side of
the media pad and the side of the cooling module. The retainers should
fit snugly, pinching the screen against the media pads.
9. Replace the bottom pad retainer by securing the retainer between the pad
and the reservoir pan. Fasten with the three sheet metal screws removed
in Step 2.
10. Replace the top pad retainer by securing the retainer between the pad
and top of the cooling module. Fasten with the three sheet metal screws
removed in Step 1.
MAINTENANCE SECTION (cont'd)
7. Optional Evaporative Cooling Module (ADF/ADFH only) (cont'd))
Instructions for Replacing
Evaporative Cooling Media
(cont'd)
45°
Airflow
to Space
Outside
Airflow
Pad
Screen
Pad
Retainer
Screw
FIGURE 6 - Removal and Replacement of
Evaporative Cooling Module Media
FIGURE 7 -
Media must be
installed
with 45°
angle sloping
downward
toward the
incoming outside
air.
IMPORTANT: The
media is made up of two
different sheets of cooling
material. Each sheet has its own unique angle.
When replacing the cooling media, BE CERTAIN
that the 45° angle slopes downward toward the
incoming outside air (as illustrated above). If the
media is not installed properly, water blowoff from
the media pads will occur.
Water Feed Line and PVC Distribution Piping - Annually, the water supply
line and PVC water distribution pipe should be flushed of debris and contami-
nants.
1. Remove the media pads following the media replacement instructions.
2. Remove the water feed line from the downstream side of the ball valve
and unscrew the water bleed line barbed hose fitting.
3. Force a fresh water supply through the water inlet hose and thoroughly
flush the distribution pipe.
4. Reassemble being careful to install media with air flow direction as shown
in FIGURE 7.
Water Pump and Inlet Basket Screen (applies to system with float and pump
control) -- Annually, the pump and inlet basket screen should be removed,
disassembled, and cleaned.
WARNING: Do not expose pump motor or any part of the
electrical box to water. Evaporative cooling pump is NOT
submersible.
1. Disconnect the power supply to the unit.
Other Evaporative
Cooling Module
Maintenance