Reznor ADFH Operation Manual - Manual (Page 7)

Form O-ADF/RDF, P/N 148385R2, Page 7
45°
Airflow
to S
pace
Out
side Airflow
Media Pads
Screen
Screen Retainer
Top Pad
Retainer
Screw
Bottom Pad
Retainer
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.
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 cool-
ing 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 sheetmetal 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 sheetmetal screws removed in Step 1.
Other Evaporative
Cooling Module
Maintenance
REFERENCE:
Evaporative
Cooling Module
Troubleshooting Guide,
Paragraph 3.9, page 19,
Chart 2.
Water Feed Line and PVC Distribution Piping - Annually, the water supply line and
PVC water distribution pipe should be flushed of debris and contaminants.
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 con-
trol) -- 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.
FIGURE 8 - Remove
Junction Box, Pump
and Float Switch as an
Assembly
Pump
Motor
Pump with mesh screening over inlet
Float
Switch
Junction Box (Note: Only 208V
unit will have a transformer in
the junction box.)