Reznor AS3, Руководство пользователя

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14 OPT-AS3,4,5,8 (07-22) 160202-B
MAINTENANCE—CONTINUED
Media Maintenance
• Over time, excessive amounts of mineral deposits will begin to build up on the media. Annually, scale and dirt
should be washed off the entering surface of the media.
• Remove the pad retainers and screen. Clean the media using a garden hose, mild soap, and a soft bristled brush.
• When the media becomes too clogged with mineral deposits and dirt that it cannot be cleaned, the pads should
be replaced (refer to
Installation/Replacement of Media Pads
section). The average pad life is approximately
three cooling seasons. Select the correct replacement part numbers (refer to Table 4 ) and order replacement
media pads through your Distributor.
Table 4. Evaporative Cooling Module Media Pads
Size (Inches)
Cellulose Glass Fiber
Quantity
PN
48 × 12 × 6 107190 107199
4
48 × 12 × 12 107194 107201
48 × 8-5/8 × 6 107191 107200
1
48 × 8-5/8 × 12 107195 107202
Flushing Water Lines
•
Annually, the water supply line, the PVC water distribution pipe, and the bleed line should be flushed of debris
and contaminants.
•
Remove (and replace) the media pads in accordance with the
Installation/Replacement of Media Pads
section.
Remove the water feed line from the downstream side of the ball valve and unscrew the water bleed line barbed
hose fitting.
•
Force a fresh water supply up through the water inlet hose and thoroughly flush the distribution pipe.
Water Pump Maintenance
⚠ DANGER ⚠
• Disconnect all power to the unit before doing any maintenance. Failure to do so may cause
electrical shock, personal injury, or death.
• Do not expose pump motor or any part of the electrical box to water. Evaporative cooling pump
is NOT submersible.
Annually, the water pump and inlet basket screen should be removed, disassembled, and cleaned as follows:
1. Disconnect power supply to unit.
2. Remove junction box door and disconnect two power supply wires from terminal block inside junction box (see
Figure 16 ).
3. Disconnect water feed line hose from upstream side of ball valve.
4. Remove four sheet metal screws that secure junction box to cooling module and remove junction box/pump/float
switch assembly (see Figure 16 ).
5. Dislodge inlet basket screen from pump and clean any buildup of debris and dirt.
6. Carefully remove basket and snap-on base cover plate from bottom of pump and wash all deposits from inside
pump using mild soap solution.
7. Remove all debris from impeller.
8. Reassemble pump, replacing parts in exact reverse order and ensuring that everything is returned to its proper
position.