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ELECTRODE WIRE REPLACEMENT
1 . Remove front panel (see FIGURE 2) .
2 . Remove side panel (see FIGURE 2) .
3 . Remove the electrode wires (see FIGURE 3A and FIGURE 3B) .
a . For units with one circuit board: Use needle nose pliers to pull the
spade connectors off spade terminals J8 and J10 on the circuit board .
b . For units with two circuit boards: Use needle nose pliers to pull the
spade connectors off the spade terminals on the power relay .
4 . Ensure the two replacement electrode wires (Part #5372) have "O"
shape connectors (see FIGURE 4B) . Do not use replacement wires
with "D" shape connectors (see FIGURE 4A) .
5 . Attach the new electrode wires (see FIGURE 3A and FIGURE 3B) .
a . For units with one circuit board: Use a pair of needle nose pliers to
attach the spade connectors to the spade terminals J8 and J10 on
the circuit board . Electrode wires are interchangeable and can be
placed on either of the two terminals .
b . For units with two circuit boards: Use a pair of needle nose pliers to
attach the connectors to the spade terminals on the power relay . One
wire, either one but not both, must go through current-sensing
toroid (see FIGURE 3A) . Electrode wires are interchangeable and
can be placed on either of the two terminals .
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FILL VALVE SERVICE
1 . Disconnect water supply line from fill valve inlet (see FIGURE 5) .
2 . Remove in-line strainer from the fill valve inlet port using a #8 or #10
sheet metal or wood screw with a minimum length of 0 .5" .
3 . Clean or replace in-line strainer (Part #4358) .
4 . Reconnect water supply line to fill valve inlet (see FIGURE 5) .
RESTORE UNIT TO SERVICE
1 . Replace side panel if removed (see FIGURE 2) .
2 . Replace front panel (see FIGURE 2) .
3 . Inspect drain hose to make sure it is not blocked and has constant
downward slope . Clean or replace if necessary .
4 . Inspect and clean condensate pump (if used) .
5 . Inspect steam hose to make sure it has no low spots and has constant
upward slope from humidifier to dispersion tube in duct . If dispersion
tube is mounted below humidifier, inspect drip tee and drain trap .
6 . Restore main electrical power to humidifier at circuit breaker .
7 . Turn humidifier on and verify green On/Off light is illuminated (see
FIGURE 2) .
8 . Check system operation and inspect all plumbing connections and piping
for signs of cracks or leaks .
- 15 -
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