3. Check to see the humidifier has not been damaged and the installation has not been altered.
4. Clean the fill strainer.
5. Replace the humidifier fuses.
6. Open the supply water shut-off valve.
7. Turn ON the electrical input power to the unit with the external disconnect.
8. Turn the ON/OFF/Drain switch to the “ON” position.
9. Follow the normal start up procedure for humidifier. See the humidifier IOM.
10. Check water make-up valve, lines, cylinder and hoses for leaks, repair if required.
Humidifier Drain Pan
To ensure proper humidifier drainage, inspect the drain pan regularly.
1. Make sure the drain pan outlet is always free of debris and ensure the drain pan does not leak.
2. Check p-trap for proper operation and leaks.
3. Clean out drain pan as needed.
Condensate Pump
The condensate pump should be inspected semi-annually and cleaned.
1. Wipe the float with a wet cloth and detergent to remove dirt.
2. Clean the tank bottom. Remove sump and clean with a stiff nylon brush and flush with water.
3. Check that the discharge line is open, and water can pass through it freely.
4. Check and clear obstructions in gravity lines leading to condensate pump.
5. Check operation of float(s) for free movement.
6. Inspect and clear clogs in discharge check valve and float mechanism.
7. Reassemble and check for leaks.
Fuses
Fuses may occasionally require changing especially with installations where the voltage is not consistent. Drops in
voltage can create brief periods of high amp draw, causing fuses to blow. Always replace fuses with those of the
equivalent rating regarding: 1) amperage, 2) voltage 3) Class and 4) type (fast-acting or time-delay). For instance,
compressors and motors are inductive loads which require time delay fuses where electric reheat, and humidifiers
are resistive loads requiring fast acting fuses.
Reheating Elements
Reheating elements do not normally require maintenance. However, they may accumulate a film of dust or dirt
when unused for extended periods of time. When energized, the burning debris can create smoke or an unpleasant
odor. To help avoid a problem, periodic cleaning is recommended.
Refrigerant Filter Drier
Factory installed refrigerant filter driers do not require maintenance or replacement unless the system has been
opened. When replacing compressors or other repairs that open the refrigeration system to the atmosphere, it is
always advisable to replace the filter drier. The equivalent type and size should be used.
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