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Honeywell HM750A1000
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Clean Drain Valve (2 flashes)
Description
Instructions
First follow the task instructions for replacing the canister... Disconnect spade terminals from the drain valve. 2. Hold the hose connected to the drain valve and pull forward while at the same time pressing on the drain valve locking tab to release the valve body from its mount. See Fig. 30. 3. Disconnect the hose from the drain valve by pulling on the hose. With the valve free of the humidifier it can be disassembled and cleaned. 4. On a work bench or suitable work area, first remove the solenoid from the drain valve using a Phillips screwdriver. See Fig. 31. 5. Pull the solenoid from the core. 6. Using an adjustable wrench, unscrew the core counterclockwise from the drain valve body. 7. Carefully remove the core assembly (this includes the plunger and return spring) from the plastic drain valve body. The plunger seal (rubber stop) can be cleaned using a plastic brush (tooth brush) or damp cloth. Do NOT use a metal brush or chemical cleaning agents as this could damage the part. Fig. 30. Removing the drain valve. 8. Rinse the valve body with cold water to clean any internal debris. 9. Once the valve is clean, reassemble by performing the above procedure in reverse. When fitting the core back on the drain valve body, do NOT overtighten. Thread the core back onto the drain valve body by hand. When the core is fully threaded by hand, tighten 1/4 additional turn with an adjustable wrench. 10. Reinstall the drain valve in reverse order to its removal. Be sure the hose connected to the drain valve is tucked back in position within the housing so it does not interfere with cylinder reinstallation.
Task Type
Preventive
Inspection
Clean
Repair
Modify
Takes asset out of service
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