Nortec Steam Humidifiers manual Mandatory Cleaning Of The Drain Valve, Extended Shutdown

3.This color-coding must be adhered to when replacing cylinder plugs on pins.

4.The electrode plug with the orange wire always goes on the single pin surrounded by a plastic shoulder.

5.Ensure that cylinder plugs fit snugly on the pins.

6.If a cylinder plug becomes loose the cylinder harness must be replaced (P/N 158-1305 see parts list).

MANDATORY CLEANING OF THE DRAIN

VALVE

Always clean the drain valve before installing a new cylinder since the valve port may be as dirty as the used cylinder.

1.Note the ring terminal for drain valve green ground wire is sandwiched between the drain valve body and drain pan.

2.Remove the two screws securing drain valve body to the drain pan. Disconnect the two slip-on terminals from the two tabs on the (24 Vac) drain valve coil.

3.Remove the hose clip and hose connection from drain valve body.

4.The drain valve assembly is now free to be taken to a sink for disassembly and cleaning.

5.Remove the snap-fit red cap from the coil assembly and slide coil off the actuator.

6.Loosen the actuator with a wrench and unscrew from the plastic valve body.

7.Clean the exposed core, spring and plastic drain valve port.

8.The tapered end of the spring must be installed toward the solenoid. Reassemble and tighten the actuator 1/4 turn past hand-tight.

9.Clean out the end of the hose, then reconnect it to the drain valve body with the clamp.

10.Inspect the o-ring to make sure it is in good condition.

11.Fit mounting screws through the drain valve body, one through the ring terminal on green ground wire.

12.Push the two slip-on terminals back onto the two tabs on the coil. The terminals, although not identical, are reversible.

WARNING: To prevent the possibility of electrical shock the green ground wire must be reinstalled before power is restored.

EXTENDED SHUTDOWN

Before disconnecting power to the humidifier at the end of humidification season, ALWAYS DRAIN the cylinder first. Otherwise, the electrodes are subject to harmful corrosion which shortens cylinder life. Do NOT leave the switch in the DRAIN position indefinitely as the drain coil could burn out. Leave the switch in the OFF position and “open” the main external fused disconnect to stop power to the humidifier. Close the shut off valve in the water supply line feeding the humidifier. Lock the cabinet door(s) to prevent unauthorized tampering. All doors are factory supplied with keyed locks. DO NOT LEAVE THE KEY IN THE LOCK. ACCESS SHOULD BE LIMITED TO AUTHORIZED PERSONNEL ONLY.

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