MAINTENANCE
As with all automatic and mechanical devices,humidifiers require
periodic maintenance and servicing either by the user or competent
service personnel to provide continued customer satisfaction, longer
equipment life and reduction in customer cost.
WARNING! DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE SERVICING.
The plumbing and electrical compartments contain high voltage components
and wiring. The access door is equipped with a lock. Access should be
limited to authorized personnel only.
STEAM CYLINDER
WHEN TO REPLACE THE STEAM CYLINDER
After a period of operation (not on initial startup), the water level
will approach the top of the cylinder. (Life varies from 500 to
2000 operating hours.)
The RESDELUX control board constantly monitors unit performance and will
shut down the humidifier and alert the customer to change the cylinder.
The yellow light will flash 4 times in sequence.
HOW TO REMOVE THE STEAM CYLINDER
It is advisable to keep a spare cylinder in stock throughout the
humidification season. When ordering a replacement steam cylinder,
always quote the three
or five digit model number on the label applied to the cylinder or quote
the unit’s serial number, model and voltage located on the spec label
(nameplate).
1. Turn off the water supply to the unit.
2. The used cylinder must be drained completely before removal. If the
water has just been boiling, allow it to cool before draining. Push the
ON/OFF/DRAIN switch to the MANUAL DRAIN position. Leave it in this
position just long enough to drain the cylinder (usually not longer than
3 minutes).
3. When completely drained, push the main ON/OFF/DRAIN switch back to
the OFF position.
4. Once drained, disconnect all power supplies to the unit.
5. Open the front cover door.
6. Cylinder plugs are attached to the primary voltage cylinder wires.
Remove cylinder plugs from cylinder pins by pulling vertically.
7. Using a slotted screwdriver, loosen the steam hose clamp(s) and pull
the steam hose off the cylinder vertically.
8. The cylinder is now ready to be lifted out of the unit. CAUTION:
Cylinder and any undrained water might still be HOT.
9. Remove the used cylinder as previously described. NORTEC does not
recommend the use of any acid solutions to clean the used cylinder.
Always replace a used cylinder.
HOW TO INSTALL THE REPLACEMENT CYLINDER
1. Reverse procedure should be followed to install a new cylinder. Main
power supply to the unit must be disconnected until the cylinder is
completely installed and reconnected.
2. The cylinder plug wires are color-coded in accordance with colored
dots beside the electrode pins on the top of the cylinder.
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 DRAINVALVE
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 groundwire.
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. |
