Maintenance
42
SS-SVX002B-EN
detailed instructions on changing the cylinder. The
following procedures are to be followed when replacing
the cylinder.
NOTICE
Humidifier Damage!
Failure to replace the cylinder at the end of cylinder life
may result in humidifier damage.
Note:
Decrease the humidity set point below ambient
humidity to allow the cylinder to cool down before
removing the cylinder.
1. Turn the A/C unit Off by pressing (and holding) the
Enter key on the E² controller.
2. Turn off the water supply to the humidifier.
3. Turn the main power disconnect switch(es) Off and
open the doors of the A/C unit.
4. Turn the fan motor starter protectors (Q01, Q02, Q03,...)
to the Off position.
5. Fashion a jumper wire and install it across the
terminals on the airflow switch (F40).
6. Using a pair of vise grips, turn the shaft of the main
power switch to the On position to provide power for
the humidifier drain solenoid.
7. Drain the cylinder by pushing the “On-Off-Drain”
switch to the Drain position.
8. When drained, push the “On-Off-Drain” switch to the
Off position.
9. Turn the main power disconnect switch Off to
disconnect power from the humidifier and remove the
jumper from the airflow switch.
10. The power wires to the cylinder are attached by
cylinder plugs to the electrode pins on top of the
cylinder. Pull these plugs vertically off the pins.
WARNING
Hot Surface!
Failure to follow instructions below could result in
severe burns. Surface temperaturesmay exceed 300°F
(150°C). To avoid possible skin burns, stay clear of these
surfaces. If possible, allow surfaces to cool before
servicing. If servicing is necessary while surface
temperatures are still elevated, you MUST put on all
Personal Protective Equipment (PPE).
11. Loosen the steam hose clamp(s) and pull the steam
hose off vertically.
12. Using a flat head screwdriver, press the tab on the
cable tie to release it. Lift the cylinder straight up to
disengage it from the humidifier.
13. Place the new cylinder on the side mounting slots
within the unit, ensuring the cylinder mounting stubs
are seated properly.
14. Replace the cylinder plugs on the pins, ensuring the
white sensor plug goes on the single pin, which is
offset from the others.
15. Ensure the plugs are secured on the pins. If the plugs
are loose, they may be temporarily squeezed together,
however, the plugs must be replaced since a loose plug
could generate enough heat to melt and destroy the
plug.
16. Replace the steam hose and tighten the clamp(s).
17. Push the “On-Off-Drain” switch to the On position.
18. Turn the fan motor starter protectors (Q01, Q02, Q03,...)
to the On position.
19. Close the A/C unit doors and turn the main power
disconnect switch(es) to the On position.
20. Turn on the water supply to the humidifier.
21. Turn the A/C unit On by pressing the Enter key on the
controller.
22. Adjust the humidity to the desired set point.
If the humidifier is to be shut down for an extended period,
always drain the cylinder first. Follow the above steps (1
through 8) ensuring the “On-Off-Drain” switch is in the Off
position. Failure to do this will drastically shorten the
cylinder life.
Air Filter Replacement
The air filters are accessed from inside the cabinet. To
change the filters, open the front doors of the cabinet. For
up-flow units, the filters are located behind the air intake
grilles. For down-flow units, the filters are located at the
top where the label “FILTER ACCESS” appears. Remove
the old filters from the trays. Insert the new filter(s)
ensuring the directional airflow arrows on the filters are
correct.
