53
RTS HUMIDIFIER RX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
1.
Annually
(also recommended when maintenance is performed)
• Inspect tank and gaskets for leaks.
• Measure current draw of heaters and verify amp values per stage by
comparing to the wiring diagram located inside the subpanel cover. This
identifies any burned out heaters. Only qualified electrical personnel
should perform this task.
• All safety devices in the control circuit should be cycled on and off to
verify they are functioning. These include:
• High limit switch
• Airflow proving switch
• Low water level probe. Pull out probe plug; fill valve should energize.
2.
Seasonally
(or as required, depending on water quality)
• Clean the tank and water level probes.
• Use the quarter-turn latches to remove the front enclosure panels. See
“Electric shock hazard” Warning at right.
• Note: If the humidifier has an SDU mounted directly above it, remove
the SDU cover before removing the humidifier cover.
• If the tank is hot, cool it down first. See “Cool down humidifier” on
• Allow the tank to drain completely.
• Shut off the water supply.
• Shut off the electrical supply.
• Disconnect the electrical plug between the heaters and the bottom of
the electrical panel. There is one connector per stage.
•
Important:
Disconnect by pulling on plug housing. Do not
disconnect by pulling on cord or wires.
• Remove the tank heater plate. See page 55 for procedure.
• Clean the tank interior using a putty knife or similar flat instrument.
• Clean and inspect probe rod assembly:
• Unplug the probe plug assembly, and leave ground wire connected
to tank.
• Unscrew probe rod assembly using the probe tool (see Figure 53-1),
and clean probe housing, ensuring that all passageways for water
flow are clear.
• Clean probe rods using steel wool or similar mild abrasive material.
Inspection and maintenance
Remove and install probe assembly with
supplied probe tool. Attach a 3/8" square
drive to the probe tool.
When installing, torque probe assembly to 120
in-lbs (10 ft-lbs; 13.6 N-m). Probe tools can be
ordered from your DriSteem representative (Part
No. 185101).
Probe tool
OM-7395X
WARNING
Electric shock hazard
Do not remove humidifier electrical
panel cover, heater terminal cover, or
subpanel access panels until electrical
power is disconnected. Improper wiring
or contact with energized circuits
can cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Only qualified electrical personnel
should perform maintenance
procedures.
FIGURE 53-1: PROBE TOOL
MAINTENANCE
