DriSteem Humidi-tech Installation, Operation And Maintenance Manual page 41

2. (or as required, depending on water quality)
– Remove the two fasteners on each side of the cover
enclosure (see Figure 36-1).
– Remove the enclosure. 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 Page 36.
– Shut off the water supply.
– Allow the tank to drain completely.
– Shut off the electrical supply.
– Disconnect the fill line at the supply side of the fill valve.
– Disconnect the electrical plugs between the tank
components and the back of the electrical panel
(includes: power plug, fill plug, drain plug, water level
control plug, tank temperature sensor plug, and thermal
trip plug).
I m p o r t a n t : Disconnect by pulling on plug housing.
Do not disconnect by pulling on cord or wires.
– Disconnect the drain union on the back left corner of
the frame.
– Disconnect the steam supply hose from the top of the
tank.
– Lift the tank foot above the frame flange, and slide the
tank assembly forward to remove.
from the tank.
instrument.
– Unplug the probe plug assembly, and leave ground wire
connected to tank.
– Unscrew probe rod assembly using the probe tool (see
Figure 37-1), and clean plastic probe housing, ensuring
that all passageways for water flow are clear.
– Clean probe rods using steel wool or similar mild
abrasive material.
– Inspect composite plastic probe housing. If any signs of
cracking, roughness, or deterioration, replace assembly.
– When sliding probe housing into bracket from which it
hangs, orient housing so neither water flow slot directly
faces tank wall at back end of bracket.
Maintenance
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 37-1:
Probe tool
Probe tool
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 13.6 N-m.
Probe tools can be ordered from your DRI-STEEM
distributor (Part no. 185101).
OM-7395X