Specifications

Page 50 • DRI-STEEM XT Electrode Steam Humidifier Installation, Operation, and Maintenance Manual
Maintenance procedures
Maintenance
Scheduled maintenance
At 500-hour intervals or when “Service interval reached” appears
in the Messages Log, inspect the steam cylinder, fill and drain
valves, steam hose, condensate piping, water supply piping, drain
piping, drain, and all other parts for proper operation and cleaning
requirements. Verify proper operation of the high limit humidistat,
relays, and airflow proving switch.
Steam cylinder
Steam cylinder service life depends on operating hours and water
hardness. If “Check cylinder” appears in the Messages Log during
and shortly after start-up, the message can be cleared and will stop
repeating after a few drain and fill events.
When “Check cylinder” appears in the Messages Log after extended
operation, the humidifier will continue to run, but the cylinder
must be replaced to ensure optimum output. Sure signs that a
cylinder needs to be replaced are when it is approximately one-
third full of minerals, or minerals have bridged between electrodes.
To replace the steam cylinder:
1. Close field-installed manual supply water shut-off valve.
2. Drain water from steam cylinder:
– At Main menu, select Tank Status, and press Enter.
– Select Mode Auto, and press Enter.
– Select Drain, and press Enter.
– Let the cylinder drain for 5 to 10 minutes until empty.
Drain water is automatically tempered.
3. When steam cylinder is completely empty, turn humidifier off.
Place all power disconnects in OFF position, and lock in OFF
position.
4. Open cabinet doors. See Warning at left.
WARNING
Hot water system
Cylinder and any undrained water may be
hot. To avoid injury from hot water, make
sure cylinder and humidifier components
have cooled before proceeding with
maintenance.
WARNING
Electric shock hazard
Contact with energized circuits
can cause severe personal injury or
death as a result of electric shock. To
prevent shock, disconnect electrical
power before performing service or
maintenance procedures on an part of
the humidification system.
When performing maintenance on the
humidifier:
• Always switch the keypad control mode
to Standby.
• Place all power disconnects in OFF
position and lock in OFF position.
• Close the field-installed manual supply
water shut-off valve.
mc_031110_0444
Opening and closing cabinet doors
To open the cabinet doors, use a slotted
screwdriver to rotate the quarter-turn
fastener counterclockwise so the slot is
vertical.
To close the doors, close the right then
the left door, and push the quarter-turn
fastener while turning clockwise so the slot
is horizontal.