Thermolec ACU-STEAM, User Manual

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Page 8
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8. Maintenance
WARNING : The water tank and its contents can become extremely hot . Please be careful before proceding.
As with any evaporative water device , some minerals normally dissolve in the tank water will create varying
degrees of deposits inside the tank. Even though the unit drains and cleans itself during normal operation,
it will require a minimum annual maintenance check (see sections 8.5 through 8.8) to assure all humidifi er
functions and components are operating properly.
8.1 Drain the water from the tank. Most of the time there will be water in the tank even when the humidifi er
is in standby mode since it only drains once per set amount of steam cycles (see section 18.5 for drain cycle
settings). First turn down the humidistat to avoid a steam cycle. Please note that when using an ACU-STEAM
electronic humidistat, if the relative humidity is extremely low the humidifi er may still run with the knob at
the minimum setting because of a range limiter inside the cover. If this occurs you will need to remove the
humidistat cover by pulling it off and turning the knob completely counter-clockwise. The main power to the
humidifi er (the breaker at the main panel, not the power button on the unit) needs to be turned off and then
back on. Once the power is reset the unit will start fi lling with water (blue LED will light) and keep fi lling until
draining starts (yellow LED). This process can take a number of minutes. Once draining has completed, turn
the main power off. There should be approximately one inch of water in the tank.
Wait a few minutes or until
the unit has cooled before proceeding with the following steps .
8.2 After draining the tank, TURN THE MAIN POWER OFF .
8.3 Remove the cover by turning the 1/4 turn screw to the left.
8.4 Unplug the white quick connect wire connected on the overfl ow pan at the bottom of the unit. This wire
is connected to the overfl ow sensor. Please see Fig. 8a.
White Wire
Main drain Tube
Overflow Pan
1. Lift
2. Pull
Overflow Tube
Rigid Drain Pipe
Overflow Sensor
Fig. 8a