Maintenance Shutdown And Extended Shutdown - Nortec SE Series Installation And Operation Manual

Maintenance Shutdown and Extended Shutdown

The following procedure should be followed to shut down the humidifier for maintenance or
should it be required to disconnect power to the humidifier for a period of extended shut-down.
When performing maintenance, the Nortec SETC models include a Tank Pre-Clean feature. Tank
Pre- Clean will activate the drain pump to flush out some of minerals in the bottom of the tank,
then refill partially with cold water to cool the tank, and finally drain the contents of the tank.
This cycle will cool the tank, as well as flush out some deposits.
1 Nortec SETC - Activate Tank Pre-Clean as described in Tank Pre Clean on page 50 or
press and release the drain button to simply drain the tank. Nortec SEP - Turn the
On/Off/Drain switch to Drain.
2 Nortec SETC - If preclean was activated wait until the LCD display indicates the preclean is
complete otherwise wait until no water is coming out from the drain. Nortec SEP wait until
there is no water coming out from the drain.
3 When the tank has completed draining, turn the main power switch to "Off". Also, shut off
the electrical power at the disconnect.
4 Close the manual shut-off valve on the steam supply.
5 Close the manual shut-off valve on the water supply line.
6 Briefly open the manual valve on the auxiliary drain line (if applicable) to drain any remaining
water.
7 The unit can now be serviced (if maintenance is being performed), or "stored" in this state
until the next humidification season. Alternatively, Nortec SETC models can be left in 3 day
drain state during an "off-season".
8 To restart the unit follow Start Up Procedure on page 36.
Note: As long as the Nortec SETC is powered, it will automatically drain the tank when
there has not been a call for humidity for an extended period of time. This feature will
reduce or prevent the possible accumulation of algae and bacteria growing in the
tank. The tank will remain empty until there is a call for humidity at which time the fill
valve will open and refill the humidifier tank. The unit will go through its normal
process for optimum operation.
69 | Maintenance and Servicing