Nortec NH-EL Series - Manual (Page 43)

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Touch Screen Display
Provides status
information as well
as a user interface
for configuring the
humidifier.
Status LED
Single LED changes
color to indicate status.
Door Interlock Switch
NOTE:
(prevents contactor from
engaging when door is open)
Pull out with door off
to override.
On/Off Switch
(Turns humidifier On/Off)
Auxiliary Drain Switch
(Can be used to drain
cylinder without software)
NH-EL User Interface
Figure 36: NH-EL User Interface
Auxiliary Drain Switch
In addition to software controlled draining of the cylinder, the NH-EL has a manual drain switch
which can be used to drain the cylinder even if software is not functioning. To drain the cylinder
put the switch into the drain position. For normal operation the switch should be in the off
position. If the unit has multiple cylinders, the switch will have both “Cylinder A” and “Cylinder
B” settings. This allows single-cylinder draining.
Door Interlock Switch
The door interlock switch cuts power to the contactor when the door is removed. It is an
additional safety device intended to prevent the possibility of service technicians coming into
contact with live electrical wiring while working on the humidifier. Pull the switch out with door
off to override.
Caution: Power to the humidifier should always be turned off using the dedicated external
disconnect before removing the door or side panel, or before doing any service work on
the humidifier.