Nortec NH-EL Series - Manual (Page 44)

41 | Start Up
Start Up Procedure
1 Examine the humidifier and installation for damage and/or improper installation.
2 Ensure that the doors are in place and secured with retaining screws.
3 Open the supply water shut off valve.
4 Turn on the mains power using the installed disconnect.
5 Press the On/Off switch on the front of the humidifier to turn the humidifier on.
The display will show a splash screen then a few seconds later the
main status screen will be displayed indicating the humidifier is in
normal operation mode. If no faults or warning conditions are
detected the LED will be either solid, or flashing green.
If a warning or fault condition is detected it will be displayed on the
status screen and the status LED will be yellow for a warning or red
for a fault. See troubleshooting section for information on
diagnosing and correcting faults.
Note: The information displayed depends on the configuration of
the NH-EL and the actual operating conditions. It may vary from the
display shown.
6 If On/Off or a control humidistats have been installed, check and adjust the control setpoint
on the control and high limit humidistat (see Nortec Digital Controls on page 43). If
transducer controls have been installed then adjust the humidity setpoint using the touch
screen display (see NH-EL Humidifier Configuration on page 54)
7 When either the external humidistat or internal controller generate a demand for humidity
higher than 27% and the security loop is closed the LED will turn solid green, the main
contactor will engage, the fill valve will activate (after a delay) and the cylinder will slowly fill
with water.
Note: While the cylinder is filling with water there should be no water flowing down the drain. If
water is flowing down the drain it can indicate excessive backpressure or a leaking drain
valve. See General Troubleshooting on page 72.
8 It can take 15 – 20 minutes or longer for a large humidifier to fill, for the water to be heated
up by the submerged electrodes, and for steam to be produced.
Note: If operated on low conductivity water it may take several hours for the NH-EL to reach
full output capacity. This is normal. During this time the status will cycle between “Filling”
and “Warning – Max Level”. The humidifier will not perform any drains and will concentrate
the cylinder water until required capacity is reached, at which point it will indicate
“Humidifying”.
Warning: Damaged units or improperly installed units must not be operated. Damaged or
improperly installed units may present a danger to persons and property.