Nortec MES2 - Manual (Page 33)

Operation | 30
Start Up Procedure
1 Examine the humidifier and installation for damage and or improper installation.
2 If enclosed plumbing option is installed ensure that the front cover is in place and secured
with its retaining screw.
3 Open the supply water shut off valve.
4 Turn on the mains power using the installed disconnect.
5 Turn the On/Off switch to the “On” position.
The humidifier will perform a self-diagnostic sequence during which the LED’s and internal
components will be momentarily activated.
If an error is detected during the self-diagnostic sequence the humidifier will not start. The
yellow status LED will flash in sequence to indicate the detected fault. See Table 7:
Troubleshooting MES2 Faults on page 43 for information on diagnosing and correcting
faults.
After the system test the humidifier is in normal operation mode.
6 Check and adjust the control setpoint on the control and high limit humidistat.
7 When the external humidistat generates a demand for humidity and the security loop is
closed the green humidifying LED on the front of the humidifier will light up, the power relay
on the control board 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 chapter on troubleshooting starting on page 39.
8 It can take some time for the water to be heated up by the submerged electrodes and for
steam to be produced. Once the fill valve shuts off after reaching the appropriate water
level, the water in the cylinder will start to heat up until steam is generated.
Note: If operated on low conductivity water it may take several hours for the MES2 to
reach full output capacity. This is normal. During this time the humidifier will not perform
any drains and the conductivity of the water in the cylinder will increase.
Warning: Damaged Units or improperly installed units must not be operated. Damaged or
improperly installed units may present a danger to persons and property.