Nortec Blower Packs - Manual (Page 25)

Blower Pack Installation Guide | 22
Maintenance/Service
The RM-BP and NH-EL Humidifier have been designed to require very little maintenance. Regular
maintenance consists of checking the humidifier to insure it is in good condition, cleaning out the
intake grill of dust and inspecting wiring on inside of blower pack.
Performance of the Fan may become reduced temporarily if significant dust build-up occurs on both
RM-BP and NH-EL Space models. It is recommended to take a vacuum or similar to remove all dust
build up on the top of the humidifier as accumulation occurs throughout the span of a year.
Troubleshooting
Symptom Cause Corrective Action(s)
Blower not operating
Note: Blower pack does not turn on unless
steam is being produced by the humidifier.
1 No power to blower pack 1a Check power connection.
1b Check NH-EL fusing and
Transformer
Steam coming out but blower pack not
running
1 On/Off Thermostat not closing 2a Ensure Steam supplied to Blower
Pack
2b Verify Wire continuity to
temperature switch.
2 Very High Ambient
temperature
NH-EL Humidifier not running
with Blower Pack Warning:
security loop Open
1 Security loop wiring missing
between Blower Pack and
NHEL low voltage terminal
strip
2 No power to blower pack
1 Wire blower pack security loop
to blower pack
2 Check power connection