Nortec NHDI - Manual (Page 20)

Unit Type
Warning: In order to eliminate faults, the steam
humidifier must be switched off and secured against
unintentional re-connection. Take care that the
electricity supply to the main contactor is disconnected
(check with voltage meter).
Only allow trained and qualified personnel to
repair faults. Faults relating to electrical installation
(e.g. change of unit fuse) must only be carried out by
authorized personnel.
Repair work and replacement of faulty
components must only be carried out by your service
technician!
MAINTENANCE
All maintenance work must be performed by
adequately qualified and trained personnel familiar
with the dangers involved. Ascertaining the
qualifications is the customer’s responsibility.
Instructions and details concerning the
maintenance work must be observed and adhered to
without fail.
Only the type of maintenance work outlined in this
documentation must be carried out.
Use original spare parts exclusively to replace
defective parts.
Before maintenance is initiated, the steam
humidifier must be taken out of operation in
accordance with instructions in the manual and
protected against unintentionally switching on the
humidifier.
NOTES ON MAINTENANCE
To safeguard reliable operation, the maintenance
of the NHSC should be devised in three stages. A
distinction is made here between periodic inspections,
minor servicing and major maintenance of the
steam-air humidifier.
The intervals required between minor servicing
and major maintenance depend on the water quality
and the quality of steam generated and can be
pre-selected on the rotary switch “S2” on the control
board. After expiry of the selected interval, the yellow
LED flashed and an appropriate message alternates
with the normal operation indication.
The following is an overview of the work that
should be undertaken for the three maintenance
stages.
Periodic Inspections
When Once per week
Work Inspect the water and steam
installations for correct sealing and any
possible damage.
Inspect the drain line for soiling.
Inspect the electrical installation for
loose cables and damaged
components.
Inspect the humidifier for irregularities
both external and internal.
- 17 -
Figure #20
Minor Servicing - NHSC ONLY
- Unit indicates cleaning is
required.
- This cleaning normally occurs
once a year(depends on water
quality).
- The scale collector tank and the
stainless steel tank are removed
and cleaned.
- Check all plumbing and
electrical components for any
issues.
NHSC Maintenance
Complete cleaning
(between 600 - 6000
hours of operation)
Figure #21
Major Maintenance - NHSC / NHDI
machine type
xxlb/xxxV