SPARE PARTS
Part of the Designer’s job is to prepare the system
parts list which includes spare parts and leak repair
kits. These parts and kits are to be retained in some
safe location in a workshop for immediate access.
It is recommended that spare parts and repair kits
be replaced as soon as they are consumed.
Some NORTEC AIRFOG humidification system
owners choose to not maintain in-house spares or
repair kits as there is sufficient redundancy built into
the original design to remain fully operational even if a
few nozzles have to be shut down (disconnecting the
air pressure tube or removal and capping off the water
and air delivery nozzle tubes). The lead time to obtain
replacement parts or repair kits is considered an
acceptable risk. Other owners decide that this risk is
too high and choose to maintain spare parts and repair
kits in-house so that rapid repairs can be made.
SEASONAL MAINTENANCE
In most cases there is a humidification season but
if this is not the case, it is recommended that the
following actions be conducted once a year.
·
A detailed visual leak inspection using soapy
water and low pressure (less that 10 psig) of
all air and water transport pipes and system
components is to be recorded on a sketch to
indicate leak locations and severity.
·
Comparison with previous inspection records
could indicate systematic problems as
compared to random events.
·
Repair leaks and verify the system is fully
operational using the procedure described in
the Start Up section of this guide.
·
The AIRFOG system is to be shutdown in
accordance with the procedure described in
the Shut Down section of this guide.
·
Each nozzle shall be cleaned of mineral water
deposits and accumulated dirt using the
procedure described in the Maintenance
section of this guide.
·
Each nozzle should be lubricated using a
silicone based lubricant.
·
The compressor manual should be consulted
for its recommended seasonal maintenance.
SEASONAL STARTUP PROCEDURE
·
A detailed visual inspection of all air and water
transport pipes and components is to be
recorded on a humidification system sketch to
indicate damage, non-conformance’s and
abnormalities.
·
Comparison with previous inspection records
could indicate systematic problems as
compared to random events.
·
Repair the identified problems and verify the
system is fully operational using the procedure
described in the Start Up section of this guide.
UNSCHEDULED MAINTENANCE
Normally an unscheduled maintenance activity is
initiated by a visual observation of a leak or other
failure.
·
The AIRFOG system is to be shutdown in
accordance with the procedure described in
the Shut Down section of this guide.
·
Execute repair action either by repairing the
leak or replacement of the suspected
component.
·
Record the date, nature of the problem, the
repair action taken, other pertinent details and
sign the failure report.
·
Comparison with previous inspection records
and failure reports could indicate systematic
problems as compared to random events.
·
Verify the system is fully operational using the
procedures described in the Start Up section
of this guide.
VACUUM VALVE TESTING
Setup for test:
·
Adjust air feed pressure from the control panel
to 70 psig.
·
Adjust water feed to vacuum valve to 25 psig.
·
Adjust vacuum valve regulator to 7 psig. (This
adjustment cannot be made until the system is
turned on and a pilot signal of 15 psig or
greater is applied.)
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