52
Maintenance
2583701_C_EN_1812_Nortec-GS_OM
Nortec GS
Task
30 Days
After
Initial
Start-up
Mid-Sea-
son
End of
Season
(2000 hrs)
Maintenance
Inspect conden
-
sate collection
system.
X
X
X
Check for leaks or blockages in the condensate lines throughout the
steam line and exhaust vent (if applicable).
Make sure that the condensate traps are primed.
If a condensate neutralizer is installed, follow recommendations of the
device manufacturer.
Inspect the
mounting of the
unit.
–
–
X
Check the mounting surface on which the unit is installed is stable,
and the unit is secured properly to the mounting surface.
Inspect overall
condition of the
unit.
–
–
X
Check the unit for obvious signs of deterioration.
Also perform regular inspections when the unit is operating – refer to
"Manually Initiate Tank Draining" on
.
6.3
List of Consumables
shows the list of consumable items for the Nortec GS humidifier.
Table 9: Consumables
Consumable Item
Replace
Part Number
Spark igniter
After 3 seasons (6000 hours) Refer to the Spare Parts List for kit part numbers.
Tank door gasket
After each cleaning
Sacrificial anode
When needed
All other gaskets
When removed
6.4
Management of Scale and Chloride Levels
As the humidifier produces steam, minerals dissolved in the water begin to concentrate in the tank over
time. The amount of dissolved minerals and the chloride levels need to be carefully controlled so they
do not affect the efficiency and service life of components. Hardness of water may cause foaming and
contribute to scale build-up in the humidifier tank and float chamber, and chlorides increase the risk
of stress corrosion cracking in stainless steel components of the humidifier. All of these contribute to
reduced efficiency, and increased amount of service and related maintenance costs.
IMPORTANT!
Component failures due to water quality outside the recommended ranges (refer to
) are not covered by warranty.
The Nortec GS humidifier periodically drains water from the tank to reduce the concentration of dissolved
minerals that accumulate during long-term operation. This is achieved in two ways – through a partial
blowdown and a full tank blowdown (FTBD).
In a partial blowdown, a certain amount of water (determined by the
setting) is drained
from the tank and replaced with fresh water, thus lowering the concentration levels. In a FTBD, the
entire tank is drained when a certain number of weighted hours (determined by the
setting)
have elapsed, then refilled with fresh water. Weighted hours is defined as the hours equivalent to a unit
operating at 100% output.
The humidifier is shipped with a default
of 25% for the partial blowdown, and
of 100 hours for FTBD. These settings ensure that concentration of dissolved minerals is minimized for
all water conditions. However, they can be adjusted in the control software once water conditions are
known for your site – refer to
"Adjusting Blowdown Settings" on page 53
In addition to the software-controlled FTBD, a separate 24 VAC signal connected to pins "1" and "8" in
