Nortec HP Series, Installation And Operation Manual, Page: 46 / 76

43 | HP Series Installation Manual
Over greasing bearings can cause premature bearing and/or motor failure. The amount of grease
added to the motor should be carefully controlled.
Inlet Water Filters
The 10 micron water filters must be inspected periodically. Inspection is accomplished by
comparing the pressure valves on the filter inlet and outlet sides. When the pressure drop
across the filters reaches or exceeds
10 psi, the filters are considered spent and should be
replaced. The longevity of the filters depends entirely on the quality of the water being supplied
to the pump. Nortec recommends replacing the filters at a once per year as preventative
maintenance regardless of measured pressure drop.
Steps:
1 Turn the pump controller to off.
2 Turn the supply water valve to off.
3 Using a filter wrench, remove the filter housings.
4 Replace filter cartridges paying attention to any directional arrows.
5 Reinstall the filter housings, tighten hand tight with the filter wrench.
6 Turn the supply water back on.
7 Turn the power back on.
High and Low Pressure Lines and Hoses
The hoses and lines should be periodically inspected for damage, cracking, leaking. Ensure that
the pipes are rubbing on any vibrating equipment.
Atomization Nozzles
The Nortec HP HVAC system is designed to operate only on reverse osmosis or de-ionized water
supplies. This allows for long trouble free operation of the nozzles. Occasionally because of
either water quality or dirt, an atomization nozzle may become blocked. With the system
running, use a nozzle cleaning tool, or .007” (0.177mm) wire inside the nozzle orifice. Spin the
tool around until the blockage dislodges. If you are still unable to clear the blockage, contact
Nortec for a replacement nozzle.
Wear eye protection during this procedure.
 A proper spray pattern should be circular and measure 2” (50mm) across at a distance of 2”
(50mm) from the nozzle. See Figure 33 Nozzle Spray Pattern.
 Please refer to Figure 34: Nozzle Components for assembly and disassembly of nozzle
components.