30
| Nortec AirFog Installation Manual
Nortec AFE, Nortec MINI, and Nortec Octo Shut Down Procedures
Controlled system shutdowns are conducted for either maintenance (scheduled or repair) or
long term seasonal reasons. If the shutdown is for short term maintenance then it may be
possible to shorten this full procedure.
The following procedures are the recommended method to manually terminate Nortec AirFog
operations for long periods of time. Typically this would be after the heating season (winter) is
over.
Turn off the water supply valve on the primary water pressure control section
Allow the system to operate for 10 minutes to extract as much of the water as possible from
the water pipes.
Turn off the system and connect a hose to the clean out valves / hose bib. Direct the hose
to a bucket, open the valve, and allow the system to drain completely.
Disconnect the 24 VAC transformer from the 110 VAC supply.
Turn off the air supply valve on the primary air pressure control system.
Turn the system off at the control panel.
Turn the air compressor off.
For long periods (weeks or longer) of system down time, it is recommended that pressurized air
is used to blow all water out of the system.
It is important that components are not disconnected or removed from the system while they
are under pressure (air or water). Turning the master switch off in the control panel will isolate
all high pressure water system components downstream of the vacuum valve (Nortec AFE
systems).
This control panel switch will also isolate all high pressure air system components downstream
of the pilot air regulator. This is often all that is required to isolate the nozzles. Be sure that the
air and water mains supplying the system will still be under pressure.
If there is any doubt about whether a component, pipe or tube is under pressure, then turn off
the main switch in the control panel, turn off the water pressure at the main water pressure
control section and turn off the air pressure at the primary air pressure control section. Bleed
off the remaining pressures prior to disconnection of any plumbing interface fittings.
