Afe, mini, and octo start-up procedures – Nortec Industries Airfog Series User Manual

Page 37

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Page 30

2008-04-11

1. AFE, MINI, AND OCTO START-UP PROCEDURES

A. INTRODUCTION

(1)

The operator must make reference to Figure 1 Typical Nozzle Layout when
following these instructions. Prior to startup, ensure the following:

(a)

All components have been visually checked for proper connections.

(b)

All supply and feed lines have been cleaned.

(c)

The on/off valve of the primary water pressure control section is OFF.

(d)

Water at 25 psig pressure from the main supply is ON.

(e)

The on/off valve of the primary air pressure control section is OFF.

(f)

The air compressor is running and providing a minimum of 90 psig.

(g)

The control panel switch is OFF.

(h)

The 24 VAC transformer is plugged into a 110 VAC source and the control
panel power indicator light is illuminating.

(i)

The humidistat is set at 100% relative humidity.

B. COMPRESSED AIR SUPPLY

(1)

The clean out valves on the ends of the supply pipes must be closed.

(2)

The on/off valve of the primary air pressure control section is opened to the ON
position. The handle should be in line with the pipe (as opposed to 90 degrees to
it).

(3)

The control panel switch is turned to the ON position.

(4)

Adjust the air pressure regulator in the control panel to about 70 psig to obtain
maximum water throughput for each nozzle for this startup test.

(5)

There should an audible hissing sound as the compressed air works its way
through the piping to the nozzles. If this is not detected and air can not be felt by
hand directly in front of the nozzle orifice, then air is not being provided to the
system. Check the compressed air line back to the compressor for other valves
that may not be open.

(6)

The air pressure regulator knob in the primary air pressure control section is to be
adjusted until its gauge indicates 90 psig.

(7)

Most significant air pressure leaks can be detected by sensing the air flow with the
hand or by spraying on soapy water to observe the growth of bubbles around the
leak. If an AFE nozzle is sucking some air rather than 100% water through the
water pipes, the nozzles will sputter/spit and behave irregularly as opposed to a
steady production of uniform mist. A thorough survey should be conducted to
identify and fix leaking joints.

C. WATER

SUPPLY

(1)

The clean out valves on the ends of the water supply pipes must be closed.

(2)

The on/off valve of the primary water pressure control section is turned ON. The
handle should be in line with the pipe (as opposed to 90 degrees to it).

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