·
The cleaning timer range bands can be
adjusted by setting the 6 DIP timer switches in
accordance with Table #1 (“Cleaning Timer
Switch Settings”).
As an example, suppose the switch settings were:
This means that the timer and the AIRFOG system
would be OFF (i.e. in the scale 1 to 10 minutes) for a
period of time defined in this range and set by the OFF
adjustment dial on the top of the timer. Say this was
set to 1 then, during each cleaning cycle the whole
system would be deactivated for 1 minute.
The timer and the AIRFOG system would be ON
(i.e. in the scale 1 to 10 hours) for a period of time
defined in this range and set by the ON adjustment
dial on top of the timer. If this ON adjustment dial was
set to 2, then the system would operate for 2 hours
between cleaning cycles.
These example settings would activate the
cleaning cycle every 2 hours and the length of time the
AIRFOG system was automatically turned off would be
1 minute in duration. Using settings that produce an
OFF cycle less than 10 seconds are not
recommended. Using settings that produce an ON
cycle of less that 15 minutes are not recommended.
If short ON cycles (less than 15 minutes) are
necessary to maintain system performance, then
addition of mechanical air and water filters would be a
far superior method to control nozzle cleanliness and
system performance.
FINAL STEPS
Once the humidistat is set and locked, the control
panel door can be secured and the locking nuts on the
primary air and water regulators can be tightened.
AIRFOG SYSTEM 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 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 10 minutes of operations to extract as much
of the water as possible from the water pipes.
Open the clean out valves on the water supply
lines to permit the AFE system to suck the remaining
water from the pipe and drain the system of water. A
bucket should be used to collect any water that may
exit the pipe at the clean out valve.
Disconnect the 24 Vav transformer from the 110
Vav 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.
- 16 -
0
20%
40%
60%
80%
100%
0
25
30
35
40
45
50
55
60
65
70
Applied Air Pressure PSIG
Va
c
u
m
m
Va
lv
e
Adjustment
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
Capacity
O
utput
Chart #1
Capacity Output vs. Vacuum Valve Adjustment
AFE Nozzle Output
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
0
10
20
30
40
50
60
70
80
Applied Air Pressure
Capacity
Output
0.9
1.8
2.7
3.6
4.5
5.4
6.3
7.2
Kg/hr
Lbs/hr
68.9
137.9
206.8
275.8
344.7
413.7
482.7
551.6 Kpa
psig
Chart #2
AFE Capacity Chart
