Step 2:
Calculate number of turns
required based on difference
between factory set point and
desired set point using the
following chart.
Example:
HEPA filter with desired set point of
0.9 in w.g.
Number of turns at 0.9 in w.g. = 4
Number of turns at factory set
point of 0.6 in w.g. = 2.2
Number of turns to field set = 4 –
2.2 = 1.8 (approximately)
NOTE:
Maximum available pressure
setting is 1.0” w.g. Do not exceed 4
½ turns (total).
Step 3:
Turn screw clockwise the
number of turns calculated above.
You will need a 1.5mm hex Allen
wrench
Step 4:
To check filter pressure
set point and/or to fine tune
,
insert
Magnehelic gauge into the static
pressure port (located along knife
edge of diffuser – diffuser face
must be removed to access).
Step 5:
Using an obstruction (piece
of cardboard or equivalent), slowly
increasing pressure on the unit by
blocking off more and more of the
diffuser face until the LED turns
from green to yellow.
Step 6:
Take pressure
measurement at point the LED
changed color and rotate the
adjustment screw until desired
pressure set point is reached.
Set P
oint in Inches w
.g.
Turns of Set Point Adjustment Screw
(from starting point at 0.25” w.g.)
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
Table 2. Set Point Adjustment
Turns of Set Point Adjustment Screw
(from starting point at 0.25” w.g.)
S
et P
oint in inc
hes w
.g.
0
1
2
3
4 5
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0 1 2 3 4 5
RSR Filter LED Set Point Adjustment
For more information visit
KeystoneCleanAir.com
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Fan Filter Units |
Installation Instructions