Price FFU series, Инструкция по установке и обслуживанию

Страница: 19 / 42

FAN FILTER UNIT
INSTALLATION INSTRUCTIONS
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 Point in Inc
hes 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
17
priceindustries.com | FAN FILTER UNIT - Manual