81
A
A
P
P
P
P
E
E
N
N
D
D
I
I
X
X
D
D
Q
Q
U
U
I
I
C
C
K
K
C
C
H
H
A
A
R
R
T
T
F
F
O
O
R
R
T
T
H
H
E
E
F
F
I
I
L
L
T
T
E
E
R
R
E
E
D
D
E
E
N
N
C
C
L
L
O
O
S
S
U
U
R
R
E
E
S
S
To determine the actual face velocity at the sash opening,
airflow velocity readings will need to be taken. This
should be done across the sash opening of the enclosure in
accordance with the
Industrial Ventilation Manual
. (See
Appendix E) The “average face velocity” is achieved by
taking readings in two rows across the enclosure with the
readings 6" from the ends and evenly spaced every 12"; the
first row is 3" down from the upper sash foil and the second
row is 3" up from the work surface. A total of four
readings will be taken for the 2' enclosure, six readings
taken for the 3' enclosure and eight readings taken for the 4'
enclosure and then averaged.
Model
Size
2' 3' 4'
Sash Height from Work Surface
(inches)
9.44 9.44 9.44
Total Open Area with Bypass (sq. ft.)
1.45
2.20
2.95
Exhaust Airflow Volume at 90fpm (CFM)
130
200
265
Alarm Airflow Volume at 60 fpm (CFM)
85
130
175
Initial Mag. Gauge Pressure Reading (inches H
2
O)
0.20 to .045
0.15 to 0.40
0.10 to 0.35
Number of Laskin Nozzles needed at 10 psig
1
1
1
Exhaust HEPA Filter w/ Gasket Dimensions (inches)
18x18x3.31 30x18x3.31 42x18x3.31
*Motor Horsepower (HP)
0.13
0.13
0.30
*Capacitor (MFD, Volts)
10MFD, 115V
(2) 4MFD, 230V
10MFD, 115V
(2) 4MFD, 230V
15MFD, 115V
4MFD, 230V
Fluorescent Lights
F15T8-SP35
F17T8
F25T8
UV Light on Class I only
G15T8
G15T8
G30T8
Summary of Contents for 3980200
Page 2: ......
Page 13: ...8 Chapter 2 Prerequisites ...
Page 17: ...12 Chapter 3 Getting Started Figure 3 1 Filtered Enclosure Installation ...
Page 67: ...62 Chapter 7 Accessorizing and Modifying Your Filtered Enclosure ...
Page 82: ...77 Appendix C Filtered Enclosure Specifications C 1 ...
Page 83: ...78 Appendix C Filtered Enclosure Specifications C 2 ...
Page 84: ...79 Appendix C Filtered Enclosure Specifications C 3 ...
Page 85: ...80 Appendix C Filtered Enclosure Specifications C 4 ...
Page 92: ...87 ...
Page 93: ......