11
Table 3. Cleaning limits *
1)
Cleaning pH Range
0 – 12
Cleaning Temperature Range
0 – 40 degree C
(32 – 104 degree F)
Maximum Concentration of NaClO as Cl
2
3,000 mg/L (10 < pH < 12)
Maximum NaClO Exposure
(lifetime contact time) as Cl
2
1,000,000 mg/L hours
Maximum Acid Contact Time
1,000 hours (pH > 0)
*1): Please note that the specifications are subject to changes from time to time.
Table 4. Specifications of modules *
1)
Module Type
HFU-2020AN
HFU-1020AN
Membrane Surface Area
(Outer Surface)
72 m
2
(775 ft
2
)
29 m
2
(312 ft
2
)
Dimensions
Diameter
216 mm
(8.50 inches)
Length
2,160 mm
(7.087 ft.)
1,120 mm
(3.675 ft.)
Weight
Full of Water
92 kg (203 lbs)
51 kg (112 lbs)
Drained
49 kg (108 lbs)
32 kg (71 lbs)
Materials
Housing
PVC and/or equivalent
Potting
Epoxy and/or equivalent
Connections
Top
Housing type joint
80A
Bottom
Housing type joint
80A
Side
Housing type joint
65A
Operating
Conditions
Max. Feed Water
Flow
12 m
3
/h (53 gpm)
4.8 m
3
/h (21 gpm)
Max. Backwash Flow
13.5 m
3
/h (59 gpm)
5.4 m
3
/h (23 gpm)
Max. Air Flow
9.0 Nm
3
/h (5.3 scfm)
Filtration Method
Outside to inside, dead end
Max. Inlet Pressure
300 kPa (43.5 psi)
Maximum
Temperature
40 degree C (104 degree F)
*1): Please note that the specifications are subject to changes from time to time.
