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-2020HN
Membrane Surface Area
(Outer Surface)
72 m
2
(775 ft
2
)
Dimensions
Diameter
216 mm
(8.50 inches)
Length
2,160 mm
(7.087 ft.)
Weight
Full of Water
110 kg (243 lbs)
Drained
67 kg (148 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)
Max.
Backwash
Flow
13.5 m
3
/h (59 gpm)
Max. Air Flow
9.0 Nm
3
/h (5.3 scfm)
Filtration
Method
Outside to inside, dead end
Max. Inlet
Pressure
600 kPa (87.0 psi)
Maximum
Temperature
40 degree C (104 degree F)
*1): Please note that the specifications are subject to changes from time to time.
