TORAY MBR
Instruction Manual
06-G-MB2-NHPAC-220801
32 of 61
(4) Plumbing in Filtrate Water Manifold
Before making any connections to the filtrate manifolds, the water line should be
flushed to remove any residual construction debris and avoid pressurizing the filtrate
side of "NHPA Series” over 10 kPa.
Filtrate water manifolds are shipped from the factory with one blind flange furnished at one
end only. Connect the filtrate water pipe to the open end flange of the filtrate manifold and
confirm tightening of the blank flange since it may have got loose during transport. The buyer
may need to purchase a compatible flange for connecting the filtrate water line to the
supplied filtrate water manifold. Connect the filtrate water manifold to the filtrate water line
using rubber gasket with the tightening torque of 20 N.m.
To avoid membrane element damage, never place the filtrate connections to the membrane
elements under stressful forces.
Attach chains or slings to the lifting lugs when lifting element-deck,
element block, or aeration block of “NHPA Series”. Slowly raise the
module straight up. Avoid sudden changes in movement to
minimize shaking the module. Never allow personnel to stand
under the “NHPA Series” during lifting.
Use chains or slings with sufficient load rating to lift the weight of
the "NHPA Series" or any of its components.
When installing “NHPA Series” module, make provisions, in
advance, to access the upper portions of the membrane module
via a scaffold or ladder. Do not climb on the module structure.
Never step on the air diffuser and filtrate water manifold. Use
protective equipment to ensure the safety of workers.
Do not lift upper element block and lower element block at one
time when lifting NHPA150-3C or 4C. Disconnect the upper block
from the lower block prior to lifting, the upper/lower element blocks
should be lifted separately.
Wear the appropriate personal protective equipment (e.g. safety
gloves) in order not to cut hand on the edge of the module frame.
Connect the flanges of air diffuser and filtrate water manifold to the
piping with the tightening torque of 20 N.m, in order to avoid
distortion, leakage, or breakage of the air diffuser and filtrate water
manifold.
Consider piping materials and regulate the load to the flange
connection points at less than 20 kg per flange in order to avoid
distortion, leakage, or breakage of the air diffuser and filtrate water
manifold. If the load exceeds the limit shown above, put some
supports on the piping to reduce the load.
Avoid pressurizing the filtrate side of "NHPA Series” over 10kPa.
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CAUTION
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CAUTION
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CAUTION
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CAUTION
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DANGER
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