TORAY MBR
Instruction Manual
06-G-MB2-NHPAC-220801
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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 plastic air diffuser. If
the load exceeds the limit above, put some supports on the piping to reduce the load.
One air diffuser is shipped from the factory with two rubber gaskets. Connect air diffuser to
the air-line using rubber gaskets with the tightening torque of 20 N.m.
After plumbing in the air diffusers, fill the membrane tank with clean water until the aeration
blocks are completely submerged in the clean water. Next turn on the air supply, check to
make certain that the air is being evenly distributed throughout the aeration block.
(3) Installation of Element Blocks
Adjacent two (2) element-decks can be connected to comprise the element block by
bots and nuts. If you apply riser pipe (see (2) in the page 24), relevant decks must be
connected.
Put the element block(s) onto the aeration blocks. Joint both using provided bolts if guide rail
system is not applied in case of -1C and -2C.
Use guide rails certainly and do not connect three (3) element-decks or more when
installing taller module NHPA150-3C and 4C. For 3C put one (1) upper element-deck
onto the lower element block which consists of two (2) bolted element-decks. For 4C
put the upper element block which consists of two (2) bolted element-decks onto the
lower element block which consists of two (2) bolted element-decks.
Also, do not lift and install entire decks at one time. Upper/lower element block must
be installed one by one to avoid distortion or damage to the element block which may
cause severe accident.
The serial number of each aeration block and its position in the tank should be recorded.
After installation,
take adequate measures to protect the elements and other
components from damage by covering with fireproof tarps.