1. For BMV 1, 2, 3, 4
Put the circlip cover on the shaft, and then fit the sleeve, impeller, impeller sleeve, diffuser, support
diffuser. Continue the assemble order till the last impeller is fitted. Then fit the impeller cover, washer,
screw the nut. Pay attention to the position of the support diffuser, for less stages pump, the last one is
support diffuser. For more stages pump, support diffuser should be increased accordingly, the distance
of each support diffuser should be even, and put on the support sleeve and bearing with support
diffuser.
Put the inducer on the inlet & outlet chamber, and then fit the finished parts as above on the inducer.
Fit the O-ring on the inlet & outlet chamber, put on the cylinder and the top diffuser.
Put the pump head installed with O-ring, lining and corrugated springon the cylinder. Screw the four
nuts of the stay bolts on the base plate. Do not tighten one nut completely at one time, but tighten them
symmetrically in turn.
Fit the mechanical seal and tighten it, then install motor and coupling, screw the bolts in coupling (but
not tightly), press the coupling and shaft down to the direction of the base plate. Then lift it about 0.04"
in reverse direction, tighten the screws. Note that the space between the two couplings should be equal.
Tighten fixing bolts in mechanical seal, rotate the coupling to ensure that the shaft can rotate freely and
not be choked.
Reverse the process above can disassemble a pump.
2. For BMV 8, 12, 16, 20
Put the circlip cover on the shaft, and then fit the sleeve, impeller, impeller sleeve, diffuser, support
diffuser, bearing, support sleeve. Continue the assemble order till the last impeller is fitted, and then
install the impeller cover, washer, tighten the nuts.
Put the inlet & outlet chamber on the base plate, then put the O-ring, clamp plate inducer on inlet &
outlet chamber, then put the finished parts on the inducer, and put the top diffuser on the top, tighten
nuts of straps. At last, put on the cylinder.
Put the pump head installed with O-ring, lining and adjusting rubber on the cylinder, then tighten the
four stay bolts symmetrically in turn.
Fit the mechanical seal and tighten it, then install motor and coupling, screw the bolts in coupling (but
not tightly), press the coupling and shaft down to the direction of the base plate. Then lift it about 0.04"
in reverse direction, tighten the screws. Note that the space between the two couplings should be equal.
Tighten fixing bolts in mechanical seal, rotate the coupling to ensure that the shaft can rotate freely and
not be choked.
Reverse the process above can disassemble a pump.
16
Assemble & disassemble
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