Operation, Operation guidelines – Bell & Gossett V1001576 Suction Diffuser Plus User Manual
Page 14
Operation
Operation guidelines
Initial operation
The start-up strainer must be removed from the Suction Diffuser Plus within 24 to 48 hours
after the initial circulation and cleaning of the system. If left in place, a noticeable increase
in pressure drop will be observed as the fine strainer becomes clogged and starts
restricting flow through the Suction Diffuser Plus . See
Service the suction diffuser plus
(page 14) in the Maintenance chapter of this manual for instructions for the removal of
this strainer.
Measure the pressure drop across the flange gauge ports on the inlet and outlet of the
Suction Diffuser Plus and, using the corresponding pump flow, compare the pressure
drop values with those published in section
(page 12).
• If the measured pressure drop matches the higher pressure drop for the
corresponding flow shown in the submittal, this indicates that the start-up strainer is
still in place and should be removed. Follow the instructions in
(page 14) in the Maintenance chapter of this manual to inspect the
orifice cylinder and remove any blockage that may be present.
• If the measured pressure drop matches the lower pressure drop value in the
submittal, this indicates that the strainer has already been removed.
Pressure drop charts
Performance characteristics measured using integrated PT ports with and without start-up
strainer.
A
B
B
A
• A = Pressure drop
• B = Flow
Figure 3: With start-up strainer
Operation
12
Suction Diffuser Plus INSTRUCTION MANUAL