Bell & Gossett V1001576 Suction Diffuser Plus User Manual
Page 15
A
B
B
A
• A = Pressure drop
• B = Flow
Figure 4: Without start-up strainer
Continued operation
During system operation, measure the pressure drop across the inlet and outlet flanges of
the Suction Diffuser Plus and compare the data with the published pressure drop
information to detect if any blockage is present within the suction diffuser Plus. If the
measured data matches the higher pressure drop value for the system flow, there may be
a blockage inside.
Follow the instructions in
Service the suction diffuser plus
chapter of this manual to inspect the orifice cylinder and remove any blockage that may
be present.
A pressure gauge installed in one of the Gauge ports of the Suction Diffuser Plus can also
warn of a blockage.
NOTICE:
Potential pump damage. Blockage in the suction diffuser can cause serious damage due
to cavitation within the pump. NPSH requirements for the pump must be met and
maintained. Periodically verify the pressure drop across the suction diffuser and inspect
the orifice strainer to prevent blockages that can cause cavitation. Failure to follow these
instructions could result in property damage.
Operation
Suction Diffuser Plus INSTRUCTION MANUAL
13