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INSTALLATION DO'S & DON'TS
DO: Read entire manual before installation. If
you need further information, contact MAX and
ask for Flow Meter Technical Service.
DO: Install proper filtration immediately
upstream of the flow meter.
DO: Install the meter in the pressurized/
upstream section of the circuit if the working
fluid is prone to cavitation (thin fluids or low
boiling points).
DO: Install bypass plumbing around the flow
meter. Use the bypass during start-up while
flushing the system to (1) remove dirt by
filtration and (2) bleed air and vapor from the
system. Open the meter valves slowly on start-up
to avoid over-speeding the meter with entrapped
air. The bypass also allows removal of the meter
for service without disabling the system.
DO: Be very careful to keep all parts clean during
installation or tear down. In particular, ensure
that no metal shavings from inserting the pipe
fittings end up in the meter. Particles larger
than a few thousandths of an inch can cause
significant damage to the meter.
DO: Add protective sealants to exposed socket
head cap screws if meter is used in a highly
corrosive environment.
DON'T: Ever apply more pressure to the meter
than its pressure rating. In particular beware of
sudden spikes, surges or hammering that may
occur. If pressure limits are exceeded, return the
meter to the factory for inspection and repair.
DON'T: Run water or aqueous solutions not
approved by MAX through your flow meter as it
may cause internal galling.
DON'T: Steam clean the meter (bypass or
remove the meter if necessary).
DON'T: Disassemble the flow meter. These are
precision devices which require special tools and
techniques.
DON'T: Blow through the meter with compressed
air, gas, etc., because it can easily be over-sped
and may result in damage to the meter.
DON'T: Turn on the pump if the meter is
filled with material which is a solid at room
temperature until the material has been melted
completely. Use a bypass around the meter
during start up.
DON'T: Apply excessive differential pressure
across meter (see pressure drop graphs) as it will
cause internal parts to fail prematurely.
DON'T: Exceed the maximum flow rates specified
(see performance curves) as it will cause internal
parts to fail prematurely.
DON'T: Operate the meter at a flow rate where
the fluid is cavitating inside the meter.
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