Graco BetaCell 241D, Операция

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57
Metering Pump Inlet Filter
Operation
The pump inlet filter is to prevent particulate matter from damaging the
precision metering pumps. The filter element is a bag type and should it
become clogged, it will cause cavitation of the pump resulting in damage
to the pump.
Therefore, it is necessary that the filter be properly
serviced at all times.
The Pre Polymer element is a 400 micron nylon bag and the Curative
element is a 150 micron nylon bag.
If the pressure at the inlet of the metering pump falls below the factory
setting of 40 psi, an alert warning will occur and both pumps will
shutdown. This is an indication that:
•
The filter may need to be serviced.
•
The buffer tank pressure is too low.
•
The buffer tank is not up to temperature.
Maintenance During the first week of operation, the filter should be opened and the bag
inspected. If the element is dirty, replace it. After the condition of the raw
material has been determined, the cleaning interval can be adjusted.
Service in accordance with the procedures in the Maintenance Manual.
Note: Do not attempt to clean the filter element, always replace it with a new
one.
Never check the filter prior to an extended shutdown as this may introduce
moist air into the system that will remain during the shutdown period and
may react with the chemical.
Caution: HAND
TIGHTEN ONLY