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for the pressure gauges are included as standard from
the factory.
Normally when differential pressure reaches 5-10psi,
the screen must be cleaned. The strainer is equipped
with a blow-down port on the cover plate. To clean
open and flush out until any sediment is removed
Units with Pump Package
For units with optional pump package, the factory-
installed water strainer is a Y-type design with a
cylindrical sieve.
Figure 51.
Y—type strainer, units without pump
package
Pump Package Maintenance
Pumps not immediately placed into service, or
removed from service and stored, must be properly
prepared to prevent excessive rusting.
•
Pump port protection plates must not be removed
until the pump is ready to connect to the piping.
•
Rotate the shaft periodically (at least monthly) to
keep rotating element free and bearings fully
functional.
•
For long term storage (3 months or longer), prevent
internal rust buildup and possibility of freezing by
performing the following steps:
–
Remove the plugs at the top and bottom of the
casing.
–
If water is to be drained:
•
Disconnect evaporator and piping heaters.
•
Drain or blow out all water.
–
As an optional step, it is acceptable to rustproof
or pack the casing with moisture absorbing
material and cover the flanges.
When returning pumps to service :
•
Remove drying agent from the pump, if used.
•
Reinstall plugs at the top and bottom of the casing.
•
If water had been drained:
–
Refill water.
–
Reconnect evaporator and piping heaters .