Maintenance
312359R 59
Hopper
Clean Inlet Strainer Screen
The inlet strainers filter out particles that can plug the
pump inlet check valves. Inspect the screens daily as
part of the startup routine, and clean as required.
1. Ensure that all pumps are shut off and close the
Y-strainer valve (ES).
2. Place a container under the strainer base to catch
drain off when removing the strainer plug.
3. Remove the screen from the strainer manifold.
Thoroughly flush the mesh screen (MS) with
compatible solvent and shake it dry.
4. Inspect the screen. No more than 25% of the mesh
should be restricted. If more than 25% of the mesh
is blocked, replace the screen. Inspect the gasket
and replace as needed. See your heated hopper
manual for replacement components.
5. Ensure that the pipe plug (PP) is screwed into the
strainer plug (SP). Install the strainer plug (SP) with
the mesh screen (MS) and gasket (SG) in place and
tighten. Do not over tighten the strainer plug--let the
gasket make the seal.
6. Open the Y-strainer valve (ES). Ensure that there
are no leaks and wipe the equipment clean.
Check Heating Fluid Level
Gradual fluid evaporation can occur. Check the level of
heating fluid monthly. Add fluid as needed.
Drain Heating Fluid
Replace heating fluid once a year to improve heating
efficiency and increase heater element life. Keep the
heating element above the sediment deposits. Sediment
deposits will drain out from the heating fluid drain valve
(EJ).
NOTE: The immersion heater will not operate in
sediment deposits.
SP
SG
MS
ES
PP
NOTICE
Freezing temperatures can cause damage that may
result in the heating fluid leaking into the terminal
enclosure. To avoid damage, do not expose the unit to
freezing conditions.
Maximum
sediment
level
EJ
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