DCF-3000 Installation, Operation & Maintenance
DOM0000007, Revision A
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Page 2 of 7
Elastomers
Lid actuator rod packing – Urethane, Teflon
®
, Viton
®
and Gylon
®
/
Viton
®
are available.
Lid upper and lower element elastomer – EPT, Viton
®
and White
Nitrile (food grade) are available.
Cleaning disc blades – Delrin
®
and PEEK are available
Solid Removal Limit
Process stream should contain no more than 500 PPM of strainable
solids by weight or volume (whichever is larger).
Design Pressures
Service:
150 PSIG (1035 kPa) maximum, 30 PSIG (207 kPa)
minimum.
Differential: Maximum differential pressure for slotted media is 50
PSID (345 kPa).
Design Temperature
Temperature limits vary based on process liquid, elastomers and
cleaning disc materials. Normally this temperature is limited to 200 °F
(93 °C).
WARNING: Do not operate filter with superheated
fluids (fluids that are above their boiling points at
atmospheric pressure). Operating the purge valve
with superheated fluids may result in a BLEVE
(boiling liquid expanding vapor explosion).
FAILURE TO FOLLOW THIS WARNING MAY LEAD TO DEATH,
SEVERE INJURY OR PROPERTY DAMAGE.
Filter Volume
Filter vessel:
48.8 US Gallons
(185 L)
Purge chamber:
3.2 US Gallons
(12 L)
Airborne Noise Emissions
<70dB (A) during normal operation
Installation
This document applies to the installation of the filter vessel. See
additional instructions for the installation of any filter unit controls.
Transportation
Move the filter system as close as possible to the installation site
before it is removed from the crate or skid. Position the filter frame on
a prepared, level foundation. Level the filter frame before it is
anchored to the foundation.
Securing to Foundation
Anchor the filter frame legs to the foundation using the six, 5/8
″
diameter anchor holes located at the base of each frame leg.
Connect the stand grounding tab to a suitable earth ground point.
WARNING: Do not remove vessel from included
frame assembly. The unit is not intended to self-
support by the process connections.
FAILURE TO FOLLOW THIS WARNING MAY LEAD TO DEATH,
SEVERE INJURY OR PROPERTY DAMAGE.
Connecting to Process Piping
1.
Attach the inlet and outlet connections to the interconnecting
piping (customer supplied). Take care to avoid excessive nozzle
loading at the filter connections. Consult your pump
manufacturers’ installation guide for minimum pipe run length
between the pump outlet and the inlet of the filter unit.
Notice:
Isolation/block valves (supplied by others) are
required on all process connections on the filter unit.
These valves allow the filter to be isolated from the
process liquid in the event that service is required.
Pressure gauges are also recommended on all
process connections.
2.
Connect the drain line (customer supplied) to the filter unit purge
valve. To avoid restricting purge flow, the drain line should be: 1)
the same size as the purge valve or larger, 2) as short as
possible and 3) at or on a lower grade than the purge valve.
Checklist
Verify that all process connections are secure and free of leaks.
Check the condition of the filter element. It should be clean and
free of damage.
Confirm that the top and bottom element seals are installed
properly.
Confirm that proper element type be used, as process requires.
Confirm that the gasket sealing the lid to the filter housing is in
good condition and properly installed.
Check Star packing wheel and tighten as required. Urethane
seal requires only finger tight.
Confirm that the element hold-down plate and 3/8-16 socket
head cap screws are installed properly.
Verify that all lid bolts are tight. The lid bolt torque spec is 45 ft.-
lbs. Do not over tighten. Damage may occur to the lid O-ring and
flange surfaces if overtightened.
In its “home” position, the actuators of the filter should be
extended and the crossbar in the raised position.
Verify that the cleaning disc can be activated manually and
automatically if so equipped.
Verify that the purge valve is operable and normally in the
closed position for operation and start-up.
Check that the purge discharge line is directed in a suitable
fashion to accept waste when purged.
Check the safety switch is operable and functional. When
triggered, it should extend the actuators and put the crossbar in
the raised position.
Commissioning Procedure
1.
Inspect the piping connections to the filter. Verify that the inlet
connection on the filter is connected to the pipe containing the
incoming process fluid. Repeat this procedure for the outlet and
purge connections.
2.
All isolation valves to the filter should be closed. If there is a
bypass loop around the filter, that loop should be closed to
prevent back flushing dirty process fluid into the filter.
Do not
stroke the cleaning disc actuators when isolation valves are
closed.
3.
Open the isolation valve for the outlet piping.
4.
If this filter is supplied with a control package, turn on the power
to the filter system controls.
5.
Open the inlet isolation valve to allow approximately 25% of the
flow to reach the filter.
Notice:
Opening the inlet valve to the fully open
position without proper ramping may cause particles to
become wedged into the filter screen. If this happens,
the screen will have to be removed and cleaned
manually.
6.
Over the next ½ hour, slowly introduce more of the flow until you
reach 100%. You may want to manually initiate a purge during
this time to ensure that piping debris is cleaned from the unit.
