Liquid Controls Strainers F-7, FA-7, F-15, F-30 & Steel Series - Manual (Page 7)

7
hoW To oRdeR RePlaCemenT PaRTs & TRoUbleshooTInG
PRoblem 1
Meter lockup; rotors do not turn.
PRobable CaUse a
Strainer basket rupture possibly due to improper maintenance of
the strainer basket. If this occurred in a new system, the system
may have been improperly flushed.
solUTIon a
Replace the strainer basket and follow proper strainer maintenance
procedures. New systems should be flushed. In all systems, the
meter chamber will require cleaning and may require replacement of
parts. Refer to your meter Installation, Operation and Maintenance
Manual for meter maintenance procedures or contact your full
service distributor.
PRobable CaUse b
Debris entered the metering chamber possibly due to improper
cleaning during strainer maintenance. (i.e. dirt dislodged into the
strainer housing when the basket was removed for cleaning.)
solUTIon b
Properly clean the strainer housing as outlined in the Maintenance
section of this book. The meter chamber will require cleaning and
may require replacement of parts. Refer to your meter Installation,
Operation and Maintenance Manual for meter maintenance
procedures or contact your full service distributor.
PRobable CaUse C
Denting or distortion of the strainer basket which opened gaps and
allowed foreign particles to pass through to the meter chamber.
This is usually caused by improper handling of the strainer basket
during maintenance.
solUTIon C
Replace the strainer basket and follow proper strainer maintenance
procedures. The meter chamber will require cleaning and may
require replacement of parts. Refer to your meter Installation,
Operation and Maintencance Manual for meter maintenance
procedures or contact your full service distributor.
PRoblem 2
Meter inspection due to meter inaccuracy revealed
scoring of the meter chamber.
PRobable CaUse a
See the probable causes for Problem 1.
solUTIons a
See the solutions for Problem 1. However, if inspection does
not reveal a ruptured strainer basket and it is known that proper
maintenance cleaning procedures were followed, contact your full
service distributor.
how to order Replacement Parts
1. Refer to the exploded view drawings on pages 8-15. Find the four-digit item number of the part that needs replaced. Item numbers
are listed on the exploded drawings.
2. In the red Owner’s Information Packet, you will find a computer printout titled Parts List. The Parts List lists each item number
alongside a five-digit part number. The part number identifies the specific individual piece, kit, or complete assembly used to
assemble that particular meter.
3. Contact your distributor and give them the five-digit part number. Your distributor will use it to find the correct part for your strainer.
PRoblem 3
High pressure drop across the strainer or loss of
flow rate.
PRobable CaUse a
Strainer basket screen is partially blocked by foreign material such
as dried material or salted out solid particles due to drying.
solUTIon a
Properly clean the strainer housing as outlined in the Maintenance
section. The meter chamber may require cleaning and replacement
parts. Refer to your meter Installation, Operation and Maintenance
Manual for meter maintenance procedures or contact your full
service distributor.
PRobable CaUse b
Inner mesh of the strainer basket is not properly sized for viscosity
of the product.
solUTIon b
Replace the strainer basket with a basket correctly suited for the
product.
PRoblem 4
Leaking at the strainer basket cover.
PRobable CaUse a
The seals are allowing product to leak. This is caused by a
damaged o-ring or gasket seal, or reusing a PTFE seal after
strainer maintenance.
solUTIon a
Replace the damaged seals. Replace PTFE seals if they were
reused even if they are in good condition.
PRobable CaUse b
Dirty areas that are preventing the seals from making complete
contact.
solUTIon b
Clean the strainer housing as outlined in the Maintenance section.
Remember to replace PTFE seals and never to reuse them.
Troubleshooting