Instruction manual

MSSM0213AE/89457V (1 of 2)
ÈRULES FOR THE FIELD INSTALLATION OF
PUMPED-TYPE LIQUID SUPPLY SYSTEMS
APPLICABILITY: All Washer-Extractor Models
ÊGENERAL
Pellerin Milnor Corporation does not guarantee machines against damage from corrosion caused
by improper installation and/or operation of pumped-type liquid supply systems. The following
precautions must be observed when pumps are used:
1. Always install the pumping unit lower than the dis-
charge end of the chemical delivery tube as shown
at right. This will prevent any excess chemical con-
centrate from dribbling out of the tube and onto
unprotected machine surfaces when the machine is
idle.
Merely putting a "drip loop" in the delivery tube
won’t help much. (It might reduce the dribble a
little, but not enough to prevent damage.)
The real
solution is to install the pumps below the dis-
charge end of the delivery tubes so excess chemical
won’t dribble out of the tube long after the pumps
stop.
2. If the machine is also equipped with a flushing supply injector:
a. Always wire the new system so the appropri-
ate flushing valve also operates whenever
chemical is being injected. This will dilute
the concentrated chemical with obvious ad-
vantages. If possible, the water flushing valve
should remain on for a minimum of 30 sec-
onds after the longest injection time for that
chemical.
b. Always inject the chemical into a plastic cup
(and direct the flushing water into the same
cup). This way, any chemical that dribbles out
Discharge end
of delivery tube
Pump (below
discharge end
of delivery tube)
Flush valve ON
when pump is
operating
Supply
tube feeds
into cup
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