Alemite 8323 Manuale d'uso e manutenzione - Pagina 18
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PUMPING HAZARDOUS LIQUIDS
When a diaphragm fails, the pumped
liquid or fumes enter the air end of the
pump. Fumes are exhausted into
the surrounding environment. When
pumping hazardous or toxic materials,
the exhaust air must be piped to an
appropriate area for safe disposal. See
illustration #1 at right.
This pump can be submerged if
the pump materials of construction
are compatible with the liquid being
pumped. The air exhaust must be
piped above the liquid level. See
illustration #2 at right. Piping used for
the air exhaust must not be smaller
than 1" (2.54 cm) diameter. Reducing
the pipe size will restrict air low and
reduce pump performance. When the
pumped product source is at a higher
level than the pump (looded suction
condition), pipe the exhaust higher than
the product source to prevent siphoning
spills. See illustration #3 at right.
CONVERTING THE PUMP FOR
PIPING THE EXHAUST AIR
The following steps are necessary
to convert the pump to pipe the exhaust
air away from the pump.
Remove the muffler. The air
distribution valve (item 1) has 1" NPT
threads for piped exhaust.
Alemite s1fmdl1sm-rev0211
IMPORTANT INSTALLATION
NOTE: The manufacturer recommends
installing a lexible conductive hose
or connection between the pump
and any rigid plumbing. This reduces
stresses on the molded threads of the
air exhaust port. Failure to do so may
result in damage to the air distribution
valve body.
Any piping or hose connected to
the pump's air exhaust port must be
conductive and physically supported.
Failure to support these connections
could also result in damage to the air
distribution valve body.
Air Valve
Assembly
1
CONVERTED EXHAUST ILLUSTRATION
PUMP INSTALLATION AREA
1" DIAMETER AIR
EXHAUST PIPING
Illustration #1
LIQUID
LEVEL
SUCTION
LINE
Illustration #2
LIQUID
LEVEL
SUCTION
LINE
Illustration #3
SAFE AIR
EXHAUST
DISPOSAL
AREA
MUFFLER
MUFFLER
1" DIAMETER AIR
EXHAUST PIPING
MUFFLER
1" DIAMETER AIR
EXHAUST PIPING
Models 8323 & 8323-A Page 16