Conair WSB User Manual
Page 88
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¦ PART VI - HARDWARE MAINTENANCE ¦
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HARDWARE ADJUSTMENTS
AIR PRESSURE
Set AIR PRESSURE to about 80 PSI for best accuracy. However, lower
pressures will work. If you plant air fluctuates, set the regulator to
the low end so that the dispense valves always see a consistent
pressure. Lubricated air is NOT recommended. Micro Blenders should be
set to 40 PSI (2.7 bar). Vertical Valves used in removable hoppers on
Micro Blenders, and 100 and 200 series blenders, are more accurate at
60 PSI pressure setting.
LEVEL SENSOR
Sensor position:
On 200 and 400 models, the sensor should protrude into the mix
chamber about 1/4 inch past the inside surface of the stainless
mounting plate. If it does not protrude far enough, it will sense
the mounting plate itself. If it protrudes too far, it will sense
the mix blade. Relocate if necessary.
Adjusting sensor sensitivity:
1. A sensor adjustment is located on the back of the sensor. A small
thin screwdriver is required. Some sensors have a black plastic
cover that must be removed for access to the adjusting screw.
2. Fill the mix chamber until the sensor is about 3/4 covered.
3. Turn screw counter-clockwise until the LED goes OFF.
4. Then turn clockwise until the LED just goes ON.
5. Empty the chamber and check to be sure the sensor LED stays
OFF when the mix blade passes near it.
6. If applicable, replace the plastic access cover screw.
NOTE: 18 mm sensors, LED logic is reversed, ON when UNCOVERED.
WEIGH BIN DUMP VALVE (SOFT CLOSE)
The WEIGH BIN DUMP VALVE should be adjusted to close softly. An
air flow needle valve is installed near the quick disconnect so that
air flow to the weigh bin air cylinder may be restricted. Adjust as
required for a soft close.
SLIDE VALVES
Slide valves must move very freely. If they seem to jam slightly
in the full extended position (closed), this may be due to the cylinder
mount being bent. Lifting the blender by the air cylinders, or
standing on them will cause this. You can correct this by pressing up
or down on the cylinder as required to straighten the mount.
If you process very hard pellets (polycarbinate and glass filled
resins), your slide gate dispense valves may stick closed occasionally.
We provide spacers that limit the full stoke of the air cylinder. This
stops the slide from going any further then the just closed position
and prevents jamming. Call us for information.
INTERNAL MIX MOTOR and AUGER FEEDER FUSES
The MIX MOTOR and AUGER FEEDER OUTLETS are driven by internal solid
state plug-in relays. 5 amp glass fuses are located to the right of
each relay. A spare fuse is also located on the board.
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