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SELECTED MODELS - SPECIAL INSTRUCTIONS
This section relates SPECIAL information about a few selected models.
MICRO PULSE
Micro Pulse valves are available on models:
GB/WSB MB (MICRO Blender) with optional MICRO PULSE valves.
GB/WSB 122 with optional MICRO PULSE valves.
GB/WSB 131 with optional MICRO PULSE valves.
GB/WSB 140 with optional MICRO PULSE valves.
GB/WSB 240R with optional MICRO PULSE valves.
GB/WSB 440R with optional MICRO PULSE valves.
These models may use our "MICRO PULSE" metering system for Color and
Additive components.
PULSED OUTPUT parameters control the on/off timing, or pulsing, of the
valves. The controlling parameters are the "_PO" component parameters.
When set to 00000, normal slide gate operation occurs.
When set to a value, such as 00101, power will pulse ON then OFF, at
1/10 second time intervals each way. This ON/OFF cycling will repeat
for the entire dispense time.
When using a MICRO PULSE valve, you must set the related _PO parameter
to 00101.
If overall blender throughput is too low, you may increase the metering
rate of each Micro Pulse device by adjusting the cylinder air flow
control valves for higher flow rate. This causes more rapid movement
of the cylinder, ejecting more pellets per pulse. The drawback is
noisy operation.
We recommend air flow be adjusted for quiet operation, but assuring
full valve movement per on/off cycle. We have already done this. No
further adjustment should be necessary.
The approximate correct adjustments are:
At nose of cylinder, 1.5 full turns out from full closed.
At rear of cylinder, 2.5 full turns out from full closed.
MICRO BLENDER slant valves, adjust by sound.
On fixed hoppers with horizontal micro pulse valves, CLEAN OUT of the
hopper can be accomplished by opening the "clean out" port provided
under the valve. Turn to one side to allow material to drain.
MICRO PULSE - ACCURACY
All MICRO PULSE valves are more accurate if the associated PT parameter
is set to 00090. Read PT parameter in the PARAMETER section.
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