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11.5 Correction of stroke length adjustment
IMPORTANT!
After replacing the diaphragm or other spare parts it might become necessary to
readjust the dosing pump.
Legend
1
Stroke length adjusting knob
2
Locking screw
1. Switch power on.
2. Regardless of the indicator position, loosen the locking screw and turn the stroke
length adjusting knob counterclockwise until the dosing pump no longer delivers
or, in the case of pressureless operation, only delivers minimum.
NOTICE!
Do not use force, while executing the following. Due to the elasticity of the dampening
ring slight movement of the diaphragm still remains even in position “0”.
If “zero delivery” could not be achieved, because the knob has reached the stop
position, remove the knob after further loosening the locking screw, turn it clockwise
and reattach it. Then adjust zero delivery.
CAUTION!
The discharge line must be routed back to the storage tank during setup in order to
prevent dosing excess chemical.
3. Attach knob so that the indicator is pointing to “0”. With the knob tightly held,
fasten locking screw.
4. Gauge the capacity of the dosing pump by liters according to a setting listed on the
calibration table. If there is a major discrepancy, correct the knob position.
NOTICE!
CAUTION!
IMPORTANT!
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