User's Manual

Maintenance
312753E 17
Cleanout Plunger Stroke Adjustment
The cleanout plunger stroke is properly set during fac-
tory assembly so that the cleanout plunger completely
clears the impingement chamber during a pour. Usually,
no adjustment is needed. However, for some applica-
tions where the chemical flow is on the lower end of the
MixHead flow range, improved mixing may be achieved
by adjusting the cleanout plunger so that it partially
blocks the impingement chamber leading into the exiting
chamber.
Tools Required
•Steel rod
• Hook spanner wrench
• Wrench MU1063: Models 5/8, 6/10, 10/14
• Wrench MU1080: Models 13/20 and 16/25
1. Relieve hydraulic pressure to zero and allow the
fluid to cool.
2. Record the original position of the adjusting plug in
relationship to the cylinder housing. This is done to
establish a reference point for restoring the cleanout
plunger to its original setting and for determining the
position of the cleanout plunger relative to the
impingement chamber.
a. Accurately measure and record the distance
that the adjusting plug extends above the shaft
nut.
b. Record the number of exposed threads of the
adjusting plug.
3. Loosen the shaft nut from the cylinder housing by
turning counterclockwise with the proper hook span-
ner wrench.
Adjusting
Plug
Shaft Nut
In the following step, there must be no hydraulic pres-
sure in the system when loosening the shaft nut from
the cylinder housing.
NOTICE
In the following step, do not exceed the following num-
ber of complete revolutions of the adjusting plug from
its original factory setting:
• Models 20.20.5/8 and 20.20.6/10: One
• Models 20.20.10/14: Two
• Models 20.20.13/20: Three
• Models 20.20.16/25: Four
Exceeding the above limits may result in chemical
cross-contamination of the MixHead due to complete
blockage of the impingement chamber.
Adjusting Plug
Shaft Nut