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12780 San Fernando Road, Sylmar, California 91342 | www.semcopackaging.com | Email: semcoinfo@PPG.com
11. Mixer setting adjustments (cont.)
Calibration – stroke speed
Speed is set with 6 oz.-8" cartridge kit filled with water.
Using another kit size will affect the stroke speed, i.e., 2.5
oz. will be faster, 8 oz. will be slower at the same setting.
The stroke setting determines the total mixing ‘work’ goes
into the cartridge at a given motor speed.
1. Install 6 oz.-8" cartridge kit on the mixer and activate
machine.
2. Remove rear panel.
3. On lower section of the mixer, the main cylinder moves
the cartridge holder up/down.
The stroke speed is adjusted by opening/closing the
flow valves at the top and bottom of the main air
cylinder
Using small flathead screwdriver, turn both upper and
lower flow valves equally to adjust stroke speed. Start
with half turns of the set screw (do NOT turn the
hexagonal fitting head), then measure stroke speed
with stopwatch and repeat as needed. (20 +/-2 per
minute)
Clockwise: Slower
Counter-clockwise: Faster
4. When done, reinstall rear panel.
Calibration – Pressure Regulators
There are 2 pressure regulators in the mixer. One to control
the cartridge up speed and the other to apply pressure to the
plunger during mixing. They are factory set according to their
function and maintained by a locknut or locking cap. It is not
necessary to check the regulators unless there is an
observable problem with excess sealant ‘weeping’ or air
content or the cartridge up function is too fast/slow. The
factory settings are as follows:
Cartridge Pusher Regulator – 37psi
Cartridge Up Button Regulator – 22psi
The regulators cannot be accurately adjusted while installed
on the mixer. An external dedicated pressure indicator circuit
is needed to properly adjust. Please note the cartridge up
regulator is set to improve operator safety while
installing Semkits. Take caution in adjusting pressure.
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