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Ratio Check
Machines equipped with
Pneumatic Dispense Valve Control
See Fig. 21
See the Pneumatic Dispense Valve Control
section of this manual for detailed information on
features. Supply pump pressures must be set prior
to performing a Ratio Check. See Table 1
Manual Ratio Valve
Refer to Fig. 27
1. Remove Outlet Mix Block and Mixer before
priming system. Install Manual Ratio
Assembly.
2. From Dispense Valve Control select A Feed
Auto. Select B Feed Auto. Select
Dispense Point Mix.
Automatic Ratio Valve
Refer to Fig. 26
2. From Dispense Valve Control select A Feed
Auto. Select B Feed Auto. Select
Dispense Point Ratio.
3. Place containers under A and B ratio valves.
Note: Record the empty container weight for
each component (tare weight). Container
size should be a minimum of 1 liter.
4. Turn Dispense switch to the ON position.
A1 and B1 Supply Rams will begin to pump.
Turn Dispense switch to the Off position
after approximately 10 seconds. Weigh A
and B containers for the gross weight.
Calculate the net weight for each material.
The formula is Gross-Tare= Net.
5.
Calculate the Weight Ratio A/B = Net weight
of A in grams / Net weight of B in grams.
6. Repeat steps 3-5 at least 5 times recording
the weight ratios. If the system is Off Ratio
proceed to the Troubleshooting section of
this manual.
Manual Ratio Valve
Refer to Fig. 27
7. Remove Manual Ratio Assembly and install
Mixer Assembly.
52
Machines equipped with Manual
Dispense Valve Control See Fig. 29
1. Close A and B Material Shut Off Valves.
2. Open Manual Dispense Valve to relief
pressure between A and B material shut off
valves and mixer.
3. Remove mixer assembly and install Manual
Ratio Assembly.
Ratio Handle in the closed position
4. Open A and B material shut off valves.
5. Place containers under A and B ratio valves.
Open Ratio Handle for several seconds to
prime ratio assembly.
6. Place containers under A and B ratio valves.
Note: Record the empty container weight for
each component (tare weight). Container
size should be a minimum of 1 liter.
7. Open Ratio Handle and dispense for
approximately 10 seconds. Weigh A and B
containers for the gross weight. Calculate
the net weight for each material. The
formula is Gross-Tare= Net.
8. Calculate the Weight Ratio A/B = Net weight
of A in grams / Net weight of B in grams.
9. Repeat steps 6-8 at least 5 times recording
the weight ratios. If the system is Off Ratio
proceed to the Troubleshooting section of
this manual.
10. Remove Manual Ratio Assembly and install
Mixer Assembly.
312767B
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