Installation Instructions

9
m–6456
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Figure 19
1. Foam density adjustment
valve
2. Strainer
3. Check valve
4. Compressor
5. Couplers
6. Air filter
7. Air only
8. Liquid
9. To mixer tee
9. Start operating the marking system and make a test
pattern on the ground. When you first start the marking
system, allow 1 to 2 minutes for the foam to flow
through the line.
10. Adjust the foam density adjustment valve to obtain the
desired consistency and spray as normal.
Note: If you leave the foam in the line for more than 2
hours, it may become watery. Before operating after a break
of 2 or more hours, run the machine for 1 to 2 minutes to
remove the excess water.
Note: The mixer tee can flood if the solution-to-air mixture
is too rich, producing watery foam. If the foam is too dry,
the flow will be unsteady with high-pressure surges.
If the foam in the machine is very watery, do the following:
A. Close the foam density adjustment valve completely.
B. Operate for 2 minutes.
C. Wait 1 minute and then check the consistency of the
foam.
D. Adjust the foam to achieve the desired consistency.
Maintenance
Note: Determine the left and right sides of the machine from the normal operating position.
Recommended Maintenance Schedule
Maintenance Service
Interval
Maintenance Procedure
100 Hours
Inspect the hose between the foam tank and the compressor for accumulated
water.
Inspect and clean the check valve in the tee on top of the compressor. Replace
the valve if necessary.
Remove and clean the strainer at the top of the solenoid valve, next to the
compressor.
Ensure that the bottom of the compressor is free from debris.
250 Hours
Replace the compressor air filter.
Check for and rinse out debris from the inside of the tank.
500 Hours
Replace the plastic check valve at the “Y” near the mixer tee assembly, located
at the rear of the vehicle, on the center boom (Fig. 20).