|
No foam coming out
|
Check system for air and solution leaks.
|
Correct leaks.
|
|
|
Not enough solution in tank.
|
Fill solution tank.
|
|
|
Check valve plugged.
|
Clean or replace check valve.
|
|
|
Air mixing chamber diaphragm is stuck.
|
Clean or replace diaphragm in air mixing chamber valves.
|
|
|
Damaged or pinched air and/or liquid lines.
|
Repair lines.
|
|
|
Flow control valve closed.
|
Open valve approximately 2 turns.
|
|
|
Air not blowing into tank.
|
Make sure lines into compressor are connected properly.
|
|
|
Vent valve open.
|
Close valve.
|
|
|
Tank not pressurized.
|
Check for leaks.
|
|
|
Threaded tank cap improperly installed.
|
Install properly.
|
|
|
In-line filter clogged.
|
Clean filter.
|
|
|
Solution in tank is old.
|
Drain tank, rinse and mix fresh solution.
|
|
|
Poor quality concentrate.
|
Use proper concentrate.
|
|
|
Hard water.
|
Use water softener.
|
|
|
Electric air shut-off valves not working.
|
Repair or replace electric valves.
|
|
|
Anti-siphon valves not operating.
|
Repair or replace valves.
|
|
|
Hi-lo valve not working.
|
Repair or replace.
|
|
|
Air shut-off valve not working.
|
Repair or replace valve.
|
|
|
Air shut-off valve plugged.
|
Remove debris from valve.
|
| Symptom |
Problem |
Solution |
|
|
Foamer set to "OFF" on GSD.
|
Set to "Low" or "High" in "Manual" or "Auto" modes.
|
|
|
Foamer power supply fuse blown.
|
Replace fuse.
|
|
|
Check valves near mixing chamber installed backwards.
|
Install correctly.
|
|
|
OBA tank petcock open.
|
Close petcock.
|
|
Not enough foam
|
Liquid flow control valve set too low.
|
Increase liquid flow.
|
|
|
Not enough foam concentrate in solution.
|
Increase concentrate.
|
|
|
Damaged or pinched air and/or liquid lines.
|
Repair lines.
|
|
|
Hard water.
|
Use water softener or increase concentrate.
|
|
|
Clogged in-line filter or foamer heads.
|
Clean.
|
|
|
Poor quality concentrate.
|
Use proper concentrate.
|
|
|
Air pressure set too low.
|
Increase pressure.
|
|
|
GSD set to "Low" mode.
|
Set to "HIGH" mode.
|
|
Foam will not last
|
Not enough foam concentrate in solution.
|
Increase concentrate.
|
|
|
Poor quality concentrate.
|
Use appropriate concentrate.
|
|
|
Collector heads not installed.
|
Install collector heads.
|
|
|
Collector heads not clean.
|
Clean collector heads.
|
|
Foam too wet
|
Liquid flow control valve set too high.
|
Decrease liquid flow.
|
|
|
Not enough foam concentrate in solution.
|
Increase concentrate.
|
|
|
Clogged in-line filter or foamer heads.
|
Clean.
|
| Symptom |
Problem |
Solution |
|
Foam is surging
|
Too much foam concentrate in solution.
|
Decrease concentrate.
|
|
Solution runs out quickly
|
Liquid flow control valve set too high.
|
Decrease liquid flow.
|
|
|
Not enough foam concentrate in solution.
|
Increase concentrate.
|
|
|
Air pressure set too low.
|
Increase pressure.
|
|
Foam blowing in windy conditions
|
Foam too light.
|
Mix solution with less concentrate or more water.
|
|
|
Collector heads not installed.
|
Install collector heads.
|
|
|
Liquid flow control valve set too low.
|
Increase liquid flow.
|
|
Foam only comes out of one side.
|
Check valve plugged.
|
Clean or replace check valve.
|
|
|
Shut-off diaphragm leaking.
|
See Replace Shut-Off Diaphragm in Lube and Maintenance - Foam Marker section
|
|
Foam does not shut off.
|
Debris in solenoid
|
Remove debris.
|
|
|
Hole or kink in shut-off line.
|
Replace line.
|
|
|
Mixing chamber diaphragm torn.
|
Replace diaphragm.
|
|
Inner/Outer drops "ON" or "OFF" at wrong times.
|
Ground wire in cab panel poorly grounded.
|
Clean grounding points and verify connections tight.
|