Foam Marker System

Symptom Problem Solution

No foam coming out

Air not blowing into tank.

Make sure lines into compressor are connected properly.

Compressor not running.

Check fuses/wiring/brushes.

Damaged or pinched air and/or liquid lines.

Repair lines.

Not enough solution in tank.

Fill solution tank.

Tank not pressurized.

Check for leaks.

Hard water.

Use water softener.

Poor quality concentrate.

Use proper concentrate.

Threaded tank cap improperly installed.

Install properly.

Vent valve open.

Close valve.

In-line filter clogged.

Clean filter.

Flow control valve closed.

Open valve approximately 2 turns.

Air shut-off diaphragm is stuck.

Clean air shut-off valves.

Anti-siphon valves not operating.

Repair or replace valves.

Electric air shut-off valves not working.

Repair or replace electric valves.

Solution in tank is old.

Drain tank, rinse and mix fresh solution.

Hi-lo valve not working.

Repair or replace.

NXH8,M68440,L10 -19-13JAN99-1/2


Symptom Problem Solution

Not enough foam

Not enough foam concentrate in solution.

Increase concentrate.

Damaged or pinched air and/or liquid lines.

Repair lines.

Clogged in-line filter or foamer heads.

Clean.

Liquid flow control valve set too low.

Increase liquid flow.

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.

Foam too wet

Not enough foam concentrate in solution.

Increase concentrate.

Clogged in-line filter or foamer heads.

Clean.

Liquid flow control valve set too high.

Decrease liquid flow.

Foam is surging

Too much foam concentrate in solution.

Decrease concentrate.

Solution runs out quickly

Not enough foam concentrate in solution.

Increase concentrate.

Liquid flow control valve set too high.

Decrease liquid flow.

Foam blowing in windy conditions

Foam too light.

Mix solution with less concentrate or more water.

NXH8,M68440,L10 -19-13JAN99-2/2