Table of Contents
Advertisement
User Manual: Twin-Line Concentrate Doorway Foam Unit | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Maintenance Instructions:
To keep your foam unit operating properly, periodically perform
the following maintenance procedures:
Note: Before performing any maintenance, ensure that the
unit has been turned OFF, unplugged from the electrical power
source, and disconnected from the air/water supply.
• Inspect the pump for wear and leaks.
• Inspect all hoses for leaks or excessive wear. Make sure all
hose clamps and push-fittings are in good condition and
properly secured.
• Replace the filter located within the air regulator as
needed. Clean by unthreading the air regulator bowl from
the air regulator.
• Check the chemical metering tip, suction line and strainer
for debris and clean as needed.
• Drain your air compressor tank on a regular basis to help
extend pump life. An air source with a high moisture
content will accelerate pump wear. Note: If your air
source has a high moisture content, you may wish to
install a water separator (sold separately) before the unit.
Model No.: DS4, DS4K, DS4V
Troubleshooting Instructions:
• Check the air regulator bowl and air filter for debris such
as water, oil, or rust particles. Clean by unthreading the air
regulator bowl from the air regulator.
• If the needle valve is open too far, the pump may cycle
improperly due to lack of air pressure. If this occurs, close
and readjust the needle valve as described in Operation
Instruction #2.
• Make sure proper foaming chemical and concentration
are being used.
• If air passes through the pump without cycling, the pump
needs to be replaced.
• If solution backs up into the air regulator bowl, the check
valve needs to be replaced.
• If foam comes out wet, no matter where the needle valve
is positioned, the check valve may need to be replaced.
• Check for proper air pressure on the air gauge. The air
regulator is factory set at 50 psi (3.4 bar). Operating range
is 40 to 80 psi (3 to 5 bar) with 3.5 to 8 CFM (99 to 226.5 l/
min).
• If the unit operates at a reduced pressure:
o Check the air compressor supplying the unit. If the
pressure is less than 40 psi, turn the unit off until the
compressor can catch up.
o If the air supply is 50 psi (3.4 bar) or above, check the
air gauge, which should read near 50 psi (3.4 bar). If
the air gauge reads more or less than 50 psi (3.4 bar),
adjust the pressure by turning the knob on the top of
the air regulator.
• Check the chemical metering tip, suction line and strainer
for debris or damage. Clean or replace as needed. To
prevent damage to the unit, the strainer must always be
used.
• Check for proper water pressure on the water pressure
gauge. To check the pressure:
o
Activate the unit and allow it to run through an on
time cycle.
o
During the subsequent off time cycle, check the water
pressure gauge. The pressure should read 30 psi (2.1
bar) during the off time cycle or when deadheaded.
o
If necessary, adjust the water regulator using the
flathead screw on the regulator body. The water
pressure should be set at 30 psi (2.1 bar) when
deadheaded. Setting the pressure higher or lower
may damage the unit or cause it to malfunction.
Page 7 of 10 | 20180404
Advertisement
Table of Contents
