Troubleshooting; Handi-Gun Ii Tm Hi / Lo Module - ICP HANDI-FOAM Instrucciones De Operación

STEP 8: CHANGING CYLINDERS
Using the Pressure Test Gauge, open the valve to reduce the pressure in the cylinder to 75 to 100 psi before
attaching a new set of cylinders.
1. Completely close all valves on both the A-cylinder and B-cylinder:
• Magnum Heated Hose: close valves #8, #7, #6, #5 and #4
• 100' Gun Hose Assembly (non–heated): close valves #5 and #4.
2. Turn the regulator knobs on the Nitrogen Regulator (#1) counter-clockwise until they are free-spinning.
3. Remove the A-Side Red
4. Remove the B-Side Nitrogen Hose with Coupling (#3) from the Nitrogen On/Off Valve (#4).
5. Place a paper towel under both Cylinder Outlet On/Off Valves (#5) and remove the A-Side On/Off Valve,
Cylinder to Hose Filter With Temperature Gauge Assembly (#6) and the B-Side On/Off Valve, Cylinder to
Hose Filter With Temperature Gauge Assembly (#7). Be prepared as some chemical will dispense from the
cylinder-to-hose filter assembly (spray with Handi-Cleaner
chemical and reduce some of the mess.
6. Refer to steps 1 – 7 above for proper setup and startup procedures.
7. See "Returning Cylinders" on how to prepare the cylinders for being returned to ICP.
NOTE: Always change out both A and B-cylinders, even if one cylinder has not completely emptied.

TROUBLESHOOTING

For any technical service, contact ICP with a completed Daily Spray Log (A18013), Magnum Heated Hose serial
number (if applicable), cylinder serial numbers, product name and description.
• Dark crunchy foam – This is a sign that the foam has become A-rich. The system is off-ratio causing more
of the A-chemical to be sprayed than the B-chemical.
• Foam shrinkage within 24 hours – This is a sign that the foam may have been sprayed off-ratio and is B-rich.
Other reasons for shrinkage include substrates that are too hot, cold or wet.
• White spongy foam – This is a sign that the foam has become B-rich. The system is off-ratio causing more
of the B-chemical to be sprayed than the A-chemical.
• Sputtering from nozzle – This is a sign of empty cylinders, clogged nozzle, lack of nitrogen or a blockage in
the system.
Lack of expansion in sprayed foam – This problem could be associated with improper process (core)
•
chemical temperatures, clogged nozzles or spraying technique.
SOLUTION:
• STOP SPRAYING.
• Remove nozzle and spray chemical into a plastic garbage bag. Check to see that both chemicals are being
dispensed from the Handi-Gun
• Make sure all valves from the cylinder to the Handi-Gun are open.
• Check the process (core) chemical temperature using the in-line temperature gauge.
• Check cylinder pressures. If the nitrogen bottle is empty, then the pressures are not constantly maintained
throughout spraying and can cause off-ratio foam.
• Replace nozzle. If the nozzle has become clogged, the foam may become off-ratio.
• Make sure cylinders are not empty and all valves are open. Rock cylinders back and forth to determine that
they contain chemical.
• When spraying foam, allow a minimum of 15 minutes before applying more foam over freshly sprayed
foam. Spray in layers of 1–2" (2.5–5.1 cm) thick with each application. Trying to apply more than 2" (5.1 cm)
in a single spray will pack the foam and may result in lower expansion and chemical yields.
HANDI-GUN II HI / LO MODULE
TM
Hi Module:
• Similar output and manner as the
Handi-Gun
• Output is approximately
Hi
8 lbs. per minute*.
Lo
• Can be metered via trigger to
achieve an even lower output
if desired.
*Actual output may vary based on trigger pull, cylinder pressures, hose length and chemical formulation.
10
Nitrogen Hose with Coupling (#2) from the Nitrogen On/Off Valve (#4).
or Handi-Gun II
® TM
Lo Module:
Dispensing Unit.
®
® as needed). The paper towel will help catch this
in approximately equal streams. Perform a ratio test (see step 3).
• Output is reduced to
approximately 3 lbs per
minute*.
Hi
• Can be metered via
trigger to achieve an
even lower output if
desired.
Note:
• Switch must
X
be in the Hi or
Lo position in
Hi
order to operate
Lo
properly.