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Settings
Flow-Rate Display Filter
See F
. 15 on page 29 for more information.
IG
MixHead Settings
MixHead On/Off
The MixHead must be turned on to dispense chemical.
When the MixHead is turned off, "dry cycling" will be
enabled but will not occur unless all conditions required
for starting a pour are met. Dry cycling is when the
machine does everything necessary to do a pour with-
out opening the material piston so that material is not
dispensed.
To "dry cycle" the machine, execute a pour without turn-
ing on the MixHead. The machine will go through the
normal cycle for pouring, without dispensing material,
and if anything is not running correctly an alarm will be
triggered. Dry cycling is useful when an alarm has been
triggered and the cause of the alarm needs to be found.
In that situation, reset the alarm, attempt to fix the prob-
lem, and "dry cycle" the machine to test whether the
problem has been corrected, without wasting any mate-
rial.
Chemical Flow Settings
Adjusting Chemical Line Pressures
Having pressure equal between the iso and poly lines is
important for proper mixing. The usual guideline for
proper mixing is to have the difference in pressures less
than a few hundred psi. Whenever the pressures are not
equal adjust the chemical line pressures, using the back
pressure regulator valves.
See Setup Screen on page 26 and Machine Con-
trol Screen on page 22 for details about changing
the following settings.
•
Main and Control Power on
•
Night Mode must be off
•
Appropriate Metering Pump Motors must be on
48
When the preceding requirements are met:
1. Select manual mode and high pressure override to
put the machine into high-pressure circulation.
The pressure for the two chemical lines should be
within 200 psi to avoid chemical crossover at the
MixHead. Chemical crossover will lead to chemi-
cals mixing and curing within the MixHead and will
require more frequent MixHead rebuilding.
2. When the chemical line pressures are within
200 psi, turn off the high pressure override.
Adjusting Metering Pump Motor RPM
If Variable Frequency Drive is installed then the meter-
ing pump motor rpm can be adjusted individually for
both metering pump motors. This is done using the Flow
Control Screen on the HMI, see F
1. Navigate to the Flow Control screen.
2. Under the "Flow Control" heading, select "Manual"
mode.
3. Under "Manual Mode Setpoints," type in the desired
metering pump motor percent for each motor.
Day Tank Settings
Adjusting Day Tank Air Pressure
Tank fumes will discharge when opening the day tank
manual vent valve.
NOTICE
Do not allow the pressure to drop below 5 psi as this
may introduce moist air to the system. This is espe-
cially important during periods of extended shutdown.
See Moisture Sensitivity of Isocyanates, page 7.
1. Stop incoming air by closing the day tank incoming
air valve (MK), see F
2. Open day tank manual vent valve (MB).
. 14 on page 27.
IG
. 17 on page 32.
IG
313813A
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Troubleshooting
