Graco InvisiPac HM10 Instructions Manual page 41

Hot melt delivery system
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2. Inspect the connection to make sure the plug is
fully seated and the connector is locked in place.
3. If the gun shows a valid temperature, but the hose
does not, the hose is likely damaged and should be
replaced.
4. If the gun temperature does not show up, but the
hose does, check the connections at the end of the
hose where the gun connects. Check to make sure
the correct RTD has been selected as well. Graco
guns will always use a Pt100/1000 setting on the
Gun Setup Screen.
D - This shows the current being drawn by each device.
It can be used to validate the device is drawing the
correct amount of current based on the wattage rating
on its label. Wattage/Voltage = Nominal Current. The
current draw will change with the Duty Cycle, explained
below.
1. If the current is lower than expected, make sure to
take the duty cycle into account. 50% duty should
be roughly half the expected current. It is best to
evaluate the device at 100% duty cycle.
2. If the current is 0A, and the duty cycle is 100%,
follow the proper procedures to check the fuses on
the AMZ. If the fuses are damaged, check the
device's heater for a short to ground. If the fuses
are undamaged, check the heater for an open
circuit.
E - Duty Cycle: This indicates how much power is being
applied to the heated device. During the warmup
process, it is expected to observe the melter at 100%
duty cycle, hoses and guns will fluctuate anywhere
from 0% to 100% during this process.
3A7259C
Power Diagnostics Screen
Select the Menu Symbol
the fourth tab.
A
B
C
A, B, C - The AMZ will detect incoming voltages, and
report them here.
D - The transformer is equipped with a temperature
sensor, this indicates the temperature here.
E - Indicates when the fan output is energized. The
system will monitor the current draw of the fan, and
generate advisories for under and over current
conditions. This is also a useful indicator to validate the
fan is circulating air when it is illuminated.
ADM Screens
> Diagnostics > select
D
E
41

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