Graco Therm-O-Flow 200 Instructions - Parts Manual page 41

Code Description
DC X Pump Diving
L1 X Material Level Sen-
sor Error
L2 X Material Level Empty Alarm
L3 X Material Level Low
MMUX USB Log Full
MN X Pump _ Requires
Maintenance
T1 _
Low Temp. Unit _
Zone _
T2 _
Low Temp. Unit _
Zone _
T3 _
High Temp. Unit _
Zone _
T4C#
AWB Temperature
Runaway
Transformer
334130L
Type Cause
Alarm
Pump is trying
to feed
adhesive, no
adhesive to
feed.
Worn or
damaged
pump seals
Alarm
Machine is
detecting an
empty state
without a low
state
Material drum
is empty
Deviation Material level
is low
Advisory
USB logs fulls.
Data loss will
occur if not
downloaded.
Advisory
User defined
pump
maintenance
counter has
run out
Alarm
Zone
temperature
too low
Deviation Zone tem-
perature too
low
Deviation
Temperature
reading has
risen too high
Alarm
Cooling fan not
working or inlet
is blocked/dirty
Solution
Adjust the drum empty level sensor to detect an
empty state.
Ensure the ram director valve is in the down
position and sufficient air is forcing the ram
down.
Melter at incorrect temperature, too low. Check
setpoint and set to manufactures
recommendation.
Inspect pump seals and replace if necessary
Make sure the empty level sensor is not
covered in material
Verify the low level sensor is plugged into J15
of the daughter board. Verify the low level
sensor is close enough to the metal bar; adjust
if necessary.
Replace sensors.
Replace material container. If more material is
leftover, lower the empty level sensor.
Replace at appropriate time.
Download USB data or disable the USB log
errors on the Advanced screen 3.
Perform pump maintenance, then reset the
counter on the maintenance setup screen.
Reduce flow rate.
Increase temperature of accessory upstream.
Faulty accessory heater measure resistance
between heater leads.
Change Low Temp Alarm Offset.
Replace accessory.
Reduce flow rate.
Change Low Temp Deviation Offset.
Add zone (temperature) upstream.
Change High Temp Deviation Offset.
Verify setpoint upstream is not hotter than this
zone's setpoint.
Ensure inlet and outlets are not obstructed.
Verify fan is plugged in.
Troubleshooting
41