Nordson AltaBlueA4TP, Customer Product Manual

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Operation
4-14
Part 1107600_03 2014 Nordson Corporation
Monitor Melter Faults
The melter alerts the operator to the faults listed in Table 4‐2. Faults affect
the melter in one of three ways: the heaters turn off; the heaters remain on,
but the fault condition persists; or the melter stops functioning.
When a fault occurs, you must diagnose and correct the fault condition and
then place the melter back into operation. You can use the fault log to
determine the type, order, and relative time of the last ten faults.
Table 4‐2 Melter Faults
Display
Code/Sub‐code
Name Affect on Melter Cause Corrective Action
F1/None RTD Heaters turn off
The RTD for the
component indicated
has failed or the
component was
disconnected from
the melter.
Replace RTD
Check hose/gun
connections
F2/None
Under
temperature
Heaters turn off
The actual temperature
of the component
indicated has dropped
below the under
temperature delta,
which was set using
parameter22.
Check for conditions
that may cause a drop
in ambient temperature
Replace RTD
F3/None Over temperature Heaters turn off
The actual temperature
of the component
indicated has increased
beyond the over
temperature delta,
which was set using
parameter21.
Replace RTD
F4/1 RAM test
Melter stops
functioning
Internal RAM failure Replace CPU
F4/2
Internal Clock
time
Heaters remain on,
but fault condition
persists
Internal clock failure Replace CPU
F4/3
RAM backup
battery Clock does not
function Insufficient voltage from
RAM backup battery
Replace CPU
F4/4
Internal clock
battery backed
RAM Heaters remain on,
but fault condition
persists
Battery‐backed RAM
failure
Replace CPU
Continued...