DuraBlue II Customer Product Manual - 第114页
Troubleshooting 6-2 Part 1126931_01 2018 Nordson Corporation Troubleshooting Quick‐Checks Before using the troubleshooting charts confirm: whether or not service was recently performed on the melter or the melter&apo…
Troubleshooting
6-1
Part 1126931_01
2018 Nordson Corporation
Section 6
Troubleshooting
WARNING! Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
WARNING! Troubleshooting activities may sometimes have to be carried out
when the melter is energized. Observe all safety instructions and regulations
concerning energized unit components (active parts). Failure to observe may
result in an electric shock.
Safety
Never disconnect cables from, or reconnect cables to, the main board
while the melter is energized.
Before breaking any hydraulic connection, always relieve system
pressure. Refer to Relieving System Pressure in Section 5, Service.
Refer to the safety information provided with optional equipment.
If the melter is removed from its sub‐base for diagnostic checks or
service, ensure that the ground lead between the chassis and the
sub‐base is re‐attached when the melter is reconnected to the sub‐base.
Troubleshooting
6-2
Part 1126931_01
2018 Nordson Corporation
Troubleshooting Quick‐Checks
Before using the troubleshooting charts confirm:
whether or not service was recently performed on the melter or the
melter's settings were recently adjusted.
external inputs (if used) are functioning properly.
the standby or clock functions are not turned on (if not required or
expected at the current time).
Returning the Melter Setup to Factory Settings
By returning the melter to its factory setting many common melter problems
can be isolated to either a problem with the melter settings or the melter
hardware.
To return the melter to its factory settings, simultaneously press and hold the
Setup key and the right‐display DOWN arrow key, and then, while holding
down these keys, cycle the control switch off and on. When the melter
restarts, release the two keys.
Troubleshooting
6-3
Part 1126931_01
2018 Nordson Corporation
Melter Faults
Table 6‐1 lists the four types of melter faults, potential causes, and expected
corrective actions.
Table 6‐1 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
F4/5
Internal clock
battery
Heaters remain on,
but fault condition
persists
Battery‐backed RAM
battery dead
Replace CPU
F4/6 Analog‐to‐digital
Melter stops
functioning
RTD analog‐to‐digital
converter failed
Replace main board or
CPU
Continued...