Troubleshooting
XL-2
Manual
Page 28
Mold-Masters
®
Revision 1.1
WARNING
LED is lit when temperature reading exceeds over/under
temperature limit.
LED is lit if the zone contains low resistance in the heater
circuit, or current reading exceeded maximum current limit
“Cur” in Program Menu. Message “Cur” shows in faulty zone.
To remove a card from its slot, unscrew four corner screws first.
There is no need to switch off the main supply. However, if
operational requirements allow, the cabinet may be isolated.
The shrouded terminals on the euroback board are live unless the
power supply is switched to OFF.
Specific Faults
Rapid Temperature Fluctuations
The most likely cause of temperature fluctuations is extraneous
voltages being picked up by the thermocouple cable, i.e. common
mode. This may be due to poor earthing of the tool or, a faulty
shielded thermocouple wire or, alternatively, a faulty heater. We
recommend that all earth connections be tested.
Not able to set a Higher Temperature
This problem can occur if you try to set the temperature above the
limits. Check the Max. Temp setting, tLi in Program Menu and
revise it if necessary.
Ground fault detection
The Ground fault detection detects any fault caused by earth
leakage current. Earth faults can be caused if a tool has been idle
for some time and damp has got into one heater. It may be
possible to identify the heater and repair the faulty zone by using
the adjacent heaters to heat it up and dry it out, so curing the
original problem.
Fuses
There are supply fuses for four separate functions for the whole
unit. In the unlikely event of a fuse failure
always
isolate the
incoming main supply before opening the cabinet door or
removing any panels.
Replacement Fuses
If you find that any fuse has ruptured then please make sure that
you replace the faulty fuse for a new one with identical
characteristics. All the fuse types are listed in the attached tables.
WARNING
