Instruction manual
©INCOE® CORPORATION 8/2010
Pg. 38
www.incoe.com
3
M SERIES
INSTRUCTION MANUAL
TROUBLESHOOTING
PROCEDURE FOR MAINTENANCE PERSONNEL
Example of trouble : a control zone does not reach
setpoint value.
Read page 16 to locate the faulty zone.
Then switch off the M Series cabinet with the main
circuit breaker.
Unscrew top cover and backplate (from 9U versions).
Locate faulty control card for that zone. 2 indicators
of blown fuse are fitted on this card below each fuse.
Switch on the cabinet again.
If one or two indicators light are ON, change the
corresponding fuse(s).
CAUTION: replace with the same type of fuse, i.e.
quick-blow fuses type GRB 16A (10x38mm) or type
FA 5A (5x20mm) depending on card.
If no indicator lights,
Check fuses with a testing device (Ohm-meter).
Switch on the cabinet when the fuses are OK.
Check with a testing device if 230V AC (Volt/Ohm-
Meter) is actually available on the control card
output (blue or red connectors depending on card
type). Caution ! before checking, make sure the zone
setpoint is 100% in manual mode and that all other
zones are switched OFF.
If 230V AC is available, the failure is not caused by
the control card.
Switch off the cabinet again with the circuit breaker.
Check electrical continuity (Ohm-Meter) between the
connectors on the control card, HARTING connectors
on backside of the cabinet and to the mold.
- Remove the holding bar and move the control card
upwards to remove both 20 pins and 4 pins black
connectors.
- Re-mount the holding bar.
IMPORTANT NOTICE: when in function, during the
soft start phase and depending on the percentage of
power used by each control card, current value on
neutral may be higher than one of the three phase.
This overcurrent is controlled by the main circuit
breaker on backside of cabinet.
The current consumed depends on the nominal
power of the heaters and the number of control
cards utilized.
Also:
- Any work to be done inside cabinet should be
carried out by authorized personnel.
- Any component must be replaced by parts with
same specifications.
- Any work done inside the cabinet must be carried
out after complete stop procedure (except if only to
check faulty fuses thanks to LED indicators).