48
PROBLEM
SOLUTION
PROBABLE REASON
• The machine does not start.
• There is no supply from the mains.
• The main switch is pointing to “OFF”.
• The START STOP switch is point-
ing to “STOP”.
• A mistake in the “RUN” program-
ming.
• Alarm signal on the display.
• Some other reason not mentioned
above.
• Check and proceed accordingly.
• Turn on the main switch.
• Turn on the START STOP switch.
• ConsultOP7 operator panel and/or the WINKRATOS
®
sw handbooks and proceed accordingly.
• Check the description of the type of alarm on the LCD
display and eliminate the cause.
• Call your technical assistance service.
12 TROUBLESHOOTING
The maintenance operations that ANGELANTONI INDUSTRIE SpA authorizes are
those indicated in the chapter entitled “Regular maintenance”. The information given
in the column “SOLUTION” in the tables below does not authorize any operations if
these compromise safety; the information is given to help any specialized
technicians find the fault.
• The equipment does not
reach the set temperature.
• Error in setting of setpoint.
• There is too much material in the
test chamber.
• The test material prevents correct
air circulation.
• The test material dissipates too
much heat.
• The door is not shut correctly.
• The cooling system is not work-
ing correctly.
Continual request for “cold”, the
compressor stops every now and
again.
• Continual request for “cold”, the
compressor works continuously.
• Check and modify.
• Reduce the quantity.
• Place the material so that air can circulate through the
intake and outlet openings.
• Check and reduce the load that dissipates the heat
according to the technical specifications of the cham-
ber.
• Close the door correctly.
• Check that the condenser fan is working correctly,
make sure that the condenser is clean and check that
the ambient temperature of the premises does not
exceed the value given in the specifications. If the
equipment has a water condenser, check that the
system has a sufficient water supply; if the system has
a sufficient supply and the difference in temperature
between the inlet pipe and the outlet pipe is very low or
is inexistent, this indicates that the condenser is blocked
and has to be cleaned or replaced (the temperature
difference can be measured by simply touching the
pipes with your hand). If the above solution does not
resolve the problem, contact your technical assistance
service.
• There may be an accidental loss of coolant, contact
your technical assistance service.