instruction for the service people
22
PROBLEMS
TROUBLE SHOOTING
Insufficient tank temperature
a)make sure that the thermostat is not
damaged.
b)make sure that the water supply temperature
is as prescribed (50/55°C)
c)check that the fuses and the coils f the
contactor relating to the heating elements are
not interrupted (only for machines with
electric heating).
d)check the elements are heating and that no
limescale deposit has formed.
e)for machines with steam heating check the
steam solenoid valves, the steam traps are
clear and the steam pressure at the machine.
Check the installation of the condense
recovery by detaching the discharge tube of
the steam condense and discharge it into an
open drain.
If the pressure at the manometer is 0,5 bar
min. and the machine starts heating, this
means that the problem is on the installation
of the steam condense recovery.
Insufficient rinsing
a)Before checking the rinse system check that
the wash section is operating correctly, as
poor wash results may affect the efficiency of
the rinse. Once the efficiency of wash area
has been checked make sure that:
- the dynamic pressure of the water supply is
not less than 2bar (200 kPa).
b)the nozzles are not blocked by limestone
c)the solenoid valves "Y10" and is operating
correctly.
d)the filter of the incoming water is not
blocked.
