SIFA 1250, Руководство пользователя

Страница: 44 / 56

44
GB
I
LIKELY CAUSE
a) there is no electric current because
the automatic circuit breaker (or
fuse, if any), has been triggered
b) the main switch has not been
ac-tivated
c) the thermostat has been set too
high
d) there is a compressor overload due
to lack of condensation caused by
the condenser being blocked by
dust or other
a) the evaporator is blocked by ice
b) the condenser is blocked by dust
or other
c) lack of gas (the evaporator does
not defrost correctly)
d) the display unit is exposed to
draughts or to direct sunlight
e) the proper air flow is not reach-
ing the condenser (something,
e.g. sheets of paper, cloths, etc. is
blocking the condenser air pas-
sage grille)
f) the thermostat is not functioning
regularly (with the refrigerating
system in perfect working order,
the thermostat intervenes before
the set temperature has been
reached)
POSSIBILE SOLUTIONS
a) disactivate the automatic circuit
breaker (or replace the fuse)
b) enable the main switch
c) if the set temperature of the
thermostat is above that of the
display top, the compressor will
not start. Check the setting of the
required temperature (see Sec-
tion 3.2) with that of the current
temperature
d) use the main switch to cut off
the power supply to the display
unit; clean the condenser fins as
described in Section 4.2, then
reconnect the power to the
display unit
a) carry out defrosting as follows:
- Turn off the main switch for
10-12 hours in order to permit
the evap-orator to defrost (see
Section 4.4)
b) clean the condenser as indicated
in Section 4.2
c) call a qualified refrigeration
engin-eer to detect the cause
of the gas leak . When this has
been solved, refill the system
in accordance with the type
and quantity of gas shown on
the plate
d) the display unit will not function
in these circumstances: remove it
from any draughts and/or from
dir-ect sunlight
e) remove anything which is pre-
venting regular air flow to the
condenser
f ) call a qualified refrigeration
engin-eer to replace the ther-
mostat
PROBLEM
1) The compressor will not start
2) display top temperature is not
sufficiently low