Metos 4241001, Operating Instructions Manual, Page: 35 / 90

35
21 • ROUTINE MAINTENANCE
900-----rev00
21.1 • PERIODICALLY...
. . . t h e d e f l e c t o r a n d t h e s h e l f g r i l l e s
s h o u l d b e c l e a n e d a s a n d w h e n
necessary.
Proceed as follows:
• shut off all utilities (electrical power supply,
water, and gas if connected);
• take out the pan racks;
• using a screwdriver of the right size, or a
coin, unscrew the deflector screws to be
able to clean the back; it is recommended
to use the hand-held shower for thorough
rinsing
• dry with a clean cloth;
• it is necessary to remove the deflector if
the dirt is particularly tough to remove; do
not use abrasives or scourers that would
damage the steel surface; size permitting,
wash the deflector in a dishwasher.
Secure the deflector in the oven, making
sure the two fixing screws on the right-hand
side are well tightened.
21.2 • PROLONGED IDLE PERIODS
If the oven is to stand idle for any length of
time (e.g. holidays or seasonal closing)
it must be cleaned thoroughly, leaving
no traces of food or dirt. Leave the door
slightly ajar so that air can circulate inside
the oven. Be absolutely certain to shut off
all utilities (electrical power supply, water,
and gas if connected). For added care
after cleaning, the external surfaces can be
protected by applying a proprietary metal
polish.
22 • DESCALING THE BOILER (if present)
The appliance is able to count the hours of
operation of the steam generator and then
to warn the operator with the message
“ D E S C A L E R ” w h e n i t i s n e c e s s a r y
to descale the steam generator with the
special program “BOILER CLEAN”.
T h e m e s s a g e “ D E S C A L E R ” d o e s n o t
stop the appliance for obvious reasons
of service, it is anyhow recommended to
a c t i v a t e t h e “ B O I L E R C L E A N ” p r o g r a m
in the hours nearest the appearance of
the message. The presence of limescale
c a u s e s l o s s o f p o w e r i n t h e s t e a m
circuit and serious damage to the steam
generator.
Note that the steam generator runs a drain
and wash cycle automatically every day so
as to regenerate the water in it.
The descaling interval is defined by several
parameters entered on the electronic card
by the technician at the time of installation,
o n t h e b a s i s o f t h e c h a r a c t e r i s t i c s
of the supply water (upstream from the
softener) and on the basis of its technical
characteristics.
The message “DESCALER” appears when
the appliance is switched off. The end
o f t h e “ B O I L E R C L E A N ” c y c l e p e r m i t s
resetting the total number of hours and the
removal of the message.
Descaling should be performed with the
a p p l i a n c e c o l d a n d c l e a n ( s e e “ D a i l y
Cleaning”), preferably with the assistance
of the authorized technician.