UK
6.3. Cleaning and maintenance
DANGER:
DANGER:
ATTENTION:
ATTENTION:
6.3.1 Interventions and relevant frequency
The most significant and important operations are related to ordinary maintenance and can be summarised as follows:
On a weekly basis check the evaporator is clean, in particular that there is no ice accumulation. When the evaporator is
obstructed by ice, conduct manual defrosting and keep the "UP" key pressed for more than 5 seconds. Repeat the procedure
until the evaporator is completely clean. Check after 12 hours.
Periodically clean (at least each month) the condenser by removing dust and grease. If the room where the unit is installed is
very dusty, you can clean it more frequently.
Every four months clean the fastened and mobile contacts, for all the counters and replace them if they show signs of
deterioration.
Check (every four months) the tightening of all the electrical terminals both inside the panels and on the terminal blocks of
each electrical utility; carefully also check tightening of the fuse elements.
Visually check the entire refrigerator circuit, also inside the machines, to search for refrigerant leaks, which can also be
found looking for traces of lubricating oil. If in doubt, prompt, in-depth intervention is required. Check for refrigerating gas
leaks:
for systems with 3 kg ≤ refrigerant load < 30 kg the control must be annual;
for systems with 30 kg = refrigerant load < 300 kg the control must be six-monthly;
for systems with a refrigerant load ≥ 300 kg the control must be quarterly.
If a leak is detected, immediate intervention is required and an audit must be conducted within 30 days to ensure the repair
was efficient.
Every four months check the regular flow of the refrigerant in the light on the liquid line.
Every four months check the level of oil using the specific light (where present) on the compressor carter.
Every four months use the passage light glass on the liquid line to examine the colour of the element sensitive to humidity.
Green indicates dry, yellow indicates humidity. If humidity is indicated, stop the machine immediately and replace the filter
on the liquid, replace the refrigerant and oil load. Repeat the control after 3 days of functioning.
Every four months check the noise of the compressor. This operation should be conducted with care because it requires the
system to be functioning; check the presence of ticking or vibrations which are synonymous with breakages or excessive
mechanical ranges between the moving parts.
Regularly check the drainage of condensate water is not clogged. For the MBP and LBP models, check the water drainage
tolerance is efficient.
ATTENTION:
6.3.2 Interventions on safety valve (where planned)
We recommend you replace the safety valve in case it needed to intervene; during drainage, in fact, the accumulation on the seal
of the valve of processing residue from components and tubing can cause the seal to become faulty.
DANGER:
DANGER:
the manufacturer declines all responsibility for any damage to property and/or persons deriving from
incorrect or incomplete maintenance.
before conducting any planned ordinary maintenance interventions, ensure the machine is sectioned
from the power supply; also wait for any hot surfaces to cool.
in case of replacement of machine components, they must be replaced with identical and original
components.
Any measures taken to braze on a product category risk PED ≥ 1, must be conducted by qualified
professionals.
on completion of each maintenance and cleaning operation, reset all the fastened protections.
before replacing the valve, check the system, in the zone in which it is operating, is not under pressure
or at a high temperature.
do not dismantle the safety valve without recovering the gas in advance that is present in the liquid
receiver.
P-SF-SV Pag. 58 Rev 00 02/11