Nature And Frequency Of The Scheduled Checks; Ii.11 Instructions For Maintenance; Ii.11.1 Routine Maintenance - RHOSS ELECTA-ECO THAITI 106 Instrucciones De Uso

II.10 NATURE AND FREQUENCY OF THE
SCHEDULED CHECKS
DANGER!
Maintenance operations, even if for inspection
purposes only, must be carried out by skilled
technicians, qualified to work on air conditioning
and refrigeration products.
DANGER!
Always use the mains switch to isolate the unit
from the mains before carrying out any
maintenance work on the unit, even if it is for
inspection purposes only. Make sure that no one
supplies power to the machine accidentally; lock
the master switch in zero position.
In order to guarantee that the unit runs regularly and efficiently, it is
necessary to schedule an overall inspection at regular intervals to
prevent malfunctions which could damage the main machine
components.
EVERY 6 MONTHS:
 Check the amount of gas.
 Check that there are no gas leaks.
 Check the power consumption of the unit.
 Check the functioning of the differential water pressure switch.
 Bleed any air from the water system.
 Check the contactors on the electrical panel.
END OF SEASON with unit switched off
 Check that the air side heat exchanger is clean.
 Draining the water system.
 Inspect and, if necessary, tighten the electrical contacts and
terminals.

II.11 INSTRUCTIONS FOR MAINTENANCE

DANGER!
Maintenance operations, even if for inspection
purposes only, must be carried out by skilled
technicians, qualified to work on air conditioning
and refrigeration products. Use suitable personal
protective equipment (gloves, goggles, etc).
DANGER!
Do not insert pointed objects through the air
delivery and outlet grilles.
DANGER!
Always use the mains switch to isolate the unit
from the mains before carrying out any
maintenance work on the unit, even if it is for
inspection purposes only. Make sure that no one
supplies power to the machine accidentally; lock
the master switch in zero position.
DANGER!
In the event cooling or fan circuit component failure
or if the amount of refrigerant fluid drops, the upper
part of the compressor casing and the discharge
line may reach temperatures close to 150°C for brief
periods of time.

II.11.1 ROUTINE MAINTENANCE

All protective devices in the unit have been set before delivery so as to
prevent damaging the unit, therefore, do not adjust or remove them.
Promptly remove the accumulated dirt on the condenser blades so as to
guarantee the unit's performance and prevent it from stopping for safety
purposes. Never clean the manual controller with benzene, thinner or
chemical fabric to prevent the surface from fading and the components
malfunctioning. Clean the unit with the cloth soaked in a neutral
solution. Gently wipe the display screen and connecting parts to prevent
them from fading. To prevent the unit from stopping or being damaged
by the water system blocking, clean the water filter regularly and check
the water supply device often. Never interrupt the power supply if the
ambient temperature is below zero so as to guarantee antifreeze
protection. When the water tank has been installed but is set to
"Without", the tank related functions will not work and the displayed tank
water temperature will always be "-30". In this case, the water tank
would be subjected to freezing and other serious phenomena related to
low temperatures.
Therefore, once the water tank has been installed, it must be set to
"With", otherwise Rhoss will not be liable for this anomalous operation.
Do not switch the unit on/off often and close the manual valve of the
water system while the unit is used.
Make sure the working conditions of each component are checked often
so as to check for oil leaks on the pipe joint or refrigerant leaks on the
loading valve.
Repairs and maintenance on the electrical components must include
preliminary safety checks and component inspection procedures. If
there is an error that could compromise safety, then no electrical supply
must be connected to the circuit until it is satisfactorily implemented. If
the error cannot be corrected immediately, but operations must
continue, an adequate temporary solution must be adopted. This must
be reported to the owner of the equipment so that all bodies are
informed.
If the unit malfunction is out of control for users, please promptly contact
the authorised service centre.
II.11.1.1 Cooling circuit
Checking the amount of refrigerant fluid
With the unit off, fit a pressure gauge on the test point on the outlet side
and another on the test point on the inlet side. Start up the unit and
check both pressure readings once they have stabilised.
 Checking for refrigerant fluid leaks
With the unit off, check the cooling circuit with a suitable leak detector.
 Checking that the air side heat exchanger is clean:
With the unit off, observe the air side heat exchanger and, as needed:
 remove any foreign bodies from the finned surface which may
obstruct air flow;
 remove built-up dust possibly vacuuming it;
 lightly wash and brush with water;
 let it air dry;
 keep condensation drain pipes free from any obstructions.
II.11.1.2 Hydraulic circuit
 Draining the water system
The system can be drained from the relief valve on the water inlet pipe.
Make sure the hydraulic circuit is completely emptied by opening all the
manual relief valves inside the unit.
PROTECT THE ENVIRONMENT!
If the system has an antifreeze additive, it must not
be drained freely, because it causes pollution. It
should be collected for possible recycling. The
filling valve must not be opened in the presence of
glycol water.
II.11.1.3 Electrical circuit
The following checks are recommended on the electrical circuit:
 check the unit power consumption using a clip-on meter and
compare the reading with the values shown in the technical data
table;
 with the unit switched off and disconnected from the power supply,
check and inspect electrical contacts and terminals for tightness.
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ELECTA-ECO