Riello NexPro Plus, Руководство по установке и обслуживанию

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MAINTENANCE
3 .24 Counter reset
All User and Manufacturer parameters and runtimes are stored
in memory. The runtime and anti-legionella count stops if pow-
er supply is missing and restarts from the status in which it was
before power supply interruption.
Press and hold [DOWN] key for 3 seconds to reset the counter
of heat pump, heating element, and total runtime.
3 .25 Return to factory parameters
To restore the factory defaults you have to run the initialization
procedure. Starting from STANDBY mode (rightmost point ON)
press [UP] and [DOWN] keys for 5 seconds.
To confirm the procedure the display will show the message
“ini”.
3 .26 Further checks after commissioning
After having started the unit, check the temperature of DHW
temperature probes displayed. If the values detected are not
correct, check the location of the probes in the probe holder
socket.
Several days after unit starting, visually check any leaks in the
water system or any clogging of the condensed water drainage.
4 MAINTENANCE
4 .1 Routine maintenance
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Maintenance interventions must be carried out by author-
ised personnel R or qualified personnel in accordance
with the provisions of this booklet. Do not modify or tamper
with the unit as dangerous situations may arise and the unit
manufacturer will not be liable for any damage caused.
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Before carrying out any maintenance work, make sure that
the unit is not and cannot be, either casually or accidentally,
electrically powered. Therefore, the electrical power must be
disconnected any time maintenance work is carried out.
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The customer must carry out all maintenance operations on
the heat pump heater.
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If the unit must be disassembled, protect your hands with
gloves.
4 .1 .1 Checks
At least once a year or in case of need it is recommended to per-
form the following checks.
− Control of the general conditions of the unit.
− General check of power consumption during the heat
pump heater operation.
− Overall control of the operation of the electrical heater.
− Checking the tightness of all electrical connections.
− Control of the settings and programming parameters.
− Checking the status of the contacts of the fan and com-
pressor.
− Monitoring of air filters in the hydraulic circuit.
− Control the sacrificial anode.
− Check the operation of safety valve.
− Control the preload of expansion tank.
− Control of the general conditions of the unit and the in-
stallation and testing of leaks.
− Checking the refrigerant charge.
− Control the filter dryer.
− Checking the condition of the refrigerant circuit.
− Control of the electrical heater.
− Check tightness of bolts, nuts, flanges and water connec-
tions that may have been loosened by the vibrations.
Furthermore, for better efficiency of the heat pump heater,, it is
recommended to perform the following operations:
− periodically clean the evaporator using a soft bristled
brush, taking care of using suitable protections against
the injury hazard caused by the flaps
− check the fan cleaning conditions
− clean the condensate drain duct.