Robur GAHP-AR, Installation, Use And Maintenance Manual

Maintenance

36

7

Switch on the appliance using the on/off command (placing it in 

the "ON" position).

After switching on with the control, in normal operating condi-

tions, the appliance starts/stops automatically according to the 

user's heating/cooling needs, supplying hot or chilled water at 

the programmed temperature.

Although the external request is in the "ON" position, this 

does not mean the appliance will start immediately, but 

it will only start when there are actual service demands.

During operation of the appliance, the summer/winter 

switch (from summer to winter operation and vice-versa, 

also called "cycle inversion") may require a maximum of 

11 minutes from the time this inversion is invoked by the 

user.

Switch off

Switch off the appliance using the on/off command (placing it in 

the "OFF" position).

The shutdown cycle takes approximately 10 minutes to 

complete.

6.3 

 MODIFYING  SETTINGS

Modify settings via the DDC

If the device is connected to the DDC control, refer to the 

relevant manual to modify settings.

Do not modify complex settings

Specific technical and system knowledge is required for 

complex settings. Contact an AT.

6.4 

 EFFICIENCY

For increased appliance efficiency:

▶

Keep the finned coil clean.

▶

Set water temperature to the actual system requirement.

▶

Reduce repeated switch-ons to the minimum (low loads).

▶

Program appliance activation for actual periods of use.

▶

Keep water and air filters on plumbing and ventilation sys-

tems clean.

7  

 MAINTENANCE

7.1 

 WARNINGS

Correct maintenance prevents problems, assures effi-

ciency and keeps running costs low.

Maintenance operations described herein may exclu-

sively be performed by the AT or skilled maintenance 

technician, excluding finned coild cleaning, which can 

also be done by the user.

Any operation on internal components may exclusively 

be performed by the AT.

Before performing any operation, switch off the appli-

ance by means of the control device (DDC or external 

request) and wait for the end of the shutdown cycle, 

then disconnect power and gas supply, by acting on the 

electrical disconnector and gas valve.

Lubrication of condenser fan, hydraulic pump, and pre-

mixer motor is not recommended.

The efficiency checks and every other "check and main-

tenance operation" must be performed 

once a year

.

Responsibility for efficiency checks, to be carried out for 

the aims of restricting energy consumption, lies with the 

system manager.

Environmental or operational heavy conditions

In environmental or operational conditions particularly 

heavy (for example: heavy-duty use of the appliance, 

salty environment, etc.), maintenance and cleaning op-

erations must be more frequent.

7.2 

 SCHEDULED ROUTINE MAINTENANCE

The maintenance operations to be carried out on the appliance, 

at least once a year, which can also be done by the user, are:

▶

Clean the finned coil.

The maintenance operations to be carried out on the appliance, 

at least once a year, that may exclusively be performed by the AT 

or skilled maintenance technician, are:

▶

Check the condenser fan height

▶

Checking that the combustion circuit is fully functional:

„

inspect and clean flue gas passage

„

clean the burner

„

check the ignition and flame sensor electrodes

▶

Check that the oil pump is operating correctly:

„

check the oil level

„

replace the belts after 6 years or 12000 hours of opera-

tion

▶

Check the cleanliness of the water filters and efficiency of 

the internal flow switch

7.2.1 

   Clean the finned coil

Finned coil cleaning can also be done by the user.

Avoid excessively aggressive cleaning of the finned coil 

(e.g. high-pressure washer).

Do not use solvents for cleaning the finned coil. This 

could cause damage to the aluminium fins.