74
table 7�1
GUIdeLInes foR tHe PReVentIVe MAIntenACe oPeRAtIons
Check of the unit
GAHP-A
GAHP-Gs/Ws
AY
ACf
GAHP-AR
Visually check of the general condition of the unit and of its air heat exchanger.
(1)
√
√
√
√
Check the correct operation of the device used for monitoring the water flow
√
√
√
√
√
Check the % value of CO
2
√
√
√
check gas pressure to the burners
√
√
Check that the condensate discharge is clean (clear the condensate discharge hole of any blockages)
[If necessary, frequency of the maintenace operation must be increased]
√
√
√
Replace the belts after 6 years or 12,000 hours of operation
√
√
√
√
Check/restore the pressure of the primary hydronic circuit
√
Check/restore the air pressure inside of the expansion vessel of the primary hydronic circuit
√
Check every CCI or ddC(2)
ddC o CCI
Check that the plant is able to achive the setpoint temperature
√
Download the hystorical events
√
1 - It is suggested the cleaning of the air heat exchanger once every 4 years [the optimal frequency of this operation is in any case a consequence of
the installation site].
2 - Check that the plant is able to achive the setpoint temperature.
oRdInARY sCHedULed MAIntenAnCe
Perform the following operations at least once every 2 years.
If the unit is subject to particularly heavy duty (for example in process plants or in
other conditions of continuous operation), these maintenance operations must be
more frequent.
table 7�2
sCHedULed MAIntenAnCe oPeRAtIons
to Be PeRfoRMed At LeAst one eVeRY tWo YeARs
Check of the unit
GAHP-A
GAHP-Gs/Ws
AY
ACf
GAHP-AR
Clean the combustion chamber
√*
√*
√
√
√*
Clean the burner
√*
√*
√
√
√*
Clean the electrodes of ignition and flame sensing
√
√
√
√
√
Check that the condensate discharge is clean (clear the condensate discharge hole of any blockages)
√
√
√
Replace the silicone gasket
√
*Only in case the analysis of combustion products is non-compliant
Nella Sezione 5 HYDRAULIC INSTALLATION
→
27 sono riportati i suggerimenti relativi
all'impianto idraulico.
7�3
CHAnGe of GAs tYPe
This operation must be carried out exclusively by an authorised Robur Technical Assist-
ance Centre (TAC).
If the appliance is to be used with a type of gas other than that indicated on the the adhe-
sive label located on the unit's electric panel, switch off the appliance, shut off its power
and gas supplies and proceed as follows (see Figure 7.2 Gas changeover
→
76):
You will need: the appliance switched off and disconnected from the gas/electricity
supplies
Disconnect the gas pipe from the gas valve.
1.
Undo the 4 bolts E shown in Figure 7.2 Gas changeover
2.
→
76 and remove the gas
valve/blower assembly from the burner.
Protect the burner from bolts and nuts falling into it.
3.
