Inspection And Maintenance; Notes For Maintenance; Safety Instructions; Overview Of The Maintenance Tasks - Vaillant atmoCRAFT VK 654/9 Installations- Und Wartungsanleitung

8

Inspection and maintenance

8.1

Notes for maintenance

Permanent operational readiness, safety, reliability and a
long service life require inspections and maintenance
work to be carried out regularly every year by a heating
engineer.
Danger!
Inspection, maintenance and repair work should
only be undertaken by an approved heating
installation company.
Inspections / Maintenance work not carried out
can result in damage to property and personal
injury.
Only genuine Vaillant spare parts may be used for
inspections, maintenance and repair work to ensure the
perfect long-term working order of all functions of your
Vaillant appliance and to prevent the allowed series
condition from being changed.
Any spare parts which might be required are listed in
the relevant current spare parts catalogues.
Information can be obtained from Vaillant Customer
Service Centres.
8.2

Safety instructions

Always perform the following steps prior to inspection
work:
• Switch off the mains switch.
• Close the gas shut-off valve.
• Close the heating feed and return.
Danger!
Risk of fatal electric shock from touching live
connections!
The supply terminals in the terminal box of the
device are under voltage even if the mains
switch is off.
Protect the switch box from water splashes.
Before working on the appliance, turn off the
power supply and secure against restart!
Always perform the following steps after completing any
inspection tasks:
• Close the heating feed and return.
• If necessary, refill the device with hot water up to a
pressure of approx 1.5 bar and evacuate the heating
system.
• Open the gas shut-off cock.
• Turn on the power supply and the main switch.
• Check the appliance for gas and water leaks.
• If necessary, refill and re-bleed the heating system.
Installation and maintenance manual atmoCRAFT
Inspection and maintenance 8
Note!
If it is necessary to keep the main switch on for
certain inspection and maintenance, this is
indicated in the description of the maintenance
task.
8.3

Overview of the maintenance tasks

The following steps must be taken during maintenance
of the unit:
No. Step
Isolate unit from electrical mains and
1
close gas-cock
Close maintenance cocks; Release
2 pressure on heating and hot water
circuits, or drain if necessary
Check the safety temperature limiter
3
STL
4 Automatic gas firing system
5 Check gas pressure monitor (option)
6 Check the unit for leaks
Visual check of exhaust gas system,
7 heat exchanger, burners, exhaust gas
diverter of flow safety device
8 Checking the gas setting
9 Perform exhaust gas measurements
Check the function of the exhaust gas
10
diverter
11 Cleaning the burner
12 Change the seals
13 Cleaning the heat exchanger
Checking the control and safety
14
devices
15 Checking the gas setting
16 Perform exhaust gas measurements
Checking the control devices, re-setting
17
if required
Recording the maintenance tasks and
18
exhaust gas measurements made
Table 8.1 Maintenance steps
to be performed:
1 x as
annually required
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
GB 33