Storch PG 25 Mode D'emploi page 34

Maintenance
The units are to be checked by an expert as to their perfect
operation, when it is necessary and in accordance with the
terms of use, but at least every two years.
The result of this check is to be recorded in a test certificate,
which is to be kept safely until the next check is carried out,
and which can be presented to authorized persons at any
time.
The persons charged with the operation of the units have to
check these before starting the operation as to visual faults
at the control and safety devices, and they have to make
sure that the protective devices have been fitted.
In the case of faults the supervisor is to be informed.
If those faults endanger the operational reliability of the unit,
its operations is to be stopped!
The units are to be maintained regularly, but at least
after each heating period to ensure their trouble-free
operation and a long service life.
The units are to be kept free from dut and other dirt,
and it is to be cleaned with a drey or humid cloth
(do not use water jets for cleaning).
Do not use any aggressive cleaning agents or cleaners
containing solvents.
The suction opening for combustion air, as well as
the injector fitted behind it and the gas nozzle are to
be checked reularly to ensure that they are free from
dirt.
Clean gas burner and gas nozzle regularly.
Clean diaphragm plate regularly.
The suction and blow off grid are to be checked
regularly to ensure that they are free from dirt,
otherwise they are to be cleaned.
clamping screw
igition electrode
Removal and Cleaning of the Gas Burner
Setting Hints:
Size A = distance of ignition electrode to burner
Size B = position of thermocouple tip
Size C = position of ignition electrode tip
diaphragm plate
PG 25
gas burner
The indicate size is based on approximate value.
!
electrode holder
clamping screw
thermocouple
3 4 3 4 3 4
3 4 3 4
Remove blow-off protective grid and outside casing,
as well as the inspection cover at the lower side of
the unit.
Loosen clamping screw of the nozzle holding device.
Remove iginition cable from ignition electrode.
(Take care of cap nut and lock washer).
Screw capillary tube off the safety pilot.
Release claming screw of electrode holder and remove
ignition electrode and thermocouple.
Loosen 4 fastening screws of the burne and take
burner out of unit.
Clean burner using a steel brush and compressed air
and assemble in reverse order.
Set ignition electrode and thermocouple according to
the following instructions.
Assemble all the parts thoroughly in reverse order.
Control the functions of the complete unit and carry
out a tightness check for all gas-bearing connections
using soap solution and leakage detection spray, resp.
Intensive yellowish flames indicte that the fresh air
supply is probably insufficient and that there is some
dirt inside the unit, resp.
Sizes in mm
A B
3 20
Make sure that the gas supply opening has been
closed and the mains plug has been taken out of
the mains socket before carrying out any work
regarding the unit.
Setting and maintenance is to be carried out only by
authorized experts!
C
15