15
Torque
Boiler door
A
25 Nm
Screws for cleaning cover
B
7 Nm
Checking the water chamber for deposits
A
Fig. 7
1.
Open hand hole cover
A
.
2.
Fully drain the boiler.
3.
Clean the water chamber (hose it out) and remove
deposits via the blow-down valve and drain outlet.
If hard deposits have formed which cannot be
removed by hosing down, carry out a chemical
cleaning process with added descaling agent.
4.
Clean the sealing faces of closures and fit new
gaskets. Tighten new gaskets after commissioning
and check again after 24 hours.
Torque settings for closure gaskets
System size
Gasket
Torque
SXD size 1 (170 kW)
HL gasket 100 x 150
1 x M16
80 Nm
SXD size 2 - 6 (285 - 1450 kW)
HL gasket 150 x 200
1 x M20
100 Nm
Cleaning the multiple level electrode
B
C
A
Fig. 8
1.
Remove electrode
A
.
2.
Clean electrode tips
C
.
3.
Clean the sealing faces and use a new gasket
B
(see standard EN 1591).
4.
Install the electrodes and carry out a safety test in
line with the manufacturer's instructions.
5.
Retighten new gaskets after commissioning.
Commissioning, inspection, maintenance
Securing the boiler door and cleaning cover
(cont.)
5692729
