24 | SHD www.stiebel-eltron.com
INSTALLATION
Maintenance
15.3 Replacing the protective anode
If the SERVICE ANODE indicator illuminates, check the signal
anode and replace if necessary. Spanner size for the anode
- SHD 30 S: SW 13
- SHD 100 S: SW 27
When replacing the anode, take great care to fit the pressure
switch on tightly (tighten by hand, torque value 100
+50
Ncm).
Observe the maximum permissible transition resistance 1.0Ω
between the anode and the cylinder
15.4 Descaling
Only descale the flange after disassembly.
Never treat the cylinder surface or the protective anode with
descaling agents.
15.5 Anti-corrosion protection
When carrying out service work, ensure that the anti-corrosion
protection on the insulating plate is not damaged or removed.
Reinsert the anti-corrosion protection correctly after replacement.
1
4
2
3
D0000048051
1 Anti-corrosion protection (390 Ω)
2 Pressure plate
3 Insulating plate
4 Flanged immersion heater