Maintenance
8
17
We reserve the right to make any changes due to technical modifications!
Installation and Maintenance Manual Logalux LT135/2 – 300/2 • Issue 05/2003
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
8.3.1 Visual Inspection of Anode Rod
Check magnesium anode (Fig. 18,
Item. 1
) for
decay. Replace anode rod, if the diameter is reduced
to ½" to ¾".
8.3.2 Check the Magnesium anode with multi-
meter
Follow the outlined procedure:
Remove one side of the grounding lead (Fig. 17,
Item. 3
) on the tank.
Set multi-meter (MM) to DcmA (milli amps)
Connect black wire (Fig. 17,
Item. 6
) of MM to
grounding cable or bolt (Fig. 17,
Item. 7
).
Connect red cable (Fig. 17,
Item. 5
) of MM to the
anode.
Ensure clean metallic surfaces for terminal
connections.
The tank must be filled with water during the test.
A reading between .3 mA and 10 mA on the MM is
good.
Record readings each year in the Table. 3.
Record the test date and sign off in the table below:
Properly reconnect the grounding cable after each
test.
NOTICE
Do not contaminate the surface of the rod
with oil or grease. Keep the rod clean.
Fig. 17
Testing the anode with an multi-meter
Item. 1:
Magnesium anode
Item. 2:
M8-bolt
Item. 3:
Ground cable
Item. 4:
Clean-out cover
Item. 5:
Red cable from multi-meter
Item. 6:
Black cable from multi-meter
Item. 7:
Hex head bolt from tank
Item. 8:
Digital multi-meter
2
1
3
4
6
7
5
8
Date
mA Reading Service Company/Signature
Table. 3 Service records
