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24
Operation
EN
180-2 DN 25 RTA / 180-3 DN 25 RTA
7
Operation
Proper operation is only possible if the thermometer ball valves and the ball
valves are open (0° setting, see chapter "Thermometer ball valve").
8
Maintenance
8.1
Maintenance intervals
8.2
Maintenance activities
8.2.1
Replacing a defective circulation pump
1. Close the blue thermometer ball valve and the ball valve in the pump
line (90° setting).
2. Replace the circulation pump (see instructions of the manufacturer of
the pump).
3. Open the thermometer ball valve and the ball valve (0° setting).
When
Activity
Monthly
Perform a visual inspection of the heating system
and verify tightness.
If required
Replace the circulation pump.
DANGER
ELECTRIC SHOCK CAUSED BY LIVE PARTS
•
Disconnect the mains voltage supply before performing the work and ensure
that it cannot be switched on.
Failure to follow these instructions will result in death or serious injury.