afriso PrimoTherm K 180-1 Notice Technique page 61

EN
9 Troubleshooting
Any malfunctions that cannot be removed by means of the measures
described in this chapter may only be repaired by the manufacturer.
Also observe the corresponding instructions of the manufacturer in the case
of malfunctions of the circulation pump or the actuator.
Problem
Noise in the system
Circulation pump does
not run
Other malfunctions
9.1 Replacing the circulation pump
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.
1. Disconnect the mains voltage.
2. Close all ball valves and drain the affected system part.
- In the case of versions with ball valve below the circulation pump, it is
sufficient to close the two ball valves upstream and downstream of the
circulation pump.
3. Replace the circulation pump. Use new seals and tighten the screw con-
nections with 80 Nm.
4. Open all ball valves and perform a tightness test.
5. Fill and vent the system.
6. Connect the circulation pump to supply voltage.
28 PrimoTherm®
Troubleshooting
Possible reason
Air in the system
Circulation pump not
properly adjusted
Pump defective
-
DANGER
Repair
Vent the system
Verify correct adjust-
ment of the circulation
pump.
Replace the circulation
pump
Contact the AFRISO
service hotline.