Alfa Laval Micro Instructions D'installation, D'entretien Et D'utilisation page 63

20.3 Change the heating actuator
Maintenance and repairs must be carried out by an authorized service technician.
1. Disconnect the electrical power supply.
2. Unscrew the heating actuator from the valve.
3. Disconnect the cable from heating actuator in the
connection box.
4. The cable to the heating actuator is held by straps, cut
them off. Replace the old actuator and cable with a new.
Attach the cable with new straps.
20.4 Change the heating valve
Maintenance and repairs must be carried out by an authorized service technician.
Before starting out repairs always close the primary supply and return shutoff valves and drain
the system with the draining valves.
After finishing repair; open the shutoff valves. Start with primary supply and then the return lines,
in order to avoid pollutions in the system. Open up the valves slowly to avoid pressure surges.
1. Unscrew the heating actuator from the control valve.
2. Use a spanner to remove the control valve.
Note the arrow direction on the valve.
3. Mount a new valve; and take especially care to the arrow
direction.
4. Fasten the actuator.
All manuals and user guides at all-guides.com
61
Alfa Laval Micro
Installation, service and operating instruction
Picture 51
Picture 52