Alfa Laval Micro Instructions D'installation, D'entretien Et D'utilisation page 62

Alfa Laval Micro
Installation, service and operating instruction
20 Maintenance and repairs
When carrying out repairs, please contact your local service partner.
20.1 Change the hot water actuator and exchanger
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. Release the four nuts on the heat exchanger.
2. Separate the actuator from the valve.
3. Refit a new heat exchanger, actuator and open the shutoff valves.
20.2 Change the hot water 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 tap water 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
60
Picture 49
Picture 50