Alfa Laval Micro Instructions D'installation, D'entretien Et D'utilisation page 60

Alfa Laval Micro
Installation, service and operating instruction
19.5.2 Check if the filter for heating media is blocked
Service actions 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.
Check if the filter for heating media is blocked
Release the filter holder and remove the cartridge.
Clean the filter with water and refit the cartridge. Screw the filter holder
with a momentum of 10-20 Nm.
19.5.3 Check the function of the valve for hot water
Service actions must be carried out by an authorized service technician.
Check the function of the valve for hot water.
Release the actuator from the valve.
Carefully press the valve's spindle with a tool and check the valve's travel and
spring back.
Note: The valve may be very hot
Check that hot water gets throw the valve. Carefully feel the pipe after the valve.
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