Alfa Laval Micro - 19 Service Instructions; General Service Instructions

Alfa Laval Micro
Installation, service and operating instruction
54
19 Service instructions
Always start with the general service instruction before the specific instructions for each model.
To avoid the risk of scalding, make sure that no-one draws any water while servicing the
substation.
Grey marked service actions must be carried out by an authorized service technician.
NOTE! Make sure that the substation has been correctly installed.
General service instructions 19.1
Symptom
Reason
Action
Tap water
temperature too
low
Primary heating supply too low
Check the primary inlet temperature
The temperature can be checked by means of the
energy meter
(min 65º C) or contact the primary heating medium
provider.
Handle on control valve incorrectly
positioned
See 19.5.1 Adjust the handle on the control valve.
Filter for heating media clogged
See 19.5.2 Check if the filter for heating media is
blocked.
Hot water valve does not work
See 19.5.3 Check the function of the valve for hot
water
Tap water
temperature too
high
Handle on control valve incorrectly
positioned
See 19.5.1 Adjust the handle on the control valve.
Hot water valve and/or actuator
does not work
Check the valve according to 19.5.3 Check the
function of the valve for hot water
If the water temperature is too high when the
handle is in position 0, the actuator or the
exchanger is damaged and requires replacing.
Hot water
temperature
unstable or too low
Alternating pressure on primary
side
Check available differential pressure and
temperature at the primary heating medium
provider
Filter for heating media clogged
See 19.5.2 Check if the filter for heating media is
blocked.