Alfa Laval AquaMicro, Installation And Service Instruction

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Alfa Laval Micro
Installation and service instruction
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14
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.
NOTE! Make sure that the substation had been correctly installed.
This chapter has service instructions for:

Tap water temperature too low

Tap water temperature too high

Hot water temperature unstable or too low

Heating system temperature too high or too low

No heating

Noise in the radiator system

Heating temperature unstable
General service instructions 14.1
A. Tap water temperature too low
Reason Action
A1)
Primary heating supply too low Check the primary inlet temperatur e
The temperature can be checked by means of the energy meter
(min 65º C) or contact the primary heating medium provider.
A2)
Handle on control valve
incorrectly positioned Adjust the handle on the control valve
The hot water temperature can be controlled by turning the handle, on the
control valve for domestic hot water, anti-clockwise for increased tap
water temperature. To decreasing tap water temperature turn the handle
clockwise until the desired tap water temperature is reached (50ºC
approx.). The stabilisation time for the hot water temperature is about 20
seconds.
NOTE! Alfa Laval recommends that the tap water temperature is set to
10º less than the primary inlet temperature. If a HTC the temperature
must be 15º less than the primary inlet temperature.
A3)
Filter for heating media clogged
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.
Picture 43