Replacing The Components; Replacing The Servomotor; Replacing The Thermostatic Head; Replacing The Servomotor (Models With Climatic Regulation) - emmeti TM3 Mixing Unit Manuel D'installation Et D'utilisation

4. REPlaCINg THE COMPONENTS

4.1 Replacing the circulator
1
Proceed as follows to replace the circulator:
1. close the  upstream and downstream on/off valves (if any) of the
mixing unit - if there are any distribution collectors, close all the lock-
shields (or flow-rate meters)  of the delivery collector;
2. empty the return collector via the relief valve  - In the case of the
unit with the thermostatic regulation, the water cannot be removed
from the circulator due to the presence of the check valve in the lower
section of the unit, while in the climatic regulation unit the check valve
is instead on the delivery line and the water comes out via the return
collector;
3. power off the equipment;
4. loosen the pipe joints;
5. disconnect the power cable;
6. take out the circulator and replace it with the new one;
7. re-connect the circulator's power cable by following the directions
reported on the leaflet enclosed with the circulator itself;
8. tighten the pipe joints;
9. power on the equipment again and open the ball valves and lock-
shields/meters of the distribution collectors if installed.
Note
If you are replacing the circulator, it is best to only replace the motor unit
plus the impeller and leave the hydraulic body in place.
14

4.2 Replacing the thermostatic head

Proceed as follows to replace the thermostatic head:
– take out the probe from the well;
– unscrew the thermostatic head and replace it;
2
– insert the probe in the well.
To make it easier to assemble, set the maximum value on the thermostatic
head. Bear in mind you need to set it back to the temperature envisioned
in the project for the floor-mounted system.
3

4.3 Replacing the servomotor

(models with climatic regulation)
Proceed as follows to replace the servomotor:
– plug out the power cable from the servomotor;
– unscrew the M30x1.5 fixing ring nut of the mixing vale and replace the
servomotor;
– plug the power cable back in.
To make it easier to mount, use a 3mm hex key to turn the indicator on the
servomotor's head from 0 to 1.
GB GB