MULTILUBE
INSTALLATION AND MAINTENANCE
HINS4AEN.doc
24.08.2006 Rev. 4A
14 (18)
5 REPLACING THE LINE VALVE
Warning
Ensure that the pumping unit is turned off when replacing the line valve.
1. If there are a lot of impurities in the environment, do not replace the line valve while the
pumping unit is in its place. Remove the pumping unit (see paragraphs 1 and 2 ) and
replace the line valve in a clean environment.
2. Remove the cover and the shell (see paragraphs 2 and 3 ).
3. Open the fastening nut of the terminal block package and power supply unit (Figure 40).
4. Remove the nut and disconnect the protective grounding wire (Figure 41).
5. Remove the screw and disconnect the other protective grounding wire (Figure 42).
6. Move the terminal block package and power supply unit so that you are able to open the
nut of the line valve coil with fingers and to remove the nut and the coil (Figure 43 and 44).
7. Disconnect the thermostat wire (Figure 45).
8. Remove the terminal block package and the power supply unit (Figure 46).
9. Remove the line valve body with 27 mm socket or socket wrench (Safematic code
11790058) (Figure 47 and 48).
10. Install a new line valve.
11. Reassemble the pumping unit in reverse order.
Warning
Ensure that the wires are not pressed or cut during the reassembly phase.
Figure 40.
Open the nut
Figure 41.
Disconnect the protective
grounding wire
Figure 42.
Remove the screw
and disconnect the
other protective
grounding wire
Figure 43.
Move the power supply unit
and terminal block package
