156 1290 Infinity Quaternary Pump User Manual
9 Maintenance
Replacing the Pump Head
Damage to the pump head
Using a wrong torque will damage the pump head.
➔ For handling the torque wrench, setting and applying
the right torque, consult the manual of your torque
wrench.
10 Insert the heat exchanger capillary into the outlet of the
primary pump head. Using a torque key, which is included
to the 1290 Infinity Service Kit p/n 5067-4699, set 3 Nm
and close the hex screw at the top of the outlet.
11 Insert the new inlet weaver to the inlet valve (1, 2). Fix
the weaver with the plastic screw to the inlet valve (3).
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