VACUUBRAND PC 620 NT plastic housing - Manual (Page 95)

page 95 of 113
(b)
(f)
(c)
(f)
PC 520 NT / PC 620 NT:
➨
Remove the second controller and its holding plate.
➨
Unplug in the VACUU•BUS lines at the rear
of the controller (b): Power supply line of
the controller and control line of the in-line
valve. Attention: Do not apply off-axis forc-
es when removing plug connections!
➨
Loosen the union nut at the vacuum con-
nection (c) of the controller. Remove the
PTFE hose from the vacuum connection.
➨
Remove the three Allen screws (f) affixing the holding plate with a 2.5
mm wide Allen key. Remove the controller together with its holding
plate. Pay attention to the washers under the screws.
➨
For maintenance, lay the pumping unit on its side with the pump heads
to be maintained at the top. Support the pumping unit appropriately.
➨
Remove the 4 screws affixing the head cov-
er cowling (W) with a Torx driver T20. Pay
attention to the washers under the screws
and remove.
➨
Pull off head cover cowling (W) carefully. Do
not tilt.
W