Labconco RapidStill II 65200 - Manual (Page 26)

SERVICING THE RAPIDSTILL II
22
Timer Replacement
(1) Unplug the RapidStill II from electrical service.
(2)
Remove the four screws that secure the front panel on the base of the unit and pull the
panel straight out.
(3) Using an allen wrench, loosen the two set screws that secure the timer knob on its shaft.
Pull the knob straight off.
(4) Disconnect the electrical connections on the timer, noting the terminals’ orientation.
(5) Using the proper wrench, loosen the hex nut that secures the timer to the front panel
and pull the timer out of the panel.
(6) Install the new timer by reversing the above steps.
NaOH System Service
The tubing in the NaOH delivery system should not require replacement if properly rinsed after
each work session. To replace the peristaltic pump tube, proceed as follows:
(1) If possible, purge the NaOH delivery system and peristaltic pump with purified water,
as described in the Routine Maintenance section on page 17.
(2)
Unplug the RapidStill II from electrical service.
(3) Turn the unit around to gain access to the peristaltic pump.
(4) Remove the four small Phillips screws as shown in Figure 8.
(5) Remove the pump cover, exposing the pump tube.
(6) Pull the pump tube straight out of the pump housing.
(7) Thoroughly rinse the tube and remove the pump fittings and clamps. Retain the fittings
and clamps for use on the new tube.
(8) Install the new tube by reversing the above steps.