Labconco 6520000, Руководство пользователя

Страница: 23 / 32

Chapter 5: Servicing the RapidStill II
Product Service 1-800-522-7658 20
(5) Remove the knurled nut and its sealing ring from the old extension
tube, and install it on the new tube, noting the correct orientation of the
nut and washer.
(6) Install the new extension tube, orienting the drip point of the tube to the
bottom. Reverse steps 1-4 to complete the installation.
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
Chapter 4: Routine Maintenance .
(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 7.
(5) Remove the pump cover, exposing the pump tube.
(6) Pull the pump tube straight out of the pump housing.