Bio-Rad BioLogic Signal Import Module (SIM) - Manual (Page 201)

MAINTENANCE MAINTENANCE AND TROUBLESHOOTING
11-8
1. At the DuoFlow Controller go to the Manual screen and turn off the lamp. Turn off power to the
Workstation and unplug the UV Lamp cable, which is plugged into the UV Lamp connector on the
rear of the Workstation.
2. Without disconnecting the lamp housing from the UV bench, undo the two small Allen screws
securing the lamp fixture and gently pull the lamp out of the housing.
3. Remove the lamp unit from its packing material.
WARNING: Do not touch the glass part of the lamp. Oils from you fingers will degrade the lamp over
a period of time.
4. Carefully insert the replacement lamp fixture. The replacement lamp can be installed only in one
orientation due to a small guide which fits into the housing. Secure it using the Allen screws for that
purpose. Note that extra screws are provided with the kit.
Note: Check that the O-ring seal at the lamp housing aperture is present and undamaged. If there is
any indication of damage, or if it is missing, be sure to replace it using the O-ring supplied with the
kit.
5. Reconnect the UV Lamp cable to the Workstation.
6. Turn on electrical power to the Workstation and at the DuoFlow Controller go to the Manual screen
and turn on the lamp. Allow at least 30 minutes for the mercury lamp to warm up and at least
several hours for the zinc lamp.
11.5 MIXERS
The Maximizer mixer and the MX-1 mixer may be disassembled for cleaning or to change the mixer capacity
to accommodate the flow rate. Cleaning may be required if there is erratic gradient performance.
Both mixers consist of the mixer base and barrel, magnetic stir bar, screws, mixer top, and sealing O-rings.
Note : If the system has been used, make sure that any hazardous material has been flushed from the
system, the pumps are not running, and any residual pressure has been bled from the system. Drain
fluid from the mixer, disconnect any plumbing connections, disconnect the cable from the workstation,
and then remove the mixer from the system rack.
1. Use the hex key provided (or any standard 5/32” hex key) to remove the four assembly screws from
the top of the mixer.
2. Remove the mixer top and turn it upside down to remove the O-ring. If the O-ring does not easily
dislodge, then use your fingers to remove it. Note the position of the O-rings (refer to Figure 11-6).
3. Wipe the inside of the mixer body with a paper towel. To clean the mixer barrel or mixer barrel
extension, the O-rings, and the magnetic stir bar, soak or sonicate in a bath containing a mild
detergent. Replace damaged O-rings.
Note: The stir bar is magnetized. To remove it, turn the mixer base upside down and tap it on your
hand.
4. Reassemble the mixer. To re-insert the magnetic stir bar, place it on a tabletop and carefully place
the mixer base over it.
5. Insert a 1/4-28 plug into one inlet and a 10 ml syringe into the other inlet port and flush the system
with DI water or mild detergent solution. Reverse the location of the plug and syringe and repeat.