Bio-Rad CHEF-DR II System User Manual
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Definition of Symbols
Caution, risk of electric shock
Caution (refer to accompanying documents)
Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
Section 4
Maintenance
When the Cooling Module will not be used for an extended time, rinse the heat exchanger
throughly with distilled water to remove all traces of electrophoresis buffer. Drain the
residual water from the heat exchanger, and dry it with laboratory air.
Section 5
General Instructions
5.1 Installation
The Cooling Module is supplied with 2 two-foot lengths of 1/4" tubing, two 1/4" tubing
clamps, and two 3/8" to 1/4" reducers. Bio-Rad recommends that the Cooling Module be
prepared for installation as follows:
1) Attach one of the two-foot lengths of 1/4” flexible tubing to the “FLOW IN” port (Figure
1B) and attach the other length to the “FLOW OUT” port (Figure 1C) of the Cooling
Module. Be sure that the tubing is firmly seated against the rubber grommet to prevent
accidental contact with the metal heat exchanger, and avoid putting undue stress on the
ports. If the tubing ever needs to be removed, slit the tubing with a sharp knife or razor
blade, rather than pulling it off.
2) Secure one 1/4" clamp onto the end of each length of tubing attached to the Cooling
Module. The clamp must be secure to prevent air leakage into the buffer circulation
system.
3) Insert one 3/8" to 1/4" reducer into the other end of the “FLOW IN” tubing.
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