LC-23A COLUMN HEATING
COMPARTMENT
1.
Place the LC-23A heating Compartment in the desired location. Six holes with captive
6-32 threads are provided for secure mounting on your liquid chromatograph, if
desired. The holes are positioned to fit early model (pre 1986) BAS liquid
chromatography support stands.
2.
Connect the LC-23A heater power cable to the power socket on the back panel of the
LC-22C Controller.
3.
Connect the red, black and yellow plugs on the probe cable to the jacks marked “PROBE
1" or ”PROBE 2" on the LC-22C back panel.
4.
Remove the cover on the LC-23A Column Heater by unscrewing the two cap screws.
Place the column in the recessed cavity and route the inlet and outlet tubing out of the
top and bottom slots. A special preheater block (EW-8146) is also supplied. Under
certain circumstances, dramatic band broadening may result if the preheater is not
utilized. Typically this becomes obvious when the temperature differential between
ambient and the desired set point exceeds 20-25°C.
If you plan to use several different styles of column endfittings, it is best to use
removable plastic fittings. BAS recommends a 2-piece PEEK finger-tight seal as
provided in BAS part no. MR-4409 (this includes a nut and ferrule). One piece plastic
fittings tend to loosen at higher temperatures.
Figure 3.
Position of Mounting Points on LC-23A Heater.
Figure 4.
LC-23A Column Heater with LC-23PH Preheater Installation.
2.01
5.00
6.00
3.37
0.50
0.75
0.50
8.89cm
4.92cm
4.12cm
10.79cm
9.36cm
39.37cm
2.03cm
2.54cm
1.93cm
PREHEATER
1.91 x 2.54cm
INLET DEPTH
1.89cm
CHANNEL WIDTH
0.685cm
COLUMN
HEATER
BLOCK
SENSOR
LOCATION
ADAPTER FOR
25-30cm COLUMNS
OUTLET DEPTH
1.85cm
Section 3. INSTALLATION
LC-23A COLUMN HEATING COMPARTMENT
4
