15
5 General Operation
5
General Operation
5.1
Changing Display Units
The Model 9132 can display temperature in Celsius or Fahrenheit. The temperature units are
shipped from the factory set to Celsius. There are two ways to change to Fahrenheit or back to
Celsius as described below.
Press the “SET” and “UP” simultaneously. The units are changed.
Or
Press the “SET” key three times from the temperature display to show
Un = C
Press the “UP” or “DOWN” key to change units.
5.2
Switching to 230 V Operation
The 9132 is switchable from 115 V ac to 230 V ac 50/60 Hz. Switching the voltage can change
the calibration. Therefore, we recommend that the instrument be calibrated after the voltage is
switched. To change from 115 V ac to 230 V ac follow the steps below.
Unplug the instrument.
With a small straight slot screwdriver remove the fuse holder located on the rear panel.
Replace the two 4 amps fuses with 2 amp 250 V fuses.
Replace the fuse holder with the “230V” in the display window.
Using the same straight slot screwdriver, move the heater switch to display “230V”. See
the back panel drawing in Figure 2 on page 11.
NOTE:
If the heater switch and the fuse holder do not both read 230 V when complete,
the unit will either not heat or only heat at a fraction of its capacity. If not done properly,
the unit could become damaged and void the calibration and warranty. Use 4 amp fuses
for 115 V and 2 amp fuses for 230 V only.
CAUTION: Do not plug the unit into 230 V if the heater switches and fuse holder read
115 V. This action will cause the fuses to blow and may damage the instrument.
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