7 General Operation
7.1 Calibrator Set-Up
Place the calibratoro n a flatsurface with at least 6 inches of free space around
the instrument. Overheadclearance is required. DO NOTplace under a cabinet
or other structure.Plugthe power cord into a grounded mains outlet. Observe
that thenominal voltage corresponds to that indicated on the back of the
calibrator.
Gentlyinsert the probe sleeve into the well. The probe sleeve should be of the
smallest hole size possible while allowing the probe to slide in and out easily.
Sleevesof various sizes are available from the manufacturer. The well must be
clear of anyf oreign objects, dirt and grit before the sleeveis inserted. The
sleeveis inserted with the two small tong holes positioned upward.
Turnon the power to the calibrator by toggling the switch at the rear of the in-
strumentto the “l” (on) position. The fan will begin circulating air through the
instrument.After a brief self test the controller should begin normal operation
showingthe well temperature. The block will heat or cool until it reaches the
programmed set-point.
7.2 Switching to 230 V Operation (9107 only)
Tochange the mains voltage on the 9107 perform the following steps.
1. Unplug the unit from the power source.
2. Insert a flat-headed screwdriver into the slot on thePEM.
3. Remove the fuse holder from thePEM.
4. Change the fuses to the appropriate current rating for the voltage (see
Section 4, Safety Guidelines).
5. Replace fuse holder with the appropriate voltage displayed through the
window of thePEM.
6. The power cord may need to be changed to mate with the appropriate
230 VAC or 115 VAC socket. Some options are listed.
•230 VAC: Europe – 10A approved cord with CEE 717 plug
US – 15A approved cord with a NEMA 6-15 straight
blade plug
•115 VAC: US – 15A approved cord with a NEMA 5-15 plug.
9105/9107 21
7General Operation