User`s guide

Temperature Control 13
Agilent 5500 SPM User’s Guide 206
Note that Cable 3 includes a tab on the black-wire side of the connector
(Figure 140). The tab must face the Lo jack on the controller.
Figure 140 Tab side of Cable 3 must be inserted into the Lo jack
Water Cooling
When a sample is cooled using the Peltier sample plate the opposite side
of the Peltier device becomes hot. The hot side is water cooled to
decrease the minimum sample temperature, reduce power requirements
and prevent overheating. Inlets are provided on the underside of the
Peltier sample plate to connect water cooling tubing.
A gravity-fed water-cooling system (Figure 141) is preferred over
mechanical pumping because it reduces the potential for vibration that
can affect imaging. Two reservoirs are provided with the Peltier sample
plate, one to be used as a source and the other as a receptacle to store
water for recycling. A height difference of three feet between the source
and receptacle gives a minimum temperature of -25 C or
approximately 50 C below room temperature. Ice can be added to the
reservoir to increase efficiency for a minimum temperature of -30 C.
CAUTION
Connect the water-cooling system and test for leaks before making any
electronic connections or turning on any components.