User manual BIOPTECHS OBJECTIVEHEATER

[. . . ] If an outer collar or sleeve is present we recommend using Bioptechs Objective Wrench and Pliers for proper removal (Bioptechs Part Number: 021523; See figure 3 ­ outer sleeve removed). Directions PLEASE READ BEFORE USING THE BIOPTECHS, INC. OBJECTIVE HEATER! Objectives are expensive and delicate. We recommend following the directions below carefully. Although great care has been taken to produce a reliable product to control the temperature of your objective, there is always some risk. [. . . ] The fuses can be accessed by prying the fuse block out of its socket with a small screwdriver wedged under the small slot in the opening of the AC line receptacle. When replacing the fuse block, make sure to align the arrow on the outside of the fuse block with the closest voltage value to your supply line voltage: · For 90-130 supply line voltage place the fuse block with the arrow pointing to 110-120V. · For 180-260 supply line voltage place the fuse block with the arrow pointing to 220-240V. Temp Out is a voltage output direct from two instrument amplifiers reading the thermistors from channel A and B. The output from this socket is temperature / 10. The left pin is channel A, center pin is channel B, and right pin is ground. Remote Setpoint is an analog input that allows the user to set the controllers setpoint from an external DC source. A DC voltage can be applied to the tip of this jack equal to temperature /10. When the jack is inserted into the controller it will automatically switch to the jacks value. When removed it will default to the setting on the front of the controller. The remote setpoint can be used for programming or cycling operating temperatures. Turn the unit on using the main on-off switch located on the rear panel. All further adjustments are made on the front panel. DO NOT plug the objective heater into the Objective Controller at this time. 2. Turn the display switch to the "OBJECTIVE" position. The temperature display will read a number between 3. 7 and -4. 2. Press and hold the black button labeled "CALIBRATE" and make sure the display reads 25. 0°C. If adjustment is necessary, turn the screw in the hole labeled "OBJECTIVE" with the enclosed screwdriver. Set the display to the "SETPOINT", then insert the enclosed screwdriver into the hole marked "SETPOINT" and adjust the controller 1. 8° less than the desired setpoint to compensate for the thermal characteristics of the objective. Mount the objective heater band onto the objective. (See figure 3 and the Heater Installation Instructions on the next page) Plug the objective heater into the controller then turn the controller ON. IMMEDIATELY set the display knob to the objective position and check that it is indicating a value between ambient and setpoint. [. . . ] Place the heater loop over the exposed cylindrical end of the objective closest to the specimen making sure the band is evenly applied to this area and that the temperature sensor is also making direct contact with the objective. Tighten the heater loop onto the objective by turning the Allen screwdriver counterclockwise until the loop is snug. Use only enough pressure to cause the heater to conform to the objective diameter and uniformly compress the temperature sensor to the objective. DO NOT OVER TIGHTEN the loop as damage will occur to the tensioning mechanism. [. . . ]