Heating Operating Instructions - VWR Professional Serie Manual De Instrucciones

H O I
EATING PERATING NSTRUCTIONS
T he Hotplates and Hotplate-Stirrers have a micro-processor controlled heater
that is designed to bring samples to temperature quickly and accurately.
1. Getting ready:
a. Plug power cord into a properly grounded 3-prong outlet.
b. Place a vessel with solution and the appropriate accessories in the
center of the top plate. This is important because the vessel should
be over the hottest part of the top plate.
c. Press the standby button to move the unit from standby mode. The
temperature and time displays will illuminate. On power-up, allow
the unit approximately 30 seconds to stabilize before accurate
temperature readings are displayed.
2. Setting temperature:
a. Press the up/down arrows below the temperature display until you
reach the desired temperature. Press the on/off button below the
temperature display to start the heating function. The indicator light
below the temperature display will illuminate to indicate the heating
function is in use. Audible beeps will sound to indicate the set-point
temperature has been reached. (LED display will toggle between actual
and set point temperatures. Indicator lights will toggle between actual
and set point to indicate what is displayed).
b. Set-point temperature adjustments can be made without interrupting
heating using the up/down arrows below the temperature display.
Removing or adding more to a sample content could cause the
temperature to fluctuate.
c. To stop heating function, press the on/off button below the
temperature display. Your vessel can then be removed.
3. Setting temperature with probe:
a. Probe must be connected to the unit before turning on the heating
function.
b. Follow step 2a through 2c.
7
Caution hot top indicator:
The caution hot top indicator light warns that
the top plate is too hot to touch. The caution hot
top indicator light will illuminate when the heat
is turned on and remain on until the top plate cools
down.
4. Set timed mode:
a. Press the up/down arrows below the time display until you reach
the desired time.
b. When the unit is started, by pressing the on/off button below the
temperature or speed display, the unit will run for the selected
time. There are audible beeps to indicate the time down function
is complete. The unit will shut off automatically.
c. To repeat for the same time, simply depress the on/off button again.
d. To interrupt an automatic timing cycle before it is completed, press
the on/off button below the temperature or speed display.
5. Set time to continuous mode:
a. Set timer to zero (0) using the up/down arrows below time display.
b. When the unit is started, by pressing the on/off button below the
temperature or speed display, the time display will show actual
running time.
c. To stop, press the on/off button below the temperature or speed display.
Max Temperature:
If the unit has an aluminium top, the max temperature setting is 400°C. If the
unit has a ceramic top, the max temperature setting is 500°C. The only exception
is if the unit is a Professional Series with a ceramic top. In that case when using
probe control, the software limits the Professional ceramic top unit to 400°C. If
the probe is not plugged in, the unit can be set to 500°C.
* CAUTION: If you are using a probe accessory with a Professional unit,
make sure you don't exceed a sample temperature of 250°C, otherwise
the probe tip might become damaged!