V&P Scientific VP 741GA Series User manual

9823 Pacific Heights Boulevard, Suite T, San Diego, CA 92121
[phone] ●Fax: [phone] ● email: [e-mail]
TECHNICAL NOTE 349
OPERATION MANUAL FOR
VP 741GA SERIES HEATING BLOCKS
Figure 1. VP 741GA Heating Block with Controller
Figure 2. Front Face of Controller (left) with Power Cable plugged in. Bottom of Heating Block
showing a polypropylene SBS base for registration

V&P Scientific, Inc. 2 Technical Note 349 03/06/18
WARNING!!!!!
VP 741GA Series Heating Blocks can be very hot when operating, so exercise caution.
Do not handle black aluminum heating portion of the unit while it is HOT!!
Table 1. Models of VP 741GA Heating Blocks
VP 741GA
Graphite Heating Block For One Deep Well Block, Temperature Control 25 To
200 Degrees C, With Electrical Cable And RTD Exiting the Unit, Controller
included
SET-UP
HEAT BLOCKING INSTALLATION
1. Carefully remove Heating Block and Controller from packaging inside shipping box. Place the
Heating Block on a working surface that is clear of heat sensitive items, such as paper or equipment,
or heat conducting material.
2. Connect power cord into the power receptacle on the front of the Controller. Connect the power cord
to a 120 V outlet.
OPERATION
HEATING BLOCK OPERATION USING THE CONTROLLER
1. Turn on the Controller using the on/off power switch. The red number in the upper display is the
current temperature of the Heating Block.
2. Setting the Temperature: Push the “P” key until you reach the display that shows SP (Set Point).
Adjust to your desired temperature, represented in Celsius, using the arrows. Push the “F” key to
start the Heating Block. This will light up the “Out Run” display. Push the “P” key 3 times to see the
current temperature of the heating block. You will see the temperature begin to rise to your SP.

V&P Scientific, Inc. 3 Technical Note 349 03/06/18
3. Setting the Timer: Push the “P” until you see the “Time” display. Set your time in HH:MM. Please
note that the timer will not start counting down until the heating block has reached the Set Point
temperature.
4. It is not advised to adjust the rAtE setting.
Figure 3. Controller Display for a VP 741GA Series Heat Block
3. Although the center of the Heating Block will be at the temperature on the display, the actual
temperature of samples in the microplate wells or tubes will be 3°C to 5°C below this temperature
depending upon the efficiency of heat transfer. It is recommended that the temperature in one or more
samples be measured to determine appropriate setting for a particular application.
4. For faster heat transfer, use a Heating Block Insert such as one that conforms to the bottom of a
plate. Visit our website for our line of Heating Block Inserts. http://vp-sci.com/products/heating-
cooling/heatblock-inserts.html
5. The upper limit temperature on the Controller is set to 150oC at the factory. Temperatures higher
than 120oC should not be used with polypropylene tubes or microwell plates. Polypropylene will melt at
temperatures greater than 130oC. To operate at temperatures above 120oC, use of glass or other high
temperature-stable containers is recommended.
OPERATION WITH A MAGNETIC TUMBLE STIRRER
If using with a V&P Scientific Magnetic Tumble Stirrer, please also follow the instructions for the Stirrer.
The VP 741GA Series Heating Blocks are made of graphite which does not produce Eddy Currents
with magnetic fields. They are ideal for stirring applications. Please contact V&P Scientific for more
information.
Product Maintenance
GENERAL PRODUCT CARE
When not in use, turn the power switch off.
Do not place the Controller in chambers with temperatures above 40oC.
Do not submerse Heating Block or Controller into liquid or allow liquid to come into contact with any
openings.
Function Key
(F)
Program
Key (P)
Up/Down
Arrows
Power
Cable
On/Off
Power
Switch

V&P Scientific, Inc. 4 Technical Note 349 03/06/18
Do not for any reason open the Controller enclosure or the heating element compartment of the
Heating Block. This will void the warranty.
For any other questions regarding the Controller, please refer to the Control Instructions (Appendix).
If technical assistance is required, contact:
V&P Scientific, Inc.
9823 Pacific Heights Blvd., Suite T
San Diego, CA 92121
Ph: 858-455-0643
Fax: [phone]
[e-mail]
WARRANTY
V&P Scientific, Inc. warrants this product to be free from defects in material and workmanship when
used under normal laboratory conditions for one year. This warranty begins on the date of delivery
from V&P Scientific.
In the event this product fails under normal laboratory conditions within the specified period of time
because of a defect in material or workmanship, V&P Scientific will, at its option, repair or replace the
product. Damage to the product caused by user negligence is not covered.
Please keep the special shipping carton in case the unit needs to be shipped back to V&P Scientific.
Please contact V&P Scientific at the above address for return authorization and shipping instructions.
This warranty is made in lieu of other warranties expressed or implied including the warranties of
merchantability and fitness for a particular purpose. V&P Scientific shall not be liable for loss or
damages arising from the use of these products nor for consequential damages of any kind.