Wealtec HB-1 User manual

Wealtec Corp.
HB-1 / HB-2
Block Heater
Installation and Operation Manual
Item # 03040
Version 1.5
*This instrument is intended for laboratory use only
http://www.wealtec.com E-mail: [e-mail]

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Packing List
x 1 main body
x 1 power cable
x 1 manual (packing list & warranty card)
x 1 block extractor
Wealtec Corp.
1885 Meadowvale Way, Sparks, NV 89431, USA TEL: [phone] FAX: [phone]
http://www.wealtec.com E-mail: [e-mail]

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Index
A. Important Notice ---------------------------------------------------------------------------------------------------------- 2
A-1. Warranty
A-2. Technical and Service Contact
A-3. Safety Notice
A-3-1. Certification
A-3-2. Cautions
B. Introduction ---------------------------------------------------------------------------------------------------------------- 7
B-1. Specifications
B-2. Product Descriptions
C. Installation of Block Heater ------------------------------------------------------------------------------------------ 14
C-1. Package list
C-2. Installation
D. Operation ------------------------------------------------------------------------------------------------------------------ 15
E. OFFSET function -------------------------------------------------------------------------------------------------------- 16
F. Care and maintenance ------------------------------------------------------------------------------------------------- 18
G. Order Information ------------------------------------------------------------------------------------------------------- 20

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A. Important Notice
The instrument is designed for laboratory usage only.
Before setting up and operating Block Heater, please carefully read these instructions
to get familiarized with product’s installation and operation process. Instructions shall be
read by well-trained individuals or by technical people from Wealtec Corp. before
operating the instruments.
Any improper usage of the instruments may cause damage, please refer to the safety
notice.
The instrument shall not be modified or altered in any way. Any modification or
alteration will void the warranty, void the regulatory certifications and create potential
safety hazard. Wealtec is not responsible for any injury or damage caused by using the
instrument for any non-intended purpose or by modifying the instrument by any person
who is not authorized by Wealtec Corp.

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A-1. Warranty
Block Heater is warranted to be free from defects in materials and workmanship for a
period of one year from the original invoice date under normal usage.Any defects to occur
during warranty period, Wealtec Corp. will repair or replace defective products or parts
without charge unless the defects arise from below conditions. The defects described
below are specially excluded from Wealtec warranty policy.
1. Improper operation of the instrument
2. Repair or modification by any person who is not authorized by Wealtec Corp.
3. Damage caused by any (in)-direct accident, neglect or misuse.
4. Damage caused by disaster.
5. Damage caused by any improper solvents or samples
A-2. Technical and Service Contact
Most of the operation details are described in the instruction manual. Operator can
find the possible solution according to the instructions. For any other technical/ service
questions, please contact your local representative or contact Wealtec world-wide service
center by E-mail: [e-mail].

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A-3. Safety Notice
A-3-1. Certification
Wealtec Block Heater is designed to meet the international electrical safety standard
EN61010 and EMC regulations. This product is with CE marking. Operation according to
the guidance of instruction manual is certificated safe. Any modification or alteration will
void the warranty, void the regulatory certifications and create potential safety hazard.
A-3-2. Cautions
1. Apply 10% higher or lower voltage than specified on the instrument may cause
malfunction of the Block Heater.
2. Do not splash water or liquid on the block heater, the spilled water or liquid may
cause malfunction of the Block Heater.
3. Do not touch or exchange the block while heating or when block is still hot, it may
scald the operator.

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4. The HB-1 and HB-2 block heaters are only for indoor use.
5. A power cord according to IEC 60227 or IEC 60245 shall be used. The power
supply cord set shall have a supply cord with conductors providing a
cross-sectional area of 3G, 0.75mm2minimum.
6. The equipment only allowed to be connected to socket-outlet with PE. Make sure
the equipment is reliably connected to protective earth before use.
7. Always disconnect the power plug before maintenance.
8. Operate the block heater with volatile liquid may cause damage while heating the
liquid.
9. The lifetime of the electronic components may be shortened if the block heater is
operated with volatile liquid in a poor ventilated environment.
10.Do not directly pour water/liquid/ice on high temperature heating block to cool
down the temperature of the block. It may cause damage to the instrument and
fast-evaporated water/ liquid may be harmful to the operator.
11.Do not dispose of electrical appliances as unsorted municipal waste, use collection
facilities. Contact your local government for information regarding the collection
systems available.
12.If electrical appliances are disposed of in landfills or dumps, hazardous
substances can leak into the groundwater and get into the food chain, damaging

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your health and well-being.
13.When replacing old appliances with new one, the retailer is legally obligated to
take back your old appliance for disposal at least for free of charge.
Symbol used in the equipment:
Symbol
Definition of symbol
Alternating input current
Only on control circuit
The hot surface symbol beside the tank on the enclosure
Do not touch enclosure, tank and block when the heater
operate

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For protective conductor terminal
and
On power switch; O : power off; I : power on
The equipment complies with
B. Introduction
Accurate chemical reaction needs to have well-controlled temperature incubation. For
fast heat transfer, Wealtec block heater offer three types of interchangeable blocks
specified for test tube, micro-centrifuge tube and PCR reaction tubes. Broad range
temperature control from ambient to 200℃is ideal for the applications of restriction
digestion, denaturing of nucleic acids & proteins, hot start PCR, enzyme kinetics reactions,
immunoassays , COD reactions, BUN, coagulation studies, melting agar etc.

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B-1. Specifications
Module Type
HB-1
HB-2
Temperature Range
30 to 200℃
30 to 200℃
Temperature stability @ 100℃
+/- 1℃
+/- 1℃
Temperature uniformity @ 100℃
+/- 1℃
+/- 1℃
Temperature accuracy @ 100℃
+/- 1℃
+/- 1℃
Heat up speed from ambient to
100℃
15 +/- 2 minutes
15 +/- 2 minutes
Temperature controller
Microprocessor
Microprocessor
Temperature control mode
Digital
Digital
Temperature Calibration
Yes（front panel control）
Yes（front panel control）
Heat power (w)
250 W max
500 W max
Over Temp cutoff
212℃
212℃
Number of blocks
1
2
Block material
Solid anodized aluminum
Solid anodized aluminum
Bath internal dimensions
102 x 78 x 46mm
(L x W x H)
156 x 102 x 46 mm
(L x W x H)

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Timer
0-999 minutes
0-999 minutes
Panel Display mode
2 x 3 digital display
2 x 3 digital display
Power
AC 230 V or AC 120V
AC 230 V or AC 120V
Dimensions
310 x 250 x 80 mm
(L x W x H)
310 x 250 x 80 mm
(L x W x H)
Weight with block
4.5 kg
6 kg
Weight without block
3.3 kg
4.8 kg
Warranty
1 year
1 year
Certification
CE
CE
Operating condition
Temperature: 0-40℃
Humidity: 10% to 90% R.H. Non-condensing
Up to 2000m
Pollution degree
II
Installation/overvoltage category
II
Replaceable fuse type
F3.15AL/AC 250V for HB-1, F5AL/AC 250V for HB-2
Block type
12 x 16 mm test tubes, 20 x 1.5 ml microtubes,
30 x 0.5 ml microtubes

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B-2. Product Descriptions
Wealtec Block Heater has two models: HB-1 Block Heater (one block model) and
HB-2 Block Heater (two blocks model). Both models can set heat temperature and timer
control. The interchangeable aluminum blocks offer more applicable tube types. The
digital control module can offer researchers more accurate temperature control for
experiment requirements.

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Individual functional descriptions ---
a. On/Off: Power switch is positioned on backside of the instrument. When power is
turned on, POWER indicator and LED display will light up. Operator shall connect the
instrument to correct voltage source as indicated on the label of instrument.
b. Power cord inlet: The inlet for the power cord is positioned on the backside of the
Block Heater.
c. : Start and Stop control button: Press Start/Stop button to start/ stop the running
of the Block Heater after experiment condition has been set.
d. : The LED display monitors can show all settings/ status value
while setting or running. There are two LED display monitors on the Block Heater.
One is to visualize temperature value（left side）and the other is to display setting/
remaining value of the timer (right side).
e. : Up and Down arrow: Press up and down arrow to select the condition setting
value. There are two sets of up and down arrows on Block Heater: Set temperature

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value (Left side)* and Set value of the timer (right side).
*Note! After start running, DO NOT press Temperature Up and Down arrow. This will
activate instruments OFFSET function. OFFSET function shall not be activated before
running temperature is reached and stabilized. For further information about OFFSET
function, please refer to OFFSET function section described below.
f. : Indicator lights for Power, Heating and Set Temp: When power is
turned on, both Power and Set Temp indicators lights up, inform operator to set
desired temperature. When press Start/ Stop button to start heating, the Set Temp
light will be off and Heating light on.
g. : ℉* and ℃lights: Located on the left side of temperature LED display
monitor. Block Heater’s temperature can be displayed as Centigrade or Fahrenheit.
Simultaneously press temperature up and down key to alternate Centigrade or
Fahrenheit Temperature display.
*Note! Setting functions are not workable when displayed in Fahrenheit

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Temperature. Operator shall press back Centigrade Temperature display to activate
setting functions.
h. : Aluminum Blocks: Wealtec offers three types of blocks: 12 x 16mm test tubes;
20 x 1.5 ml microtubes and 30 x 0.5 ml microtubes

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C. Installation of Block Heater
C-1. Package list:
Standard package
Item
Quantity
Block Heater main frame
1
Aluminum block
1(HB-1) or 2(HB-2)
Block extractor
1
Power cable
1
Installation and Operation Instruction Manual
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C-2. Installation:
1. Unpack the package and take the Block Heater out of the box.
2. Place the Block Heater on a stable, flat surface and proper environment for operation.
3. Make sure the power source has the correct voltage, current and frequency as
indicated on the device.
4. Plug the power cable into instrument’s inlet located at the backside of the Block Heater,
then connect to the power source.

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5. Turn on the power of Block Heater and check all functions as to Operation section
described below. If the Block Heater has any functional defects, please contact your
local representative or Wealtec worldwide service center for assistance.
D. Operation
1. Turn on the On/Off power switch, the Power light and LED monitor will light up. The
temperature LED monitor will display default value of 30℃.
2. Press Temperature Up and Down-key to set the desired value. If the function is not
workable, simultaneously press Up and Down-key to alternate display of Fahrenheit
Temperature to Centigrade display.
3. Press Timer Up and Down-key to set running time. For continuously running without
timer control, set the value to “0”. Timer setting function will then only be activated
under “Stop”situations.
4. After all settings are completed, press Start/Stop button to initiate the Block Heater. By
pressing start button, Heating indicator will light up and Set Temp light will be switched
off. The Temperature LED monitor will flash and display the status of temperature. The

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flash will stop when set temperature is reached and stabilized. Timer LED display will
start to count down after press start button.
Caution! Do not touch the hot top of the Block Heater while running
5. Operate optional OFFSET function, please refer to OFFSET function section described
below.
6. To stop the Block Heater manually, press Start/ Stop button.
E. OFFSET function
OFFSET function is for operator to re-calibrate Block Heater if it is necessary. Due to
every Block Heater has been properly calibrated by calibrated digital thermometer before
product delivery; operator is NOT recommended to use the OFFSET function.
Important Notice: OFFSET functionis is only used under situations as followed:
A. Operator has a standard calibrated thermometer
B. Operator wish to read the value same as their mercury thermometer to keep
experimental conditions at the same standard.
*Note! General laboratory mercury thermometer is not calibrated from

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international standard thermometer. Some temperature variation may occur
with different thermometer.
If necessary to perform any adjustments in the field, please follow procedure as
below:
A. Put a thermometer in the hole of the aluminum block and operate Block
Heater in same way as the Operation section above to start the Block Heater.
B. The OFFSET function is activated only under running condition and the
temperature of block is reached and stabilized at the desired set value
(Temperature LED display stops flashing at this moment).
C. When press the Temperature Up or Down-key under the situation as
described above, the Temperature LED display monitor will be off and Timer
LED display will show 000.
*Note! The function display will be de-activated within 3 seconds if no further
press on Up or Down-key. Press Temperature Up or Down-key to activate the
OFFSET function again.
D. If desired value is lower then displayed value, press down arrow button of
Temperature setting. If desired value is higher then displayed value, press up
arrow button of Temperature setting. The maximum adjustable range is +/-100

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(Equal to +/- 10 ℃) . In this function display, 1 degree equal to 0.1℃
adjustment.
E. For example, if operator’s thermometer displays 98.5℃and Block Heater
shows 100℃. Operator shall press down button of Temperature setting to -15
( 98.5-100= -1.5℃) . After 3 seconds without any further action, display will
automatically return to temperature and timer display.
F. Wait for 30 minutes to make sure the temperature of Block Heater becomes stable.
G. Check temperature with thermometer again and compare to display of the
Block Heater. If the display value still differs from thermometer, repeat the
OFFSET function setting again.
F. Care and maintenance
Blocks shall not be touched while still hot. Operator shall not directly pour
water/liquid/ice on the hot block/ block heater to reduce the temperature of the heating
surface. It may cause damage to the instrument and fast-evaporated water/ liquid may be
harmful to the operator.