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Block heater
BTD/BTDL
Operating instructions
Version 7 - May 2011 Page 2
Operating instructions
BTD/BTDL
Contents
1 Safety......................................................................................4
2 General Information..............................................................6
3 Getting Started.......................................................................7
4 Operation of BTD...................................................................8
5 Fault diagnosis......................................................................10
6 Maintenance..........................................................................11
7 Specifications........................................................................12
8 Guarantee and service.........................................................13
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 3
1. Safety
The following symbols mean:
sections containing this symbol
Always observe the following safety precautions
Use only as specified by the operating instructions, or the intrinsic protection may be impaired.
After transport or storage in humid conditions, dry out the unit before connecting it to the supply voltage.
During drying out the intrinsic protection may be impaired.
Connect only to a power supply with a voltage corresponding to that on the serial number label.
Ensure that the mains switch and isolating device (power supply connector) are easily accessible during use.
Connect only to a power supply which provides a safety earth (ground) terminal.
Before moving, disconnect at the power supply socket.
If liquid is spilt inside the unit, disconnect it from the power supply and have it checked by a competent
person.
It is the user's responsibility to carry out appropriate decontamination if hazardous material is spilt on or
inside the equipment.
Before using any cleaning or decontamination method except those recommended by the manufacturer,
user should check with the manufacturer that the proposed method will not damage the equipment.
Clean the unit only with a damp cloth, do not use chemical cleaning agents.
Do not check the temperature by touch, use a thermometer.
Under the action of high temperature (> 85°C) tube caps can open, thus causing sample volume shrinkage
or potential health risk when working with infected material. To prevent such cases it is recommended to use
tubes with cap lock of Safe-Lock® type.
Caution: Read these operating instructions fully before use and pay particular attention to
Caution: Surfaces can become hot during use.
Version 7 - May 2011 Page 4
Operating instructions
BTD/BTDL
To reduce the risk of eye injury during high temperature operation, use safety goggles or spectacles.
Do not touch surfaces which become hot during high temperature operation.
Allow the unit to cool down before moving it.
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 5
2. General Information
The BTD is a digitally controlled dry block heater, with a unique circular block which can
accommodate three sizes of microtubes.
The BTD with it’s small footprint and powerful heater, for fast heat-up is ideally suited for many life
science applications.
HEATED
BLOCK
LCD
DISPLAY
Version 7 - May 2011 Page 6
KEYPAD
MAINS INPUT
MAINS SWITCH
FUSE
Operating instructions
BTD/BTDL
3. Getting started
3.1 Unpacking
3.2 The BTD pack includes:
» Block heater..........................................................................................1 piece
» Mains cable...........................................................................................1 piece
3.3 Assembly
Remove packing materials carefully, and retain for future shipment or storage of the unit.
» Operating instructions (inc. CE certificate)............................................1 piece
Plug the mains cable into the socket on the rear, and position the BTD so that there is
easy access to the power switch and connector.
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 7
00
00:
4. Operation of BTD
1
2
3
4
C
5
1
:
0
0
40.0
40.0
C
You can accurately set the temperature and time required for your specific task by utilising controls
2
1
and .
In the following example we will assume that you wish to heat the microtubes to a temperature of
40°C for a time of 15 minutes.
4.1 Switch on the BTD.
4.2 Use the p and q buttons ( ) to set the temperature to 40°C.
4.3 The BTD will now start to heat up to the set temperature of
4.4 Place the required microtubes into the block.
4.5 Using the p and q buttons ( ), set the timer to 15 minutes,
Version 7 - May 2011 Page 8
40°C. Once the temperature has been reached, allow time for
the temperature to stabilise.
each press of the button will increase the time by 1minute.
1
2
00:00
00:00
00:00
00:0000:00
00:15
00:00
Operating instructions
40.0 C
25.0 C
40.0 C
31.5 C
40.0 C
40.0 C
BTD/BTDL
Continuous pressure on any of the p and q buttons will speed the display increments.
Under the action of high temperature (> 85°C) tube caps can open, thus causing sample
volume shrinkage or potential health risk when working with infected material. To prevent
such cases it is recommended to use tubes with cap lock of Safe-Lock® type.
4.6 Select Run ( ), the timer will begin, and the microtubes will be
3
kept at 40°C for 15 minutes.
The temperature is maintained independently of the timer and
heating continues after the set time has elapsed. If required
the temperature can be decreased manually.
4.7 Once the 15 minutes has elapsed, an audible warning will
sound. The warning sound will continue until the Stop ( )
4
button is pressed.
The timer process can be terminated at anytime by pressing
the Stop ( ) button.
4
4.8 At the end of work turn OFF the BTD with power switch at the
rear panel.
00:15
00:01
40.0 C
40.0 C
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 9
5. Fault diagnosis
SYMPTOM
NO DISPLAY
TEMPERATURE DOES
NOT RISE WHEN
EXPECTED
TEMPERATURE CONTINUES
TO RISE WHEN
NOT EXPECTED
POSSIBLE CAUSE
Unit not switched on.
Unit not connected to power supply.
Power supply failure.
Fuse blown in unit or plug (UK units
only).
Set temperature is lower than block
temperature.
Set temperature is too close to
ambient.
Thermal fuse has operated.
Temperature control circuit fault.
Set temperature is higher than the
block temperature.
Temperature control circuit fault.
ACTION REQUIRED
Switch on.
Connect to power supply.
Check that other electrical appliances
on the same circuit are working.
Check and replace (see 6.2).
Check set temperature.
Raise set temperature.
Have BTD thermal fuse replaced by a
competent person.
Have unit checked by competent
person.
Check setting.
Have unit checked by competent
person.
Version 7 - May 2011 Page 10
Operating instructions
BTD/BTDL
6. Maintenance
Where applicable
be flash tested. Some are fitted with radio frequency interference suppressers. Therefore it is
recommended that only a D.C. test be performed.
No other routine service is required.
6.1 Cleaning
6.2 Replacement of fuses
all Grant laboratory products are designed to comply with IEC61010-1 and can
The cases can be cleaned with a damp cloth after disconnection. Do not use solvents.
Before using any decontamination or cleaning method except that recommended, check
with our Service Department, or in other countries with our distributor, that the proposed
method will not damage the equipment.
Disconnect from the power supply socket.
Remove the IEC power plug from the rear of
the unit. Pull out the fuse drawer by applying
leverage in recess . Remove the fuse from
the holder. Check and replace with the
correct fuse if necessary.
The fuse should be ceramic quick acting,
rated:
BTD.......................F2AH
BTDL.....................F3.15AH
A
A
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 11
7. Specifications
The product is designed for operation indoors in a laboratory at altitudes up to 2000m
the performance figures quoted within the ambient temperature range 10°C to 35°C, with maximum
relative humidity of 80% and is safe for use in an ambient temperature up to 40°C.
Installation category II (transient voltages). Pollution degree 2 in accordance with IEC 60664.
For operation at altitudes of up to 2000 metres.
Setting range ...............................................................................from +25°C to +100°C
Temperature range..........................................................from ambient +5°C to +100°C
Temperature stability
in range from ambient +5°C to 85°C............................0.1°C
in range from 85°C to 100°C....................................... 0.2°C
Temperature uniformity
in range from ambient +5°C to 85°C .........................±0.1°C
at 85°C ....................................................................±0.25°C
at 100°C ....................................................................±0.5°C
Supply voltage range ......................................................................220-240V 50/60Hz
110-120V 50/60Hz
Heater power.......................................................................................200W (220-240V)
200W (110-120V)
Over temperature protection.........................................................internal thermal fuse
To improve the design manufacturer reserves the right to make changes in specification
without prior notice.
and will meet
Version 7 - May 2011 Page 12
Operating instructions
BTD/BTDL
8.1 Guarantee
When used in laboratory conditions and according to these working instructions, this
product is guaranteed for TWO YEARS against faulty materials or workmanship.
8.2 Service
For service, return for repair to our Service Department in the UK or, in other countries,
to our distributor.
8. Guarantee and Service
BTD/BDTL
Operating instructions
Version 7 - May 2011
Page 13
Version 7 - May 2011 Page 14
Operating instructions
BTD/BTDL
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BTD/BDTL
Operating instructions
BTD
BLOCK HEATER
Version 7 - May 2011
Page 15
-bio
Grant Instruments
(Cambridge) Ltd
Shepreth,
Cambridgeshire
SG8 6GB
Tel: +44 (0)1763 260811
www.grant.co.uk
sales@grant.co.uk
Fax: +44 (0)1763 262410
Block heater/BTD/18209/7
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