Grant SUB User manual

SUB
Universal water baths
SBB
Boiling baths
JB, PB
Unstirred water baths
Operating instructions

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 2 January 2010
Universal water baths
SUB6: 6 litres
SUB14: 14 litres
SUB28: 28 litres
SUB36: 36 litres
Boiling baths
SBB6: 6 litres
SBB14: 14 litres
SBB28: 28 litres
Unstirred water baths
JB1: 3.5 litres
JB2: 10 litres
JB4: 16 litres
JB5: 24 litres
Transparent unstirred water bath
PB1: 3.5 litres

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 3 January 2010
CONTENTS
1 Safety 4
2 Assembly 5
2.1 Unpacking 5
2.2 Installation 5
2.2.1 SUB baths 5
2.2.1.1 Adjustable over temperature cut-out 5
2.2.2 SBB baths 5
2.2.2.1 Constant level device 5
2.2.3 JB baths 5
2.2.4 PB baths 6
3 Operation 6
3.1 SUB Baths 6
3.1.1 Controls and indicator lamps 6
3.1.2 Setting the temperature 6
3.1.3 Setting the over temperature cut-out 6
3.1.4 Resetting the over temperature cut-out 6
3.2 SBB Baths 8
3.2.1 Controls and indicator lamps 8
3.2.2 Over temperature protection 8
3.3 JB Baths
3.3.1 Controls and indicator lamps 8
3.3.2 Over temperature protection 8
3.4 PB1
3.4.1 Controls and indicator lamp 8
3.4.2 Over temperature protection 8
4 Accessories 9
4.1 Individual racks for test tubes and universal bottles 9
4.2 Lid and covers 9
4.2.1 Gabled lids 9
4.2.2 Flat lids with holes 10
4.3 Polypropylene spheres 10
4.4 Raised shelves for SUB baths 10
4.5 Syphon SY1 10
5 Fault diagnosis 11
6 Technical specification 12
6.1 SUB baths 12
6.2 SBB baths 12
6.3 JB baths 12
6.4 PB1 baths 13
7 Maintenance and service 13
7.1 Cleaning 13
7.2 Replacement of Fuses 13
7.2.1 SUB, PB1 and SBB 13
7.2.2 JB baths 14
7.3 Resetting the over temperature cut-out on JB2, JB4 and JB5 baths 14
7.4 Resetting the over temperature cut-out on PB1 baths 14
8Guarantee 14
9 Service 14

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 4 January 2010
1 Safety
The following symbols marked on the equipment mean:-
Caution: Read these operating instructions fully before use and pay particular attention to
sections containing this symbol
Caution: Surfaces can become hot during use.
Caution: Risk of electric shock when cover is removed.
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.
Connect only to a power supply which provides a safety earth (ground) terminal.
Before moving, disconnect at the power supply socket. Do not remove the IEC connector (where
applicable).
Do not check the temperature by touch, use the temperature display or a thermometer.
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.
Ensure that the operating temperature is less than the maximum operating temperature of your
sample material.
Set the adjustable over temperature cut-out (where applicable) after setting or changing the set
temperature, and reset it at monthly intervals to check that the cut-out is operating correctly.
Ensure that the mains switch is easily accessible during use.
Do not block or restrict ventilation slots.
These baths are for use only with water.
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.
Do not connect to a power supply or switch on before filling the tank.
Take care when topping up or draining, as the liquid in the tank may be very hot or cold.
If the alarm lamp is illuminated do not touch the liquid or the heater, they may be very hot. Refill
carefully, a hot heater can cause a spattering of very hot water droplets and scalding steam.
Always use a lid or polypropylene spheres when operating above 60°C. Take care when raising and
removing the lid, it may be hot. Steam and hot vapours can cause scalding.
Drain before moving the bath. Before draining allow the liquid to cool to below 50°C or heat to above
10°C.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 5 January 2010
2 Assembly
2.1 Unpacking
Remove packing materials carefully, and retain for future shipment or storage of the unit.
Packs should contain:
SUB bath SBB bath
mains cable mains cable
operating instructions perforated tray
operating instructions
JB bath PB bath
perforated tray mains cable
operating instructions perforated tray
` thermometer clip operating instructions
2.2 Installation
2.2.1 SUB baths
Fit the mains cable into the IEC power socket on the rear of the unit.
Fill the bath with water. The minimum depth is 50mm above the base of the tank and
the maximum level is 30mm from top of the tank when bath is fully loaded.
A lid or layer of polypropylene spheres must be used with baths above 60C.
CAUTION: To prevent damage to the unit when using FLASKS, the flasks MUST be
placed on a raised tray.
2.2.1.1 Adjustable over temperature cut-out
Before switching the SUB baths on for the first time, using a screwdriver through the hole in the
set over temperature knob, turn the set over temperature control fully clockwise and press.
Plug in and switch on power to the unit.
2.2.2 SBB baths
Fit the mains cable into the IEC power socket on the rear of the unit.
Fill the bath with water. The minimum depth is 50mm above the base of the tank and
the maximum level is 30mm from top of the tank when bath is fully loaded.
A lid or layer of polypropylene spheres must be used with baths above 60C.
2.2.2.1 Constant level device
A constant level device is fitted to the SBB to maintain the required water level. To use the
constant level device, connect the inlet pipe (black) to a water supply and the outlet pipe
(white) to a drain. The level can be adjusted by loosening the white nut and raising or lowering
the white tube. The position of the top of the tube determines the water level. Re-tighten the
white nut.
After filling the bath adjust the water flow rate to the minimum which maintains a constant
water level when the water is boiling. If connecting to a mains water supply, check that local
water supply regulations are complied with.
Plug in and switch on power to the unit.
2.2.3 JB baths
Fill the bath with water. The minimum level is 10mm above the top of the perforated tray and
the maximum level is 40 mm from the top when bath is fully loaded.
A lid or layer of polypropylene spheres must be used with baths above 60C.
Plug in and switch on power to the unit.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 6 January 2010
2.2.4 PB
Fit the mains cable into the IEC power socket on the rear of the unit.
Fill the bath with water. The minimum level is 10mm above the top of the perforated tray and
the maximum level is 40 mm from the top when bath is fully loaded.
A lid or layer of polypropylene spheres must be used with baths above 60C.
Plug in and switch on power to the unit.
Fit the unit inside the raised edges of the plastic case at one end of the bath.
3 Operation
3.1 SUB baths
3.1.1 Controls and indicator lamps
The temperature display shows the water temperature in C.
Set temperature control knob sets the required operating temperature.
Display set temp shows set temperature when pressed.
Heater lamp (orange) indicates when the heater is on.
The heater lamp is on continuously while the water is heating up. As the required temperature
is approached, it starts to flash. When the unit is controlling at set temperature, the heater
lamp flashes intermittently.
Alarm lamp (red) illuminates when the over temperature cut-out has operated.
The set over temperature control sets the operating point of the over temperature cut-out.
The cut-out operates if the bath temperature rises above the temperature at which the cut-out
is set. When it has operated, the red alarm lamp illuminates and the heater is switched off.
The temperature continues to be displayed to warn of possible high temperatures.
3.1.2 Setting the temperature
The display normally shows the water temperature. To show the set temperature at any time,
press the display set temp button. To set the required operating temperature, push the
display set temp button, whilst turning the set temperature control knob until the required
temperature is indicated on the display.
3.1.3 Setting the over temperature cut-out
To protect both the unit and your samples, the over temperature cut-out should be set each
time the required operating temperature is changed. Using a screwdriver, adjustment is via
the hole in the push to reset knob. Turn the control fully clockwise and press to reset. The
cut-out is now set at its maximum. Allow the bath to stabilise at the required operating
temperature. Turn the control slowly anticlockwise using the screwdriver until the red alarm
lamp comes on. Press the outer knob to reset and slowly turn the control clockwise until the
alarm lamp goes out. Turn the control anticlockwise three quarters of the way back towards
the point where the alarm lamp came on. The over temperature cut-out is now set
approximately 10°C above the required operating temperature.
Note: If the required operating temperature is above 95°C turn the control fully clockwise.
3.1.4 Resetting the over temperature cut-out
If the over temperature cut-out has operated, the bath needs to cool to below the set
temperature before the cut-out can be reset. Reset by pushing the outer knob.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 7 January 2010
SUB
Set/over temperature
cut-out knob
Ventilation slots (front and rear)
Bath/set
temperature
display
Fuse drawer
Mains voltage
supply connection
ON/OFF
switch
Display
set temp
Set temp
Alarm
lamp
Heater
lamp
SBB
Ventilation slots (front and rear)
ON/OFF switch
Energy regulation
control
Heater lamp
Over temperature
cut-out reset buttons
Mains voltage supply
connection
Fuse drawer
JB
Heater lamp
ON/OFF
switch
Set temp control
knob

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 8 January 2010
3.2 SBB baths
3.2.1 Controls and indicator lamps
The set heater power knob controls the power of the heater through an energy regulator. It is
not a thermostat.
For heat up, turn the set heater power knob to maximum. Once the water is boiling, turn the
knob to the minimum position which will maintain boiling.
The heater lamp (orange) indicates when the heater is on.
3.2.2 Over temperature protection
Two fixed over temperature cut-outs prevent the heater reaching a high temperature in the
case of low liquid level.
The reset buttons for the cut-outs are on the rear panel.
3.3 JB baths
3.3.1 Controls and indicator lamps
The set temperature knob sets the required operating temperature.
The heater lamp (orange) indicates when the heater is on.
3.3.2 Over temperature protection
The JB1 unit is protected against over temperature by an internal thermal fuse and the other
JB units by a fixed over temperature cut-out.
If the heater lamp does not come on when expected and the temperature of the bath does not
rise, see fault diagnosis (section 5).
3.4 PB 1
3.4.1 Controls and indicators
The temperature knob C sets the required operating temperature.
The heater lamp indicates when the heater is on.
The overtemperature lamp indicates when the protection has activated
3.4.2 Over temperature protection
The PB1 unit is protected against over temperature by a fixed over temperature cut-out. The
overtemperature lamp will come on if it is activated. In addition the heater lamp does not come
on when expected and the temperature of the bath does not rise, see fault diagnosis (section
5).

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 9 January 2010
4 Accessories
4.1 Individual racks for test tubes and universal bottles
Test Tube size
Tubes per rack
J2
J3
P1
10mm
84
102
13mm
55
70
12
16mm
36
44
10
19mm
32
40
9
25mm
18
24
30mm
12
20
Racks per bath
J2
J3
P1
SUB/SBB6
1
--
SUB/SBB14
2
2
SUB/SBB28
4
4
SUB36
6
6
JB1
1
1
JB2
4
2
JB4
3
2
JB5
4
4
PB1
3
4.2 Lids and covers
4.2.1 Gabled lids
Gabled lids direct condensate away from vessels in the bath. They help to reduce evaporation,
and to avoid contamination of samples.
Bath
Gabled lid
SUB/SBB6
LU6
SUB/SBB14
LU14
SUB/SBB28
LU28
SUB36
LU36
JB1
LJ1
JB2
LJ2
JB4
LJ4
JB5
LJ5
PB1
LP1
A gabled lid pack contains:-
cover
handle
2 adapters
2 screws
Assembly instructions: Remove the protective film from the lid. Pass two screws through the
holesinthelid.Threadtheadaptersontothescrews,sothatthe‘v’
cut fits over the ridge of the lid. Hold the handle in position against the
adapters and fasten to the lid by tightening the screws.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 10 January 2010
4.2.2 Flat lids with holes
Flat lids have holes 105mm diameter. Ring sets give alternative hole diameters of 78, 59, 43
and 31mm to accommodate tall vessels. Flat lids minimise evaporation and heat loss, whilst
accommodating tall flasks.
Bath
Flat lid
Ring
sets
SUB/SBB6
LF6
2
SUB/SBB14
LF14
4
SUB/SBB28
LF28
6
SUB36
LF36
JB2
LF2
6
A flat lid pack contains:
cover
set of rings
4.3 Polypropylene spheres
Polypropylene spheres are an alternative to a lid; they minimise evaporation and heat loss,
allow easy access to vessels in the bath, and they are particularly useful for tall vessels.
Bath
Spheres
required
SUB/SBB6
1 x PS20
SUB/SBB14
1 x PS20
SUB/SBB28
2 x PS20
SUB36
3 x PS20
JB1
1 x PS20
JB2
1 x PS20
JB4
1 x PS20
JB5
2 x PS20
PB1
1 x XP20
4.4 Raised shelves for SUB and SBB baths
Raised shelves alter the effective liquid depth of half the bath, to accommodate different
shapes and sizes of vessel simultaneously. Each shelf provides two alternative depths. You
can use more than one shelf per bath to achieve a range of depths. The raised shelves can be
used either way up in the bath to give different liquid depths. The liquid depth can be set by
changing the amount of liquid in the bath.
RS14H covers half the area of SUB/SBB14
RS28H covers half the area of SUB/SBB28
RS36H covers half the area of SUB36.
4.5 Syphon SY1
Use for draining baths.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 11 January 2010
5 Fault Diagnosis
Symptom
Possible cause
Action required
Unit does not operate
Unit not switched on
Switch on
Unit not plugged into power
supply
Plug in, switch on
Power supply failure
Check that other electrical
appliances on the same circuit
are working
Fuse blown in unit or in plug
(UK units only)
Check and replace - see 7.1
SUB Alarm lamp on
or
SBB heater lamp does not
come on
Over temperature cut-out has
operated
Reset cut-out and check its
setting as described in 3.l.3
and 3.1.4.
Check water level
If the cut-out operates again
or cannot be reset, have the
unit checked by a competent
person.
Temperature does not rise
when expected
Set temperature is lower than
liquid temperature (not SBB)
Check set temperature
Set temperature is too close
to ambient (not SBB)
Raise set temperature
JB1 thermal fuse has
operated
Have JB1 thermal fuse
replaced by competent
person, see Service Manual
JB2, JB4, JB5, PB1
Internal over temperature cut-
out has operated
Check water level
Have over temperature cut-
out reset by competent
person.
SBB over temperature cut-out
has operated
Reset cut-out
Temperature control circuit
fault (not SBB)
Have unit checked by
competent person
Temperature continues to rise
when not expected (not SBB)
Set temperature is higher than
water temperature
Check setting
Temperature control circuit
fault
Have unit checked by
competent person

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 12 January 2010
6 Technical Specification
This equipment is for indoor use and will meet its performance figures within the ambient
temperature range 10C to 35C, with maximum relative humidity of 80% non-condensing.
Installation category II (transient voltages). Pollution degree 2 in accordance with IEC 664.
For operation at altitudes of up to 2000 metres.
6.1 SUB baths
Conforms to IEC 61326-1 (EN 61326-1) Class Bexcept where indicated *.
Class B equipment is for use in domestic establishments, and in establishments directly
connected to a low voltage power supply network which supplies buildings used for
domestic purposes.
Class A equipment is suitable for use in establishments other than domestic, and those
directly connected to a low voltage power supply network, which supplies buildings used
for domestic purposes.
Temperature range (Ambient +5C) to 99C
Setting range 15C to 99C
Stability at 37C 0.1C
Temperature display resolution 1C
Supply voltage range 230V 10% @ 50Hz or 120V 10% @ 60Hz
Power Rating SUB6 - 400VA (230v) 450VA (120v)
SUB14 - 750VA (230v) 950VA (120v)
SUB28 - 1450VA (230v) 1600VA (120v)
*SUB36 - 2050VA (230v) 1600VA (120v) (CLASS A)
Over temperature protection Adjustable, resettable safety cut-out
SUB6 SUB14 SUB28 SUB36
Uniformity at 37C 0.2C 0.2C 0.2C ± 2C
Heat-up rate (ambient to max) 90 mins 80 mins 80 mins 80 mins
Overall dimensions l/w/h (mm) 205/325/275 380/325/275 555/325/300 720/325/300
6.2 SBB units
Temperature range 100C only
Supply voltage range 230V 10% @ 50Hz or 120V 10% @ 60Hz
Power rating SBB6 - 1350VA (230v) 1600VA (120v)
SBB14 - 1550VA (230v) 1600VA (120v)
SBB28 - 2050VA (230v) 1650VA (120v)
Over temperature protection Two resettable fixed temperature cut-outs
Constant level device which maintains the required liquid level.
SBB6 SBB14 SBB28
Overall dimensions l/w/h (mm) 205/325/275 380/325/275 555/325/300
6.3 JB units
Temperature range (Ambient +5°C) to 90°C
Setting range 20°C to 90°C
Stability at 37C 0.3°C
Supply voltage range 230V 10% @ 50Hz or 120V 10% @ 60Hz
Power Rating JB1 - 350VA (230V) 350VA (120V)
JB2 - 800VA (230V) 800VA (120V)
JB4 - 800VA (230V) 800VA (120V)
JB5 - 1550VA (230V) 1400VA (120V)
Over temperature protection JB1 - thermal fuse
JB2, JB4, JB5 - Resettable fixed temperature cut-out
JB1 JB2 JB4 JB5
Overall dimensions l/w/h (mm) 335/160/200 450/285/195 355/325/270 530/325/270

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 13 January 2010
6.4 PB1
Temperature range (Ambient +5C) to 60C
Setting range 20 C to 60C
Stability at 37C 0.3C
Supply voltage range 230V 10% @ 50Hz or 60Hz
Power Rating PB1 - 350VA
Over temperature protection Resettable fixed temperature cut-out
Dimensions l/w/h (mm) 355/160/130
7 Maintenance and Service
All Grant laboratory products are designed to comply with IEC1010-1 and can be flash tested.
Some are fitted with radio frequency interference suppressors. Therefore it is recommended
that only a d.c. test is performed.
SUB baths only:
The over temperature cut-out should be checked periodically by turning the set over
temperature control anticlockwise until the alarm lamp comes on. The cut-out should then be
reset and set-up (see 3.1.3). If the alarm lamp fails to light with the knob turned fully
anticlockwise the unit should be checked by a competent person.
No other routine maintenance is required.
7.1 Cleaning
The cases can be cleaned with a damp cloth after disconnection. Do not use solvents. The
immersed parts can be cleaned using proprietary heating element cleaners. CAUTION: these
may be toxic - follow the cleaner manufacturer's instructions.
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
7.2 Replacement of Fuses
7.2.1 SUB, SBB and PB1
Empty the bath. Disconnect the unit from the power supply.
Remove the IEC plug from the socket in the back of the bath.
Press down the fuse drawer catch (see figure).
Pull out the fuse drawer, check and replace with the correct fuses if necessary.
The fuses are Littelfuse 3AB 314 series, fast-acting, high breaking current (max breaking
current at least 750 A); dimensions are 1.25 inch long, 0.25 inch diameter. Replace fuses only
by the same type and rating (250volt).
Model
Fuse Rating (Amps)
Model
Fuse Rating (Amps)
230V
SUB6
5
120v
SUB6
5
SUB14
10
SUB14
10
SUB28
10
SUB28
15
SUB36
10
SUB36
15
SBB6
10
SBB6
15
SBB14
10
SBB14
15
SBB28
15
SBB28
15
PB1
3
Push back the drawer, and replace the IEC plug.

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 14 January 2010
7.2.2 JB baths
The fuse is accessible under the base cover. This should only be replaced by a competent
person.
The fuses are Littelfuse 3AB 314 series, fast-acting, high breaking current (max breaking
current at least 750 A); dimensions are 1.25 inch long, 0.25 inch diameter. Replace fuses only
by the same type and rating (250V).
Model
Fuse Rating (Amps)
Model
Fuse Rating (Amps)
230V
JB1
3
120V
JB1
5
JB2
5
JB2
10
JB4
5
JB4
10
JB5
10
JB5
15
7.3 Resetting the over temperature cut-out on JB2, JB4 and JB5 baths
The over temperature cut-out is accessible under the base cover. This should only be reset by
a competent person.
7.4 Resetting the over temperature cut-out on PB1 baths
The over temperature cut-out is accessible under the top cover. This should only be reset by a
competent person.
8 Guarantee
When used in laboratory conditions and according to these operating instructions, these baths
are guaranteed for THREE YEARS against faulty materials or workmanship.
9 Service
For service, return to our Service Department in the UK, or to our distributor.
Service Address: Grant Instruments (Cambridge) Ltd.
SHEPRETH
Cambs
SG8 6GB
England.
Telephone: [phone] - 260811

SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 15 January 2010

Grant Instruments
(Cambridge) Ltd
Shepreth
Cambridgeshire
SG8 6GB
England
Tel: [phone]
Fax: [phone]
Email: [e-mail]
www.grant.co.uk