Grant C1G User manual

Refrigerated immersion
Coolers
C1G, C1GL
C2G, C2GL
Operating Manual

CONTENTS
1. Safety 4
2. Getting started 5
2.1 Unpacking 5
2.2 Installation 5
2.2.1 C1G, C2G 6
2.3 Specifications 6
3. Maintenance and service 7
3.1 C1G, C2G 7
3.2 Cleaning 8
3.3 Replacement of fuses 8
4. Guarantee 8
5. Service 8
6. Compliance 9

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.
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.
•When lifting use top flange by the ventilation grilles at the front and rear or lift from under the
base.
•Ensure that the mains switch is easily accessible during use.
•Do not block or restrict ventilation slots.
•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.
When using with Baths
•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.

2. Getting Started
2.1 Unpacking
Remove the packing materials carefully, and retain for future shipment or storage.
2.1.1 Cooler
C1G:
The pack should contain:
C1G Cooler
Mains cable
Cooling coil locator pack
These instructions.
C2G:
The pack should contain:
C2G Cooler
Mains cable
Cooling coil locator pack
These instructions
2.2 Installation
WARNING: The equipment must be earthed (grounded). It is protected by electrical fuses. We
strongly recommend that the power supply to any equipment for heating liquids should include a
residual-current circuit breaker (earth leakage trip).
Check that the voltage rating of the products, given on the serial plate at the power cable
entry, is correct for your supply.
Fit the mains cable into the IEC socket at the rear of the unit. The mains (power) switch is at the
rear of the unit.
Switch on at the rear. Always ensure that the bath is switched on to provide temperature control,
and to prevent the formation of ice
Do not switch on if :
-the temperature of the liquid in the bath is above 100°C
-the cooler has been tilted by more than 25° during the past six hours
-the interval since switching off the cooling system is less than 10 minutes
Condensed water vapour from the air will dilute water/glycol mixture and eventually ice will form on
the cooling coil. This should be removed and liquid replaced, otherwise cooling power will be
reduced.
2.2.1 C1G, C2G
The C1G and C2G are designed for use with the Grant Optima, Y and W Series baths. The C2G
is only suitable for fitting in the 26, 28 and 38 litre baths.
For fitting coiling coil in the Optima, Y and W series baths refer to instruction included with cooling
coil locator pack.
Ensure that the unit is located so that the ventilation grilles are not less than 100mm from any
obstruction.
The cooling coil may be immersed in liquids up to 100°C but the cooler should only be used to cool
down the liquid not to operate continuously above 40°C.
Immersed material: the cooling coil is nickel plated copper.

2.3 Specifications
C1G
C2G
Cooling power
@ 20°C
350W
400W
@ 0°C
110W
320W
Overall power
consumption
300VA
500VA
Refrigeration gas
R134A
100g
160g
Dimensions
d/w/h
460/305/225mm
460/305/225mm
Flexible pipe
length
925mm
925mm
Coil
Diameter
/length
77/55mm
77/105mm
Electrical Supply
240V 50 Hz
120V 60Hz
240V 50Hz
120V 60Hz
Weight
16Kg
21Kg

3 Maintenance and Service
All Grant laboratory products are designed to comply with IEC61010-1 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.
3.1 C1G, C2G
Dust the refrigeration condenser: Cooling power will be reduced if the fins behind the front grille
become clogged with dust. Examine monthly and, if necessary, call a competent person to take
off the cover and remove the dust.
Disposal
This unit contains refrigerant gas, which must NOT be discharged to the atmosphere. At the end
of the unit’s working life, either have the gas removed safely by using refrigerant recovery
equipment or return the unit to us for disposal.
3.2 Cleaning
The cases can be cleaned with a damp cloth after disconnection. Do not use solvents. The
immersed parts can be cleaned with soapy water.
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.
3.3 Replacement of fuses
Disconnect the unit from the power supply socket. Remove the IEC power plug from the rear of
the unit. Press down the drawer catch. Pull out the fuse drawer, check and replace with the
correct fuse, if necessary, as follows:
1.25 x 0.25 inch ceramic quick acting rated:
C1G: 240V: 5AF 120V: 10AF
C2G : 240V: 10AF 120V 20AF
Push back the drawer and replace the IEC plug.

Guarantee
When used in laboratory conditions and according to these working instructions, this equipment is
guaranteed for THREE YEARS against faulty materials or workmanship.
Service repairs outside of the guarantee period, carried out by Grant Instruments, carry a further
one year guarantee.
4. Service
For service, return for repair to our Service Department in the UK or, in other countries, to our
distributor.
Grant Instruments (Cambridge) Ltd
Service Department
SHEPRETH
Cambridgeshire
SG8 6GB
England
Tel: [phone]
E-mail: [e-mail]

5. Compliance
6.1 WEEE Directive
In Europe, at the end of its life the unit must be disposed of in accordance with the WEEE
directive, For information regarding WEEE collections in the UK please contact our B2B
Compliance Scheme directly on 01691 676 124
Grant Instruments complies fully with the Waste Electrical & Electronic Equipment (WEEE)
regulations 2006. We are a member of the B2B compliance scheme (Scheme Approval Number
WEE/MP3338PT/SCH), which handle our WEEE obligations on our behalf. Grant Instruments
have been issued with a unique registration number by the Environmental Agency, this reference
number is WEE/GA0048TZ.
For other countries please contact your equipment supplier.
For General WEEE information please visit: www.b2bcompliance.org.uk
6.2 RoHS Directive
All the products covered by this manual comply with the requirements of the RoHS Directive
(Directive 2011/65/EC). This means the products are free of Lead and other hazardous
substances covered by the directive.
6.3 Electrical safety and Electromagnetic compatibility
All the products covered by this manual comply the requirements of the Low Voltage Directive
(2014/35/EC) for Electrical safety and the EMC directive (2014/30/EC) for Electromagnetic
compatibility.
6.4 REACH Regulation
This product does not contain any SVHCs at greater than 0.1% that must be identified in
accordance with Regulation (EC) No 1907/2006 and therefore does not have an entry in the SCIP
database

Notes

Grant Instruments (Cambridge) Ltd Representative in the European Union
Shepreth Grant Instruments Europe B.V
Cambridgeshire Strawinskylaan 411
SG8 6GB WTC, Tower A, 4th Floor
UK 1077 XX AMSTERDAM
THE NETHERLANDS
Tel: [phone]
[e-mail] [email protected]tinstruments.com
www.grantinstruments.com
16601 V9 DMN S90 July 2021