Thermo Scientific 20ERCETSA Manuale utente

Installation and Operation Manual

Thermo Scientific

Explosion-Proof

Refrigerators and Freezers

326805H01 Rev. D

Explosion-Proof Refrigerators

and Freezers

Model No:

20ERCETSA, 20EREETSA, 20EFEETSA

20EREETSV, 20EFEETSV, 20ERCETSV

Table of Contents

Safety Information.............................................................................................................................................. ..1

Alert Signals................................................................................................................................................ ..1

Intended Use ..................................................................................................................................................... ..3

Explosion Proof Refrigerators and Freezers.........................................................................................................4

Unpacking.......................................................................................................................................................... ..5

Visible Loss or Damage.................................................................................................................................5

Concealed Loss or Damage..........................................................................................................................5

Performance Characteristics................................................................................................................................6

Temperature Ranges.....................................................................................................................................6

Electrical Requirements............................................................................................................................... ..6

Installation.......................................................................................................................................................... ..7

Electrical...................................................................................................................................................... ..7

Be Advised................................................................................................................................................... ..7

Electrical Connection Check Points ...............................................................................................................8

Leveling the Unit.......................................................................................................................................... 12

Wiring.......................................................................................................................................................... 12

Electrical Connection................................................................................................................................... .13

Operation........................................................................................................................................................... 15

Initial Startup................................................................................................................................................ 15

Temperature Control....................................................................................................................................15

Condensate Disposal...................................................................................................................................15

Material Compatibility.................................................................................................................................. 15

Troubleshooting............................................................................................................................................... ...16

Maintenance..................................................................................................................................................... ..17

Cabinet Cleaning....................................................................................................................................... ..17

Condenser................................................................................................................................................. ..17

Warranty...............................................................................................................................................................18

Safety Tips................................................................................................................................................... 14

Explosion-Proof Refrigerator and Freezer Installation....................................................................................8

Selecting a Location......................................................................................................................................12

Shelves....................................................................................................................................................... .13

Door Seal.................................................................................................................................................... .14

Safety Information

Your satisfaction and safety are important to Thermo Scientific and a complete understanding of this unit is

necessary to attain these objectives.

As the ultimate user of this apparatus, it is your responsibility to understand its proper function and operational

characteristics. This instruction manual should be thoroughly read and all operators given adequate training

before attempting to place this unit in service. Awareness of the stated cautions and warnings, and compliance

with recommended operating parameters – together with maintenance requirements – are important for safe

and satisfactory operation. The unit should be used for its intended application; alterations or modifications will

void the Warranty.

This apparatus is designed for use in Class I, II or III locations as defined by the National Electrical Code, unless

otherwise noted.

Alert Signals

OFF

Safety Alert

Important operating instructions. To reduce the risk of injury or poor

performance of the unit read the user manual before putting the

equipment into operation.

DANGER Indicates an immediately hazardous situation, which if not avoided,

will result in death or serious injury.

WARNING Indicates an immediately hazardous situation, which if not avoided,

will result in death or serious injury.

CAUTION Indicates an immediately hazardous situation, which if not avoided, may

result in minor to moderate injury.

CAUTION (Without Safety Alert Symbol) indicates a situation that may result in

property damage.

Shock Hazard

Use of this equipment involves power supplies which convert line voltage

to low voltage power. Do not modify or use power supplies other than

OEM equipment. Connection of the power supply may require a properly

grounded receptacle. Potential for electrical shock or equipment damage

exists if precautions are not followed.

Frost bite/ Low

Temperature

Avoid contact with cold freezer surfaces potential for cold burns or skin

sticking to cold surfaces.

(No Symbol)

DANGER RISK OF CHILD ENTRAPMENT Before you throw away your old refrigerator or

freezer:

•Take off doors.

• Leave the shelves in the place so that children may not easily climb inside.

If the equipment is used in a manner not specified by the manufacturer, the protection provided

by the equipment may be impaired.

Safety Information

Intended Use

The Refrigerators/Freezers described in this manual are for

professional use only. These products are intended for use in

research for the storage of samples or inventory in the

following temperature ranges:

+1°C to +12°C

WARNING

Only Explosion Proof Units or

Flammable Material Storage Units

are to be used for the storage of

flammable inventory/samples.

These are not considered medical devices and have therefore not

been registered with a medical device regulatory body (e.g. FDA):

that is, it has not been evaluated for the storage of samples for

diagnostic use or for samples to be re-introduced to the body.

Corrosive Materials Requiring Refrigerated or Frozen Storage

Refrigerators

Freezers

For 20EFEETSV

-12°C to -20°C

-18°C to -28°C

• Only use models rated as Corrosion Resistant.

•Corrosion Resistant does not mean Corrosion Proof – Care in storage

is still required.

• Store only corrosive reagents/samples which truly need

reduced temperature storage.

• Flammable corrosive materials require Flammable Material Storage or

Explosion Proof models labeled for the storage of corrosives.

•Containers must be wiped clean of moisture and chemical residue

before being introduced into the unit and upon return from use.

•Containers must be sealed with either vinyl tape or Parafilm ®.

•Reagents/samples which release HX (X= F, Cl, Br, I) on contact with

moisture (e.g. Acyl halides, Organosilyl halides etc.) are particularly

damaging to metals.

• Volatile amines will react with HX depositing salts which will

lead to corrosion of metal surfaces.

• Volatile organic acids can exacerbate metal surfaces already

compromised, be sure these are securely sealed.

•Refrigerated compartments are cool or cold areas but they are not to

dry seal your reagents and samples.

• Bleach solutions release chlorine gas which can react with

other volatiles in the cooling chamber or directly attacks metal surfaces.

• Periodically clean the interiors, clean up spills or leaking containers

• Failure to take precautionary actions may lead to damage not covered

by warranty claims.

Parafilm ® is a registered trademark of Bemis Company, Oshkosh, WI.

Explosion-Proof

Refrigerators and Freezers

Overview

Conventional refrigerators and freezers are not suitable for storing flammable

materials. Such units have components in their electrical and refrigeration

systems that can trigger explosions of flammable air-vapor mixtures inside the

unit and/or in the immediate surrounding area.

The Authority having Jurisdiction (AHJ) determines if work areas are

designated as a hazardous location with respect to the presence of flammable

gases or vapors. Such locations are defined in (National Fire Protection

Agency) NFPA 70 Articles 500-501 and OSHA 29 CFR1910.307. Some of

these classified areas are expected to experience concentrations of flammable

gases and/or vapors at or above their lower flammability limits for extended

periods of time.

The construction of our explosion-proof units has been evaluated by

Underwriters Laboratories (UL)1 are suitable for use in classified areas

requiring Class I, Groups C and D* protected equipment. The electrical

components such as thermostats, wiring, splices, relays and compressor

motors on explosion-proof units are safely housed within explosion-proof

enclosures and conduit. Compressor surface temperatures have been

evaluated and determined to remain below the flash point of materials found in

Class I, Groups C and D. All models have heavy-gauge, rigid, steel

construction with a durable enamel finish. Interiors have epoxy coated steel

construction. Each unit is insulated throughout for energy-efficient operation.

These units are ideal for storing ethyl ether, acetone, alcohol, benzene,

gasoline, hexane, lacquer solvent vapors, naphtha, along with many other

potentially hazardous materials.

WARNING: For FMS and EXP units where flammable materials are stored in

the cooling chamber, the cooling chamber is considered a Class I Div1 or Class

I Zone 1 hazardous location. Any monitoring devices placed in the cooling

chamber must have an intrinsically safe rating from an appropriate certification

body, such as UL, CSA, FM etc. (this includes battery or solar powered

devices).

Thermocouples for building monitoring systems must be wired through an

electrical barrier designed to provide isolation against voltage and current

spikes, which could cause a spark resulting in fire or explosion. It is the end

user's responsibility to meet these requirements. Thermo Fisher Scientific

cannot assist with the selection of devices, recommend, approve or design any

device or monitoring circuit.

*The notation Class 1, Groups C and D is an accepted abbreviation for Class 1

Div 1, Groups C and D; Class I Zone 1 Group IIB.

1 20xxxxTSV models are not evaluated or certified by UL.

Unpacking

Save all packing material if apparatus is received damaged.

This merchandise was carefully packed and thoroughly

inspected before leaving our factory.

Responsibility for its safe delivery was assumed by the carrier

upon acceptance of the shipment; therefore, claims for loss or

damage sustained in transit must be made upon the carrier by

the recipient as follows:

Visible Loss or Damage

Note any external evidence of loss or damage on the freight

bill, or express receipt, and have it signed by the carrierʼs

agent. Failure to adequately describe such external evidence

of loss or damage may result in the carrierʼs refusing to honor

your damage claim. The form required to file such a claim will

be supplied by the carrier.

Concealed Loss or Damage

Concealed loss or damage refers to loss or damage, which

does not become apparent until the merchandise has been

unpacked and inspected. Should either occur, make a written

request for the carrierʼs agent within 15 days of the delivery

date; then file a claim with the carrier since the damage is the

carrierʼs responsibility.

If you follow the above instructions carefully, we will guarantee

our full support of your claim to be compensated for loss from

concealed damage.

DO NOT – FOR ANY REASON – RETURN THIS UNIT

WITHOUT FIRST OBTAINING AUTHORIZATION.

Performance Characteristics

Temperature Ranges

Freezer: -12° to -20°C (-4° to 10°F)

For 20EFEETSV: -18° to -28°C (-0.4° to -18.4°F)

Refrigerator: 1° to 12°C (34° to 54°F)

Electrical Requirements

For 20ERCETSA, 20EREETSA and 20EFEETSA

115 Volts ±10%, 60 Hz, 5.0 Amps

For 20EREETSV, 20EFEETSV and 20ERCETSV

230 Volts ±10%, 50 Hz, 2.0 Amps

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