Thermo Scientific Precision 280 Series Скачать руководство пользователя страница 8

3

5.02

Electrical Connections -

WARNING

FOR PERSONAL SAFETY, THIS APPARATUS MUST
BE PROPERLY GROUNDED.

1.

The power cord provided on this unit is
equipped with a three-prong (grounding) plug
which mates with standard three-prong
grounding wall receptacle to minimize the
possibility of electric shock hazard from this
apparatus. If in doubt the user should have the
wall receptacle and circuit checked by a
qualified electrician to make sure the
receptacle can provide adequate current and
is properly grounded.

2.

Where a standard two-prong wall receptacle
is encountered, it is the personal responsibility
and obligation of the user to have it replaced
with a properly grounded three-prong wall
receptacle. 

Do not, under any

circumstances, cut or remove the third
(ground) prong from the power cord.  Do
not use a two-prong adapter plug.

5.03

Determine the total amount of current being
used by other apparatus connected to the
circuit that will be used for this apparatus.  It
is critical that the added current demand (see
nameplate) of this and other equipment used
on the same circuit does not exceed the
rating of the fuse or circuit breaker.

Environmental Conditions-

This instrument is designed to operate safely under
the following conditions:

Indoor Use Only

Temperature: 5

° 

to 40

°

 C

Maximum Relative Humidity: 80% for
 temperatures to 22

°

C

Maximum Altitude 2000 meters

Maximum performance is assured across the
following temperature range:

15ºC to 45ºC

CAUTION

• BE SURE THAT THE POWER SUPPLY IS OF THE

SAME VOLTAGE AS SPECIFIED ON NAMEPLATE.

• BE SURE THAT THE WALL RECEPTACLE IS

READILY IDENTIFIABLE AND EASILY REACHED
TO DISCONNECT UNIT FROM POWER SOURCE.

DIFFUSER PAN

LEG EXTENSION KIT

4.0

PERFORMANCE DATA

4.01

The following performance specifications

for bath models 280 through 288 are 

valid only

when the gable cover is in place.

Control sensitivity @ 37C = ±0.1C
Temperature uniformity @ 37C = ±0.2C
Minimum bath temperature = A5C
Maximum bath temperature

5.0

INSTALLATION

WARNING

INSTALLATION SHOULD BE COMPLETED BY
QUALIFIED PERSONNEL ONLY.

5.01

1. The most uniform operating conditions and
results will be obtained by placing the bath on
a level surface in an area remote from drafts,
ventilating outlets, radiators, and other rapidly
changing ambient conditions.

2. Place the stainless steel metal shelf
(corners facing downward) inside the bath
chamber. The shelf  (Diffuser Pan) provides
a sample base and protects samples from
touching the hot metal bath bottom. If it is
necessary to increase the height of the diffuser
pan, a Leg Extension Kit is included for this
purpose,  except for the Model 2829/2830.
Following the figure shown below, attach the
4 extension legs to each of the four corners of
the diffuser pan.

Содержание Precision 280 Series

Страница 1: ...833 2834 283 2837 2838 284 2841 2842 285 2845 2846 286 2849 2850 and 288 2853 2854 Press ENTER New Set Point is accepted Display will then return to actual temperature Should Calibration Be Required P...

Страница 2: ...D FOR DOMESTIC USE A U S STYLE POWER CORD P N 3176836 MUST BE ORDERED SEPARATELY Table 3 1 Listing of Models Included in this Manual Model Number Catalog Number Electrical Characteristics Capacity 240...

Страница 3: ...8 9 12 17 D E F G H I NOV01 4 05 5 06 1 08 9 08 10 09 Add caution acidic caustic substance new manual manufacture location consolidated with the 240V manual 3177693 updated specs Added warning not to...

Страница 4: ...1 3 General Information 2 4 Performance Data 3 5 Installation 3 6 Explanation of Controls 4 7 Operation 5 8 Maintenance 6 9 Troubleshooting 7 10 Parts Replacement 10 11 Replacement Parts List 12 12 A...

Страница 5: ......

Страница 6: ...ll support of your claim to be compensated for loss or damage in transit DO NOT for any reason return this unit to Thermo without first obtaining returnauthorization Inanycorrespondence with Thermo pl...

Страница 7: ...out is provided in theeventofanemptywaterbath Ifthesensor reads a temperature 5 C higher than the set temperature a high temperature cutout will occurindicatedbyadisplayreadingof EEE andtheheaterwillb...

Страница 8: ...y Temperature 5 to 40 C Maximum Relative Humidity 80 for temperatures to 22 C Maximum Altitude 2000 meters Maximum performance is assured across the following temperature range 15 C to 45 C CAUTION BE...

Страница 9: ...d provides power to the entire unit 6 02 Control Panel The Control Panel provides a digital readout of temperature readings heater on indicator and keys for user to make their desired selections 1 LED...

Страница 10: ...o change the set temperature continuously press the or key until the desired set temperatureisdisplayed Whencontinuously pressing either the or keys the display changes slowly at first but after 1 deg...

Страница 11: ...ous Chloride Mercury Salts LysolMercuric Chloride Phenol Potassium Permanganate Stanous Chloride Sodium Hypochlorite Tartaric Acid Potassium Thiocyanate 3 Should the stainless steel ever become discol...

Страница 12: ...bleshooting information on the baths This table provides the basic information required to repair the bath 9 03 No Heat 1 Verify that setpoint temperature is greater than the actual water temperature...

Страница 13: ...ater Then using the chart below determine which reading you should obtain depending on the model On most of the 240 volt models there are two separate heaters which are connected in series The values...

Страница 14: ...her 120 or 240 volts across the heater If not the control board should be replaced 1 Use gable cover provided to improve temperature control 2 Verify that temperature setpoint is set at desired value...

Страница 15: ...mp Loosenthenutthatholdstheclampwhichinturnholdsthesensor inplace Notethatthesensorhasitsflatsideagainstthepan When installing a new sensor it is important to do the same 4 Reverse the procedure to in...

Страница 16: ...trol board 5 Remove the 4 nuts that support the board Remove the control board and replace it then reverse this procedure 10 05 Replace Control Board cont 10 06 Replace Diffuser Pan Leg Extension 1 At...

Страница 17: ...3166202 3161572 3166202 3166203 3166206 3166217 3166218 3166203 240 Volt Models 2826 2830 2834 2838 2842 2846 2850 2854 Pan 3177554 3177576 3177572 3177573 3177577 3177574 3177578 3177573 Diffuser Pl...

Страница 18: ...r Place ce rtifie d tr ace ab le therm om ete r into holde r Should Calib r ation Be Require d Display will the n return to a ctual te mp er ature Pre ss ENTER New Se t Point is acce pte d Pre ss or u...

Страница 19: ...14 120V UNIT TYPICAL REAR VIEW GLASSWOOL INSULATION THERMOMETER HOLDER POWER LINE CORD...

Страница 20: ...15 240V UNIT TYPICAL REAR VIEW GLASSWOOL INSULATION THERMOMETER HOLDER POWER LINE CORD RECEPTACLE...

Страница 21: ...SWITCH PCB ASSEMBLY 120V UNIT TYPICAL BOTTOM VIEW POWER HARNESS HEATER HARNESS HEATER HEATER INSULATOR POWER LINE CORD THE FLAT SIDE OF THE SENSOR MUST COME IN CONTACT WITH THE PAN TEMPERATURE PROBE...

Страница 22: ...F SWITCH PCB ASSEMBLY 240V UNIT TYPICAL BOTTOM VIEW POWER HARNESS HEATER HARNESS HEATER HEATER INSULATOR POWERLINE CORD THE FLAT SIDE OF THE SENSOR MUST COME IN CONTACT WITH THE PAN TEMPERATURE PROBEA...

Страница 23: ...18 TEMPERATURESENSOR POWERLINE CORD DETAIL A POWER HARNESS PCB ASSEMBLY HEATER HEATER HARNESS POWER SWITCH 120 VAC WIRING DIAGRAM NOTE JP3 JP4 MUST BE INSTALLED FOR 120 VAC OPERATION...

Страница 24: ...NOTE JP3 JP4 MUST BE REMOVED FOR 240VAC OPERATION 240 VAC WIRING DIAGRAM POWERLINE CORD POWER SWITCH TEMPERATURESENSOR PCB ASSEMBLY HEATER HARNESS HEATER POWER HARNESS DETAIL A POWER RECEPTACLE WITHFU...

Страница 25: ...warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo Fisher Scie...

Страница 26: ...eplacement or repair of components parts or equipment under this warranty shall not extend the warranty to either the equipmentortothecomponentpartbeyondtheoriginalwarrantyperiod TheTechnicalServicesD...

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