• Author / Uploaded
• Ronald Rubina Justo

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Operator Instructions D.C. Counter

DBC-6, DBC-9, DBC-8E

1、 Check electrical specifications and plug into a properly

Features Indication: DBC-8E

grounded outlet for DBC-8E. (DBC-6 & DBC-9 are

CLEAR: Press this key, all units then register zero.

mechanically operated, main power is not required)

LOCK: Press this key to stop all counting; one more press to the normal operation.

2、 The D.C. Laboratory counter has been designed for simple % : Press this key, percentage of each unit can be read operation. Before each use, be sure that all the units are set at zero. To reset the units, press the CLEAR key, or

directly from each window. DECREASE: Press this key, then each stroke will decrease 1 number

turn the reset knob, all unit will then register ZERO.

both in Totalizer and the corresponding unit.

3、 When counting, press down only one key at a time.

NOTE:

Be sure to press all the way down like typewriter and to

After functioning LOCK, % or DECREASE, one more press of this

release the key completely.

Key will function again to the normal operation.

4、 When making a differential white cell count, press the

PARTS LIST

key, under the corresponding illustration, representing the cell type observed in the microscope. When the

DBC-8E

DBC-9

shown in each window is a fraction of 100 and therefore

4

Exterior case

3

Flywheel, figure

equals the percentage of that type cell in the sample of

6

Circuit Board

10

Key, plastic

blood which has been counted.

7

Button

14

Spring, key

Totalizer reaches 100 and the sound buzzes, the number

8

Transformer

18

Bell

5、 Each stroke registers both in unit corresponding to its

15

Knobs pressed key and in the Totalizer. The Totalizer is the unit on the extreme up. It records the total number of strokes made on all keys. When the Totalizer records 200, 300 etc., a long sound buzzes, while each stroke comes with a short sound.

6、 For a more accurate count, continue until the Totalizer reaches 200 and then divide the figure shown in each window by “2” to get the percentage of that type cell. This process can be extended to 300, 400 etc. for any degree of accuracy desired.

7、 To count the number of cells in each square of a chamber, use a separate key

16

Power Switch

Control panel

24

Reset

for each square. The totalizer will then record the total number of cells counted in all the squares. Divide this total figure by the number of squares to get the average count per square.

8、 DBC-8E functions %, when the Totalizer does not record 100, 200, 300 etc., just press button “%”, the percentage of each unit can be read directly from the window.

9、 With a little practice the instrument can be operated by touch, like a typewriter, and the operator will not have to remove his or her eyes from the microscope. This permits undivided attention to be given to the microscopic field.

Maintenance & Servicing 

Always disconnect form power supply prior to the maintenance & servicing. (DBC-8E)



Failure of operation when plugged in with witch ON indicates the defective switch, disengaged linkage, malfunction of circuit board. (DBC-8E)



Don’t drop and keep this counter as clean and free from dust, water, fire as possible.



Do not place this UNIT in the draft, sunlight or near a equipment that emits electromagnetic conduction emission.

Warranty: One year from the date of purchase.

Condition for storage: Humidity

Temperature

10 – 40ºC

40% – 90%

Manufacturer: Gemmy Industrial Taipei, Taiwan

EU Representative: GEMMY EUROPE 23 rue de Rotterdam

4000 Liege, Belgium Tel: 32-4-2535989 Fax: 32-4-2536824

ISO9001, ISO13485, CE, GMP, FDA

OPERATORS MANUAL Model: DBC-8E DBC-6 / 9 Servicing / Maintenance / Technical

IMPORTANT 1、 Always press the key all the way down. 2、 Always press the key tenderly like to typewriter or computer keyboard. Press the key RANDOMLY or HARSHLY will damage the equipment definitely. 3、 GEMMY will not ensure any responsibility on person who violate the above regulations.

1、 Place the equipment on a sturdy table. Do not drop the equipment. 2、 Always check and make sure that the accumulated total number of each individual pressed key must be equal to the number of Totalizer. If not, it indicates the damage of parts of spring or gear on DBC-6 DBC-9. Please follow the troubleshooting procedure below for DBC-6 / DBC-9: - Remove the release knobs (red color) by turning the knobs outward. - Open the exterior case to find the defective parts. - Replace the new parts subsequently. - Assemble the counter again. - Check the counter and test if it is in good condition. 3、 When the LED digital on DBC-8E becomes twinkled or unclear indicates the problem of electronic parts or disengaged linkage. The corrective action can be done as below: - Remove the exterior case by loosening the screws on side of the case. - Check the assembly and circuit board to find the real cause. - Replace the new parts subsequently. 4、 Diagram of Components and Parts List: See attachment 5、 Circuit diagram: See Attachment 6、 Safety instruction: - Please refer to the specification label located on back of the equipment before operating this counter DBC-8E.

- Be sure the power must conform to your local cords. The wrong adoption of power source will damage the equipment. - Do not place this equipment in the draft, sunlight or near a piece of appliances that emit heat and electromagnetic conduction emission. - Always turn switch to OFF position after use of this counter. - The linkage and components of this equipment do not need lubrication - Do not place this equipment upside down. - Do not immerse this equipment in water. Otherwise disconnect power supply immediately. - Always clean this equipment when needed. - Do not use benzine or paint thinner for cleaning.