Drucker 642E Manuel de l'opérateur - Page 4

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well as premature failure of the centrifuge. Choose an area which will allow

unencumbered air flow.

The centrifuge is designed to secure to the operating surface by four suction

feet. No adjustment is necessary for leveling the centrifuge, however, the

surface should be flat and level.

Be sure the outlet is always within reach as the line cord is the means of

emergency disconnection!

Initial Setup Procedure:

If any problems are found during the initial setup procedure, refer to the

troubleshooting section on page 10. For further assistance, contact

Drucker Diagnostics at

814-342-6205 or

Plug the centrifuge in to an approved electrical outlet. For electrical safety, the unit

must always be properly grounded.

For safety purposes, the locking system is always activated. To deactivate the

system, (in order to insert or retrieve samples), press the 'OPEN / STOP' button on

the control panel. The 'UNLOCKED' indicator light should illuminate. If it does not,

refer to page 10 on troubleshooting. The lid will be unlocked for 15 seconds after

pushing the 'OPEN / STOP' button.

Turn the latch counterclockwise and open the lid.

Spin the rotor by hand; check for free and level rotation. If the rotor does not spin

freely, refer to page 10 on troubleshooting.

Place the six test tube holders inside the rotor (as shown to the right), and verify

that they are seated properly.

Close the lid. Rotate the lid knob clockwise to its complete

stop position.The 'LATCHED' indicator light should be

illuminated. If it is not, make sure that the lid is latched

properly. The centrifuge will not run unless the lid is latched

and that the 'LATCHED' light is on.

Turn the centrifuge on by pushing the 'START' button.

The 'RUNNING' indicator light will illuminate.

The test tube holders will slide up into the horizontal position and the unit will

accelerate to full speed.

10. Listen to the sound of the centrifuge. A smooth whirring sound should be heard. If

there are any loud or unusual sounds, stop the centrifuge by pushing the 'OPEN /

STOP' button immediately and refer to page 10 on troubleshooting.

11. While the machine is running, try to turn the latch counterclockwise. Power may

be cut to the motor but you should be unable to fully turn the latch. If it is possible

to turn the latch and open the lid while the unit is running, contact Drucker

Diagnostics for assistance. Close and latch the lid.

12. Push the 'OPEN / STOP' button. The 'RUNNING' indicator light should

go out and the motor should slow to a stop.

13. The lid should remain locked until the rotor has nearly stopped. If

the machine unlocks prematurely, contact Drucker Diagnostics for

assistance.

Once the rotor has stopped, the interlock system will become

disengaged for sixty (60) seconds. The 'UNLOCKED' indicator light will

illuminate during this time.

14. To gain entry into the centrifuge after this period has ended, simply press

the 'OPEN / STOP' button. The lid will unlock for fifteen (15) additional

seconds.

After the centrifuge has passed this procedure it is ready for operation.

814-692-7661.

Page 4

glass fragments left in the tube holder after a tube breakage may adhere to

the next test tube inserted in that holder. When this tube is handled, these

fragments may puncture protective gloves and lacerate the operator's

fingers or hand. Remaining fragments may provide stress points on

subsequent tubes and result in additional breakage. If a tube breakage

occurs, carefully remove the tube holder. Properly dispose of the sample

and tube fragments and thoroughly clean both the inside and outside of the

tube holder. Insert a new tube cushion (if necessary) and replace the tube

holder in the rotor.

Motor and Electrical Maintenance: The Model 642E uses a brushless

permanent split capacitor AC motor. It should not need servicing for the life

of the centrifuge. The electrical components are selected for high reliability

and should not need service.

Tube Holder Replacement: It is recommended that the tube holders be

replaced after 24 months of use. Inspect tube holders regularly for cracks. If

cracks are discovered, replace immediately.

Remove Accessories Before Moving: All tube holders, samples, and caps

must be removed from the rotor chamber before transporting or storing the

centrifuge to prevent damage and injury.

Cleaning and Disinfection:

To prolong the life of the centrifuge cleaning and disinfection is recommended every

six months, or whenever there is a spillage or tube breakage. Contaminants must

be removed immediately, or corrosion and premature degradation of components

can occur.

Unplug the centrifuge before cleaning.

Apply cleaning solutions with a towel or cloth. Do not submerge the centrifuge

in water or other cleaning solutions as this will cause damage and void the

warranty.

ONLY isopropyl alcohol, soap and water, or a 10% (5500 PPM) bleach

solution should be used for cleaning and disinfection of the centrifuge and

accessories.

All surfaces must be dried immediately after cleaning and disinfecting.

TBQ Germicidal products shall not be used, as they will cause damage to the

centrifuge and void the warranty.

The use of fully/partially halogenated hydrocarbons, ketones, esters, ethers,

benzyls, ethyl benzenes, and all other chemicals not prescribed by the

manufacturer shall not be used as they may cause damage to the rotor

chamber, rotor, tube holders, accessories and centrifuge exterior and void the

warranty.

It may be necessary to remove the rotor and clean the rotor chamber. Follow the

instructions on page 8 to remove and reinstall the rotor.

(cont.)

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