Drucker Diagnostics DASH Apex 24 Bedienungsanleitung

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

SM019

REV B

200 Shadylane Drive

Philipsburg, PA 16866

www.druckerdiagnostics.com

Service Manual

DASH Apex 24 Centrifuge

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

SM019

REV B

Contents

1. PREFACE 3

2. GENERAL DESCRIPTION OF MAJOR COMPONENTS 3

3. WARRANTY INFORMATION 3

4. SPECIFICATIONS 3

5. TROUBLESHOOTING 4

6. SERVICE INSTRUCTIONS 5

7. WIRING DIAGRAM 11

8. SPARE PARTS LIST 12

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

SM019

REV B

1. PREFACE

1.1. The purpose of this manual is to provide the service technician with information for

troubleshooting, testing, and repair of laboratory centrifuge model DASH Apex 24. Only

qualified technically trained personnel should attempt any of the servicing described in

this document. Failure to follow the procedures in this document may result in personal

injury or instrument damage. Drucker Diagnostics will not be held liable for any injury or

damage because of improper servicing.

1.2. Information contained within this manual is subject to change without notice.

2. GENERAL DESCRIPTION OF MAJOR COMPONENTS

2.1. Motor: Brushless DC Motor

2.2. Printed Circuit Board: The PCB is the microcontroller-based control center of the

centrifuge. All control signals are generated in the PCB.

2.3. Lid Locking Tray Assembly: The lid tray assembly contains a solenoid and limit switch that

are used to determine the state of the lid (Open or Closed) and to keep the lid locked

during centrifugation cycles.

2.4. Rotor: The centrifuge rotor is the main component that spins in the centrifuge. The rotor

is loaded with tube holders, and the samples are placed into the tube holders for

processing.

3. WARRANTY INFORMATION

3.1. Drucker Diagnostics warrants its centrifuges to be free from defects in workmanship and

parts for two years.

4. SPECIFICATIONS

Maximum Speed 4300 RPM

Maximum RCF 3150

Dimensions (in) 9.0 (H) x 15 (W) x 17 (L)

Environmental Operating Range 16-32 deg C

Typical Noise Level (At Maximum Speed) < 64 dB A

Electrical Rating 95-253 VAC

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5. TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

The lid does not open.

No Power

Check removable line cord or wall outlet.

Lid knob is ajar

Rotate the lid knob fully clockwise before pressing the

‘UNLOCK’ button

Lid lock is active (Unlock timed out)

Press the ‘UNLOCK’ button to de-activate the lid

Lid tray is unplugged from PCB or

defective

Requires service

PCB is damaged

Requires service

To gain access to the rotor - Remove the label directly in

front of the lid knob and slide the lid latch lever toward

the front of the centrifuge. This will unlock the lid.

PROBLEM

POSSIBLE CAUSE

SOLUTION

Excessive vibration

Rotor improperly loaded

Load equally filled tubes symmetrically in the rotor. All

carriers and/or tube holders must be present in the

rotor, whether loaded, or empty.

Debris lodged within the rotor or

tube carriers

Carefully inspect all rotor pockets, tube holders and

crevasses for debris.

Centrifuge housing is loose

Requires service

Missing/damaged feet

Requires service

Motor failure

Requires service

Rotor damaged

Replacement required

PROBLEM

POSSIBLE CAUSE

SOLUTION

Rotor does not spin

No Power

Check removable line cord

No Power

Check circuit breaker on underside of centrifuge.

No Power

Check wall outlet

Lid not properly latched

Press down firmly on lid and rotate lid knob fully

clockwise.

Internal connection failure

Requires service

PCB failure

Requires service

Motor Failure

Requires service

PROBLEM

POSSIBLE CAUSE

SOLUTION

Clicking noise during braking

Rotor is loose

Tighten rotor screw per section 7-2

PROBLEM

POSSIBLE CAUSE

SOLUTION

Whistling noise while running

Debris in air intake / exhaust ports

Remove power before clearing debris.

Gasket failure

Requires service

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PROBLEM

POSSIBLE CAUSE

SOLUTION

Cycle ends prematurely. The centrifuge reports

the error in a repeating BUZZ / BEEP sequence

BALANCE ERROR

1 ERROR BUZZ + 2 REPEATING BEEPS

Rotor improperly loaded

Load equally filled tubes symmetrically in the rotor.

Debris lodged within the rotor or

tube carriers

Carefully inspect all rotor pockets, tube holders and

crevasses for debris.

Rotor damaged

Replacement required

LOW SPEED ERROR

2 ERROR BUZZES + 2 REPEATING BEEPS

Rotor Speed is under set speed for

too long.

Check the lid and guard bowl gaskets. Voids in the rotor

chamber gaskets change the airflow, resulting in

increased stress on the motor drive

OVERCURRENT ERROR

3 ERROR BUZZES + 3 REPEATING BEEPS

Motor or PCB failure Service Required

NO RPM ERROR

6 ERROR BUZZES + 4 REPEATING BEEPS

Sensor not connected to PCB Check connections

Sensor failure

Replace motor

Locked rotor

Service Required

EEPROM ERROR

2 ERROR BUZZES + 6 REPEATING BEEPS

PCB failure Replace PCB

ACCELEROMETER ERROR

2 ERROR BUZZES + 7 REPEATING BEEPS

PCB failure Replace PCB

MOTOR DRIVE ERROR

2 ERROR BUZZES + 9 REPEATING BEEPS

PCB failure Replace PCB

6. SERVICE INSTRUCTIONS

6.1. Cleaning

•The cabinet, rotor and accessories can be cleaned using soap and water, isopropyl

alcohol, or a 10% (5500 PPM) bleach solution

•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.

•Under no circumstances should any of the following be used: TBQ Germicidal

Products, Fully/Partially Halogenated Hydrocarbons, Ketones or Esters.

•The use of any chemicals not prescribed by the manufacturer may cause damage

to the rotor and tube carriers and shall not be used.

6.2. Removing the Rotor

•Use a 1/8” hex key to loosen the center rotor screw (turn counter-clockwise).

•Lift the rotor straight up and out of the rotor chamber.

•To install the rotor, reverse steps A and B above. Take care to align the shaft cross-

pin with the rotor hub. Tighten the rotor screw to 3.5 Nm.

6.3. Maintaining the Rotor

•Keep the rotor clean, any corrosive materials must not be allowed contact with the

rotor and should be cleaned immediately.

•The rotor should be checked periodically for signs of wear.

•Remove the rotor from service if any of the following are found: cracks, deep

scratches, corrosion or discoloring.

6.4. Rotor Screw

•If the rotor screw needs to be tightened, use a 1/8” hex key and tighten to 3.5 Nm.

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6.5. Speed Calibration

•Check the centrifuge speed periodically, every two years is recommended.

•Important: When verifying rotor speed, make certain that all carriers are installed

in the rotor.

•No calibration adjustment of speed can be made, only a verification of rotor speed.

6.6. Removing the Cabinet (Upper Housing)

•There are eight screws that fasten the centrifuge cabinet to the base.

•Begin by unplugging the centrifuge.

•Use a 3/32 hex key to remove the cabinet screws (three on left and right sides, two

in the rear)

•The cabinet control panel is attached to the base internally with cable harnesses.

Be careful not to stress the cables when removing the cabinet.

•Stand directly in front of the centrifuge and lift the cabinet straight up and off the

base, setting it down on its right side.

•Gently remove the power supply and motor harnesses from the PCB.

6.7. Replacing the Lid Lock Assembly

•The lid tray assembly is accessible once the cabinet has been removed.

•Gently remove the lid tray wire harness from the PCB.

•The lid tray assembly is held in place with two #6 Nylok nuts. Use a 5/16” nut driver

to remove the nuts. The tray will slide off the threaded studs.

•To install the lid tray, slide it onto the studs, and secure it with two #6 Nylok nuts,

hand tight.

•Complete the installation by gently plugging the wire harness into the PCB header

‘J2’. The header and connector are keyed for proper orientation.

6.8. Replacing the PCB

•The PCB is accessible once the cabinet has been removed. Make certain that all

wire harnesses have been disconnected. Use standard precautions for handling

static sensitive components.

•The PCB is held in place with six #6 Nylok nuts and plastic insulator washers. Use a

5/16” nut driver to remove the nuts. The PCB and washers are now free to slide off

the threaded studs.

•Beneath the PCB are six plastic standoffs. If they are crushed, replace them before

reassembly.

•To install the PCB, make certain that six plastic standoffs are present on the control

panel studs.

•Slide the board onto the studs

•Install six plastic washers onto the studs securing the circuit card.

•The six nuts should be tightened only until the buttons on the control panel click

when pressed – do not over tighten. Each nut sets the height of a separate control

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REV B

panel button. Too low, and they cannot be actuated, too high and they jam against

the front panel label and are always in the ‘ON’ state. Tighten each nut a ¼ turn in

succession, trying each corresponding button as you go.

•Once each control panel button clicks when pressed, installation is complete.

6.9. Removing the motor

•Remove the cabinet assembly by following 7.8

•Cut and remove all wire harness zip ties.

•Flip the base assembly up-side down and remove the three exhaust air channel

screws with a #2 Phillips driver.

•Set the exhaust cover aside

•The guard bowl is held in place with six #8 screws. Remove them with a #2 Phillips

driver.

•Lift the base assembly off the guard bowl and set it aside.

•The motor assembly is held in place with 3 #8 Nylok nuts and fender washers.

Remove the nuts with an 11/32” nut driver.

•Remove the three fender washers.

•Lift the motor assembly up and off the studs.

•The motor is secured to the mounting plate with 4 #8 screws. Use a # 2 Philips

driver to remove the screws.

6.10. Replacing the motor

Fig 1 Fig 2

•Place the motor onto the motor mount plate and thread the motor wires into the

cutout as shown (fig 1).

•Attach the motor to the motor mount plate with four #8 SCREWS and torque to 18

in-lbs (Fig 2).

•Secure the motor wire harness with a zip tie as shown. Snip the tag end of the zip

tie flush when complete.

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

SM019

REV B

Fig 3 Fig 4 Fig 5

•Insert the Elastomer bushings into the motor mount plate as shown (fig 4).

•Push the grommets onto the bushings as shown (fig 5)

Fig 6 Fig 7 Fig 8

•Place one Aluminum spacer 30-000112 onto each stud as shown (fig 6).

•Install the motor mount assembly onto the guard bowl studs so that the motor

wire tiedown is positioned opposite of the guard bowl splice (fig 7).

•Install one fender washer onto each stud (fig 8).

•Finish the assembly with one Nylok nut on each stud, and tighten to 13 in-lbs

Tiedown

SPLICE

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

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REV B

Fig 9 Fig 10

•Place the base assembly onto the guard bowl assembly 02-003-0-0052 with the

guard bowl splice positioned as shown (fig 9).

•Feed the motor wire harness into the base passthrough so that the wire harness is

not pinched between the base and the guard bowl (fig 10).

Fig 11 Fig 12

•Secure the base with six #8 screws torqued to 10 in-lbs. (fig 11).

•Install the exhaust cover and secure with three #8 screws torqued to 10 in-lbs. (fig

12).

SPLICE

THIS SIDE

DRUCKER DIAGNOSTICS

DASH Apex 24 SERVICE MANUAL

SM019

REV B

6.11. Power Connections and Final Assembly

•Plug the power harness into J17

•Plug the motor harness into J10 (Hall Sensors) and J14 (Motor power)

•Plug the lid lock harness into J2

•Plug the cycle counter harness into J3

•Carefully place the cabinet onto the base taking care not to pinch any wires

between the two.

•Complete the assembly by replacing the eight #8 screws, with a 3/32 hex key.

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