Drucker Diagnostics Horizon 6 FA, Horizon 6, Horizon 6 Flex, Horizon 6 Flex FA Service Manual

DRUCKER DIAGNOSTICS
HORIZON 6 SERVICE MANUAL

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200 Shadylane Drive

Philipsburg, PA 16866

www.druckerdiagnostics.com

Service Manual

Horizon 6, 6 FA

Horizon 6 Flex, 6 Flex FA

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Contents

1. PREFACE 3

2. INTENDED USE 3

3. GENERAL DESCRIPTION OF MAJOR COMPONENTS 3

4. WARRANTY INFORMATION 3

5. SPECIFICATIONS 4

6. TROUBLESHOOTING 4

7. SERVICE INSTRUCTIONS 5

8. WIRING DIAGRAM 9

9. SPARE PARTS LIST 10

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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 Horizon 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. INTENDED USE

2.1. This centrifuge is a laboratory product designed to separate components by generation

of relative centrifugal force. It separates human and animal samples – such as blood,
urine and other body fluids -- collected in appropriate specimen receptacles, either alone
or with reagents or other additives. As a general-purpose laboratory centrifuge, it is
designed to also run other containers filled with chemicals (non-flammable, non­explosive, non-volatile, and non-highly reactive only), environmental samples, and other
non-human body samples. This centrifuge should be operated by trained personnel only.
This centrifuge is an IVD accessory, and therefore subject to the former EU IVD Directive
98/79/EC and the current EU IVD Regulation 2017/746. Any use other than those
intended by the Manufacturer is explicitly prohibited. Maximum sample density is 1.15
grams/mL.

3. GENERAL DESCRIPTION OF MAJOR COMPONENTS

3.1. Motor: Permanent Split Capacitor AC Motor

3.2. Control Board: The control board is the microcontroller-based control center of the

centrifuge. All control signals are generated in the control board.

3.3. 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.

3.4. 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.

4. WARRANTY INFORMATION

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

parts for two years.

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5. SPECIFICATIONS

Horizontal rotor

Fixed-angle rotor

Maximum Speed

3800 RPM

3900 RPM

Maximum RCF

2000 xg

1850 xg

Maximum Capacity

6 Tubes (17 x 100mm)

6 Tubes (17 x 125mm)

Dimensions (in)

9.0 (H) x 12.0 (W) x 14 (L)

Environmental Operating Range

16-32 deg C

Typical Noise Level (At Maximum Speed)

< 64 dB A

Electrical Ratings

115VAC (+/- 10V)

6. TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

The lid does not open.

No power

• Check line cord

• Check circuit breaker on underside of centrifuge.

• Check wall outlet

Lid knob is not completely closed

Rotate the lid knob fully clockwise before pressing
the ‘OPEN’ button

Lid lock is active (Unlock timed out)

Press the ‘OPEN’ button to de-activate the lid lock

Lid tray is unplugged from control board or
defective

Check wiring
Control board is damaged

Replace Control board

To gain access to the rotor - Remove the
‘OPEN/CLOSE’ sticker 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.

Debris lodged within the rotor or tube
carriers

Carefully inspect all rotor pockets, tube holders and
crevasses for debris, and clean thoroughly.

Centrifuge housing is loose

Tighten or replace screws

Missing/damaged feet

Replace feet

Motor failure

Replace motor

Rotor damaged

Replace rotor

PROBLEM

POSSIBLE CAUSE

SOLUTION

Rotor does not spin

No Power

• Check line cord

• Check circuit breakers on underside of centrifuge.

• Check wall outlet

Lid not properly latched

Press down firmly on lid and rotate lid knob clockwise
until the ‘LATCHED’ light illuminates.

Internal connection failure

Check wiring

Control board failure

Replace control board

Motor Failure

Replace motor

PROBLEM

POSSIBLE CAUSE

SOLUTION

Clicking noise during braking

Rotor is loose

Tighten rotor nut

PROBLEM

POSSIBLE CAUSE

SOLUTION

Whistling noise while running
Debris in air intake / exhaust ports

Remove power before clearing debris.

Damaged gasket

Requires service

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PROBLEM

POSSIBLE CAUSE

SOLUTION

Cycle ends prematurely:
Centrifuge reports the error in a repeating BUZZ / BEEP sequence

ROTOR BALANCE ERROR:
4 error buzzes + 2 repeating beeps
All LEDs blinking in unison with beeps

Rotor improperly loaded

Correct the imbalance

OVERCURRENT ERROR:
4 error buzzes + 3 repeating beeps

Control board, motor, or wiring
fault

Check wiring

MOTOR SPEED ERROR:
4 error buzzes + 4 repeating beeps

Rotor motion not detected

• Check sensor in lid locking tray

assembly

• Check reflective tape on rotor

Abnormal rotor acceleration
detected

Check for missing tube holders

Motor fails to reach the set
speed

• Check for missing tube holders

• Check the lid and guard bowl

gaskets. Voids in the rotor
chamber gaskets change the
airflow, resulting in increased
stress on the motor drive

7. SERVICE INSTRUCTIONS

7.1. 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.

• Use of any chemicals not prescribed by the manufacturer may cause damage to the

rotor and tube carriers and shall not be used.

7.2. Removing the Rotor

• Use a 1/2” nut driver 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 hub spines with the rotor hub.

• Tighten the rotor nut by hand with a ½” nut driver until snug. A good rule of thumb

is one full thread showing above the nut is a good indicator of proper installation.

7.3. 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.

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7.4. Rotor Nut

• If the rotor Nut needs to be tightened, use a ½” nut driver and tighten it by hand

until snug.

• Rule of thumb: One full thread showing above the nut is a good indicator of proper

installation.

7.5. 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.

7.6. Removing the Cabinet (Upper Housing)

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

• Begin by unplugging the centrifuge and waiting 10 minutes for internal voltages to

dissipate.

• Use a #2 Phillips screwdriver to remove the cabinet screws (six on the bottom,

three in the rear)

• The centrifuge control panel is attached to the base internally with cable

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

• Lift the cabinet straight up and off the base, setting it down on its front side.

• Gently remove the combination power supply / motor harness from the control

board.

7.7. Replacing the Lid Lock Assembly

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

• Gently remove the lid lock wire harness’ from the control board.

• The lid lock assembly is held in place with four screws.

• Two #8-16 screws on the inside and two #8-32 screws on the outside (covered by

the open/close label).

• Remove the Open/Close label to access the two screws underneath.

• To install, line up the holes on the lid tray assembly to the screw holes on the

cabinet and install the four screws.

• Complete the installation by plugging the wire harness into the control board

header ‘J2’.

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7.8. Replacing the Control Board

• The control board is accessible once the cabinet has been removed. Make certain

that all wire harnesses have been disconnected.

• The control board has capacitors that will remain charged for a period after the

centrifuge is unplugged. Make certain to use standard precautions for handling
potentially charged capacitors when working with the control board.

• The control board is held in place with six screws. Use a #2 Philips driver to remove

the screws. The board is now free to remove.

• To install the control board, make certain that the six posts line up with the holes

in the control board and use a # 2 driver to install the screws.

7.9. Removing the motor

• Remove the cabinet assembly as previously described.

• Flip the base assembly up‐side down and remove the three screws that are

securing the exhaust cover and set aside.

• Remove the six screws that hold the guard bowl

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

• Disconnect the motor wire connectors.

• Remove the ground connection with a nut driver.

• Flip the guard bowl.

• The motor is held in place with four #8 Nylok nuts. Remove them with an 11/32”

nut driver.

• Slide the motor out of the guard bowl’s motor well.

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7.10. Replacing the motor

• Flip the guard bowl upside down and locate the notch on the bottom.

• Install the motor into the guard bowl with the wires reaching in the same direction

as the notch.

• Holding the motor in place, flip the bowl on its side and drive 4 #8 Nylok nuts onto

the motor studs with an 11/32” nut driver.

• Turn the guard bowl assembly upside down and position the bowl so the notch is in

an 8 o’clock position.

• Place the base assembly onto the guard bowl – make sure the orientation of the

motor wires is the same as the image below.

• Make certain that the motor wires are in the notch, and that no wires are pinched

between the guard bowl and base.

• Fasten the guard bowl to the base with the six screws, connect the brown wire to

the capacitor, ground to the ground stud and the remaining wires black-to-black,
white-to-white.

7.11. Power Connections and Final Assembly

• Make certain that the lower assembly is unplugged from the mains supply.

• Connect all wiring harnesses to the control board as shown in the wiring diagram in

section 8.

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

between the two.

• Complete the assembly by replacing the six screws in the bottom and three in the

rear.

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8. WIRING DIAGRAM

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9. SPARE PARTS LIST