DRUCKER DIAGNOSTICS
HORIZON 24 SERVICE MANUAL
SM016
REV A
5
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 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 3 REPEATING BEEPS
Motor or PCB failure
Service Required
NO RPM ERROR
6 ERROR 4 REPEATING BEEPS
Sensor not connected to PCB
Check connections
Sensor failure
Replace motor
Locked rotor
Service Required
EEPROM ERROR
2 ERROR 6 REPEATING BEEPS
PCB failure
Replace PCB
ACCELEROMETER ERROR
2 ERROR 7 REPEATING BEEPS
PCB failure
Replace PCB
MOTOR DRIVE ERROR
2 ERROR 9 REPEATING BEEPS
PCB failure
Replace PCB
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.
•
The 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 1/8” 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.
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.
7.4.
Rotor Screw
•
If the rotor screw needs to be tightened, use a 1/8” hex key and tighten to
3.5 Nm.
7.5.
Speed Calibration
