Gemmy PLC-01 - Centrifuge Troubleshooting Guide

Troubleshooting:
Problem
Possible cause
Corrective action
Vibration
- Rotor imbalance
- Defective rubber support
- Place tubes symmetrically
- Replace new one
Erratic speed
- Worn out carbon brushes
- Defective triac or VR
- Replace new ones
- Replace parts
Failure of
operation
- Worn out brushes
- Defective motor or PCB
- Blowout fuse
- Disengaged linkage
- Replace carbon brushes
- Replace parts
- Replace fuse
- Connect linkage
Burnout motor &
PCB
- Wrong power supply
- Overload current
Use the right power
source
Change of MAX
and MIN rpm
- Loose SVR of PCB
- Calibrate speed. See Page
7 for correction
Timer can’t work
- Counting failure
- Turn timer to 60min, then
turn to 0 before set time.
Tilted rotor
- Loose fastener attached to
motor
- Broken rubber support
- Fix and glue the fastener
- Replace new one
Failure of motor
spinning
- Worn out carbon brushes
- Malfunction of PCB
- Burnout motor
- Disengaged wiring
- Replace carbon brushes
- Replace PCB
- Replace motor
- Connect wirings
NOTE
：
 Troubleshooting must be done by the qualified personnel only.
 The drive motor and linkage assembly do not require lubrication
 Immerse the centrifuge in water is strictly prohibited
 Disassembly must be performed under the supervision of licensed
engineers
 Tip the equipment up or place upside down or vibrate the
equipment may damage the equipment
 Take care of the electrical shock for troubleshooting.
 Always refer troubleshooting to your local distributors.
 Unstable voltage and current can shorten the lifespan of this
centrifuge. We recommend you use the voltage stabilizer.
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