Troubleshooting Guide - Yamato RE202-A/212-A Instruction Manual

Symptom
RPM display
remains blank when
the Power key is
pressed.
Evaporation flask
does not rotate when
the Run/Stop key is
ON
Rotation speed is
not stable
Unusual noise
comes from unit
during rotation
Weak or no
decompression
(vacuum)
Jack does not work
properly
Jack does not lock
Rotary joint cannot
be inserted
Rotary joint cannot
be pulled out
Motor box angle
cannot be adjusted
Control panel cannot
rotate
If problem persists, turn OFF (○) pocer immediately, disconnect pocer cable from outlet or
terminal and contact original dealer of purchase for assistance.
Possible causes
● Power supply failure
● AC adapter failure
● Power cable failure
● Controller failure
● External temperature is below
5 °C
● Motor failure
● Bearing failure
● Drive belt failure
● Circuit board failure
● Sample volume is excessive
● Circuit board failure
● Motor failure
● Pulley/belt failure
● Vacuum seal is worn
● Joint nut is loose
● Motor failure
● Bearing failure
● Pulley/belt failure
● Vacuum seal is worn
● Rotary joint is worn
● Rotary joint is not set up
properly
● Nozzle gasket is worn
● Vacuum hose is deteriorated
● Jack handle is deteriorated
● Spring is deteriorated
● Bearing is worn
● Components in lock
mechanism are worn or
deteriorated
● Rotary joint lock mechanism is
worn or deteriorated
● Rotary joint lock mechanism is
worn or deteriorated
● Rotary part is worn
● Rotary part grease dry-out
● Gasket is worn
8. TROUBLESHOOTING
Possible measures
Check supply voltage
[RE202-A]
must be 90-125V AC
[RE212-A]
must be 90-250V AC
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Operating ambient temperature range
is 5 to 35 °C
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Reduce sample Lower speed setting
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Re-tighten joint nut
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Check that rotary joint is installed
properly (P.15)
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Gentry tap rotary joint with plastic head
hammer to remove
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
● Replace relevant parts
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Troubleshooting Guide