Instruction Manual

Larson Electronics, LLC
Phone: [phone]
Fax: [phone]
www.larsonelectronics.com
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7. Magnetic switch
chatters or does not
close.
A. Chattering.
1. You may have a M3 (mfg leg) wired
to your magnetic coil. M3 (mfg leg)
must be used to power the motor only.
8. Excessive blowing of
fuses, circuit breakers,
or heaters.
A. Instant blowing of fuses or
circuit breakers.
B. Nuisance tripping of fuses,
circuit breakers, or heaters.
1. You have a short circuit. Check
circuit for broken or loose wires.
Check motor for shorts. Check all
connections.
1. You have a bad connection. Check
that all connections are clean and
tight.
2. You may have used insufficient wire
size for the installation.
3. You may have used insufficient fuse
sizing for the installation. You are not
running on true three phase; the
starting & running amperage is often
higher than it would normally be. To
solve the problem, go to one step
higher fuse or breaker or adjust the
heater to compensate.
4. Your motor load may require a
higher motor efficiency than the
converter is allowing.
Solutions Are:
a. Upgrade your installation to a
Rotary Phase Converter.
b. Install an idler motor into the circuit.
If at any time you experience a popping sound, see smoke or liquid coming from within the
converter, you can assume that the converter has internal damage and will have to be returned
to the factory for repair.