Metalfab Martin Motomagnetic Electric Vibrator - Manual (Page 17)

Martin Engineering M3286-8/01 13 MOTOMAGNETIC ® Electric Vibrators
Installing
overload, short-
circuit, and
ground-fault
protection
CAUTION
!
Install overload protection for vibrator. If vibrator is not
protected from overload, vibrator can be destroyed and
warranty will be void. Determine size of overload protection
according to NEC Article 430, and have it installed by a
qualified electrician only.
1. Determine overload, short-circuit, and ground-fault protection according
to NEC Article 430.
NOTE
All single-phase vibrators are supplied with overload
protection.
2. Have qualified electrician install overload, short-circuit, and ground-fault
protection.
3. If overload trips during operation, fix problem before resetting.
CAUTION
!
For equipment using two vibrators, the two motors must be
electrically interlocked. If using a single contactor, each motor
must be provided with separate overload protection. The
motor control circuit must be arranged so that if one motor
becomes de-energized, the other motor will automatically and
immediately become de-energized. Failure to properly
interlock motors could result in severe damage to equipment
if one vibrator fails.
4. If using two vibrators, interlock the two vibrator motors and install
separate overload protection for each.
Installation