Changing Fuses; Belt Replacement; Belt Replacement - NEW BRUNSWICK SCIENTIFIC innova 4335 Manual To Operations

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WARNING!
The following section describes basic troubleshooting service
procedures that must be performed by a qualified service
engineer ONLY.
8.3

Changing Fuses

The unit is designed utilizing a circuit breaker that is used as an
are two fuses on the left side of the unit. One is to protect the control circuitry, and the
other is to protect the motor circuit.
The third fuse holder, marked "lamp", is not used on the Innova 4335.
To remove either fuse, insert a small flat-bladed screwdriver and turn counterclockwise
until it disengages and the fuse holder springs free. Check the fuse. If it has failed,
replace the fuse with a like fuse as identified in the Spare Parts List. Spare fuses are
supplied with the unit.
8.4

Belt Replacement

1. Turn off the power and remove the power cord.
2. Remove the lower front cover using a Phillips (+) screwdriver.
MOTOR
Innova 4335 • M1193-1057
Figure 13: Belt Replacement
MOTOR
PULLEY
HEX
NUTS
. There
ON/OFF SWITCH
COUNTERWEIGHTED
PULLEY
3/8" (6.4 mm)
DEFLECTION
(SLIGHT PRESSURE)
User's Guide