Parr Instrument 4848B - Manual (Page 10)

4848B Reactor Controller
P a r r I n s t r u m e n t C o m p a n y 8
A load fuse is mounted on the back panel on 115V
systems. This fast-acting, 250VAC, 20 amp fuse is in-
tended to protect the controller and prevent electric
shock hazard from fault from occurring.
Two load fuses are mounted on the back panel
on 230V systems. These are fast-acting, 20 Amps,
250VAC and are intended to protect the controller
and to prevent electric shock hazard from fault from
occurring.
Caution!
Unplug unit before servicing. For continued
protection against possible hazard, replace
fuses with same type and rating of fuse.
Back Side
4848B Reactor Controller
Protective Fuses and Relays
An instrument fuse is mounted on the back panel.
This is a Fast-acting, 250VAC, 1.0 amp fuse, intended
to protect the temperature control module and any
installed display modules.
The motor reset/motor fuse provides overload
protection for 0-90VDC motors. This is a re-settable
breaker designed to protect the motor if it becomes
overloaded. The breaker will have a rating selected
to match the motor on the apparatus.
A lighted fuse holder provides protection for 0-180
VDC motors. A light will come on if the motor be-
comes overloaded and the fuse burns out. The fuse
rating will be selected to match the motor on the
apparatus.