9
TO SERVICE PERSONNEL: The PROwatt 250 contains a
replaceable 30 amp (15 amp for PROwatt 250/24V) automotive
blade type fuse, Littelfuse part #275-030 (Littelfuse part #275-
015 for PROwatt 250/24V). These fuses are available at auto-
motive parts suppliers and many electronic components suppli-
ers.
WARNING: Capacitors in the PROwatt 250 retain dangerous
high voltages even after the inverter is disconnected from the
power source.
To replace the fuses, follow these steps:
1) Disconnect the 12/24 volt plug.
2) Wait 60 seconds.
3) Remove the two screws from the end plate where the DC
cord enters the inverter. Turn the end plate to expose the
printed circuit board. The fuses are located at the edge of
the circuit board and may be removed with a pair of needle-
nose pliers. Check the fuses and replace if they have
opened.
4) Reassemble the inverter and test it. If it does not function,
check the fuses again, following the procedure given above.
If the fuses have opened again, the inverter is damaged and
must be returned for service.
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