PF1350 TECHNICAL MANUAL REV 1 2/06/14
SECTION 4
MAINTENANCE AND TROUBLE SHOOTING
4.1 MAINTENANCE
These power supplies are completely self contained solid state devices and do not
require any routine maintenance. When used within their ratings they will provide many
years of trouble free service. The only foreseen maintenance issue would be
maintaining the ventilation “grills”. Any accumulation of dust and debris should be
removed by brushing or vacuuming.
4.2 TROUBLESHOOTING
THESE UNITS DO NOT CONTAIN USER SERVICABLE PARTS
REFER ALL SERVICING TO QUALIFED PERSONELL ONLY. DO NOT REMOVE COVERS
AND DISCONNECT POWER BEFORE REMOVING FOR SERVICE.
Table 4-1 below should be consulted In the event a problem is encountered during the
operation of this power supply.
OBSERVERED SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
No outputs, meter indicates 000
VOLTS control CCW
Adjust VOLTS control CW
Load does not operate, unit
indicates proper output
Load not connected between
HI and Lo AC output.
Check load is switched on. Check
load is connected properly, See
section 2 and 3.
AC output low or fluctuates,
constant current LED is on or
flashing.
Output overload.
Reduce load.
AC output distorted.
Hi harmonic content to load
current. Non-linear load
applied
Check load current waveform.
AC output drops to zero when load
is switched on. Overload LED is
on.
Output overloaded or shorted
by large in-rush current.
Check load requirement, see
information in section 3 on starting
difficult loads.
No outputs, no displays, input fuse
blows repeatedly.
Internal fault.
Remove unit from use and refer to
qualified service personnel.
Contact factory for service.
WARNING ! REPLACE FUSE WITH SAME TYPE AND RATNG ONLY.
6.3x32mm cartridge type, 16A / 300 VAC min voltage rating.
