Maintenance Schedule; Table 5-1 L-828 Ccr (4-10 Kw/6.6 A) Maintenance - Siemens L-828 Manual

L-828 CCRs LC-Type (4, 7.5, and 10 kW/6.6 A/60 Hz)

2. Maintenance Schedule

Interval
Daily Check all control equipment for proper
operation.
Monthly Check input voltage.
Check and record output current on each
brightness step.
Annually Check relays, wiring and insulation.
Inspect housing for rust spots.
Inspect lightning arrestor connections.
Perform a short-circuit test.
Perform an open-circuit test.
Unscheduled Check load on regulator.
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To keep the L-828 CCRs operating efficiently, follow a preventive
maintenance schedule. Refer to Table 5-1.

Table 5-1 L-828 CCR (4-10 kW/6.6 A) Maintenance

Maintenance Task
96A0104B
Issued 6/02
Action
Check local and remote control (if used)
on each brightness step.
If input voltage is not within -5% to +10%
of the nominal value specified on the
nameplate of the regulator, notify power
company to correct voltage.
Use a true rms-reading instrument.
Adjust current levels if out of tolerance.
Refer to Adjustment Procedures in the
Operation section. Refer to Table 2-10
for the current range for the 3-Step and
5-Step CCRs.
Clean dirty or slightly pitted contactor
contacts. Use a fine file for surface
cleaning. Replace contacts that are
excessively burned or pitted.
Operate the local control switch to check
for proper operation of relays and
contactors.
Make sure input and output connections
are tight and that no damaged wires or
damaged insulation exists.
Clean and touch-up rust spots with paint.
Tighten any loose connections. Replace
charred or burnt wiring or broken
arrestors.
Refer to Short-Circuit Test in this section.
Refer to Open-Circuit Test in this section.
At installation and subsequent load
changes make sure that the output rms
voltage times the output true rms
current does not exceed the rated load
on the name plate of the regulator.
Maintenance
Page 5-2