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DANGER
Do not operate if the covers are damaged or removed in any way.
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The rectifier contains voltages that may be lethal even after the input
supply has been removed
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The rectifier contains components at High Temperatures that may burn if
touched
3.2
Troubleshooting
Basic operation checks:
• Check power to the rectifier – check that the AC LED is on
• Check and resolve any fault conditions indicated by the status indicators
• Check that the display is showing that it is delivering current
• Disconnect load and battery leads. Connect a load to the battery terminals. Check the voltage across the load is
as expected
• Connect a current meter in series with the load. Adjust the load and check the current delivered by the rectifier
is as expected
Load Checks:
• Connect battery but disconnect the main load to rectifier. Connect a current meter in series with the battery.
Verify the current drawn by the battery from the SPS is as expected. Check that the battery takes the charge.
• Connect the DC load to the SPS with AC off and disconnect the battery. Turn AC on and check that the
current drawn by the load is as expected, and within the capabilities of the SPS and battery.
Fine Adjustment Checks: (see Section 4 on adjustments for instructions)
• Check Boost and Float voltages
• Check Boost to Float current
• Check Temperature Compensation Slope
• Check LVD operation
3.3
Fuses
Although there are fuses inside the rectifier, these are rated such that their failure indicates a fault requiring
qualified service. Do not attempt to replace these fuses.
However for IEC 60950 the fuse ratings are required to be specified. The following fuses are soldered to the PCB:
• FH101 – 125mA 250V ETF Bussmann
Model
SPS 12-20
SPS 24-10
SPS 48-6
4
Adjustments
The SPS is supplied from the factory with all the adjustments set for normal operation. These settings are detailed
below. A competent technician only should adjust these settings.
P.O. Box 1306
Newport Beach
California 92663
FH1, FH2
5A 250V ceramic slow blow
5A 250V ceramic slow blow
5A 250V ceramic slow blow
FH200, FH401
40A 32V Blade
40A 32V Blade
40A 58V Blade
E-Mail: techservice@newmarpower.com
FH201, FH402
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Phone: 714-751-0488
Fax: 714-957-1621
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