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CHAPTER 3. SERVICING
SECTION 1. MAINTENANCE
1. General
To be certain the DC power supply set is ready for operation at all times, it must be inspected and main-
tained systematically so that defects may be discovered and corrected before they result in serious dam-
age or failure of the equipment. Defects discovered during operation of the unit should be noted for
correction to be made as soon as operation has ceased.
WARNING: HIGH VOLTAGE - ELECTRIC SHOCK CAN KILL! BE CERTAIN
THE INPUT POWER SOURCE IS TURNED OFF BEFORE PROCEEDING WITH
ANY INSPECTION OR MAINTENANCE OPERATION WHICH COULD BRING
PERSONNEL IN CONTACT WITH HIGH VOLTAGE OR REVOLVING EQUIP-
MENT. STOP OPERATION IMMEDIATELY IF A POSSIBLE DANGEROUS
FAULT IS DISCOVERED. THE FRONT PANEL INPUT CONTACTOR SWITCH
DOES NOT REMOVE INPUT POWER FROM ALL COMPONENTS. BE SURE
CAPACITORS ARE DISCHARGED BEFORE YOU TOUCH.
The power supply is designed to be as maintenance free as possible, therefore, there are few inspection
and maintenance requirements.
2. Inspection
A periodic inspection schedule should be established and maintained. A suggested inspection/check
schedule is provided in Section 3-2, Figure 1; however, it may be changed as required to meet varying op-
erating conditions and environment. See Section 2, Inspection/Check for inspection and check proce-
dures to be used in conjunction with Section 3-2, Figure 1 schedule.
3. Lubrication
The subject of lubrication is mentioned here mostly to inform maintenance personnel that it has not been
overlooked. Except for sleeve bearings in the fan motor, no lubrication is required. Refer to Section 1-2,
Para. F for fan motor lubrication instructions.
NOTE: The fan motor is designed for 10,000 hours between bearing lubrications. Relubrication for even
longer life at 10,000 hours requires fan motor removal and dissassembly, possible but not normally
recommended.
A good silicone spray lubricant is recommended for hinges if exposure to weather should make them diffi-
cult to operate.
April 10/89 Revised
OM-2010
3-1
Page 1
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