TEXIO PU100-7.5, Instruction Manual

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9. MAINTENANCE
9.1. INTRODUCTION
This chapter provides information about maintenance, calibration and troubleshooting.
9.2. UNITS UNDER WARRANTY
Units requiring repair during the warranty period should be returned to a TEXIO authorized service
facility. Refer to the addresses listing on the back cover of this manual. Unauthorized repairs
performed by other than the authorized service facilities may void the warranty. Be careful not to
tear a seal.
9.3. PERIODIC MAINTENANCE
No routine maintenance of the power supply is required except for periodic cleaning. To clean,
disconnect the unit from the AC supply and allow 30sec. for discharging internal voltage. The front
panel and the metal surfaces should be cleaned using mild solution of detergent and water. The
solution should be applied onto a soft cloth, and not directly to the surface of the unit. Do not use
aromatic hydrocarbons or chlorinated solvents for cleaning. Use low pressure compressed air to
blow dust from the unit.
9.4. FAN EXCHANGE
(1) Please recommend to set up a maintenance period for fan exchange. However, please do not
exchange in yourself.
(2) A fan life should keep in mind that it changes lifetime sharply by the difference in use
environment (temperature, humidity, dust) etc.
(3) In the fan exchange in a maintenance, it becomes onerous. Please contact your dealer or our
distributor.
9.5. PARTS REPLACEMENT AND REPAIRS
As repairs are made only by the manufacturer or by authorized service facilities, no parts
replacement information is provided in the manual. In case of failure, unusual or erratic operation of
the unit, contact a TEXIO agent nearest you. Please refer to the TEXIO agent addresses listing on
the back cover of this user manual.
9.6. TROUBLESHOOTING
If the power supply appears to operating improperly, use the troubleshooting guide to determine
whether the power supply, load or external control circuits are the cause.
Configure the power supply for basic front panel operation and perform the tests of section 3.8 to
determine if the problem is with the supply.
Table 9-1 provides the basic checks that can be performed to diagnose problems, and references
to sections of this manual for further information.
Table 9-1: Troubleshooting guide
SYMPTOM CHECK ACTION REF.
Is the AC power cord
defective? Check continuity, replace if
necessary. 3.7
No output. All displays and
indicators are blank.
Is the AC input voltage
within range? Check input AC voltage.
Connect to appropriate
voltage source. 3.6
3.7
Output is present momentarily
but shuts off quickly.
The display indicates “AC”. Does the AC source voltage
sag when load is applied?
Check input AC voltage.
Connect to appropriate
voltage source. 3.6