KEPCO RCW 350W Series - Manual (Page 18)

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RCW350W 120607
4.4 FAN FAILURE
A decrease in fan speed causes the output to shut down and the fans to turn OFF. To restart (reset)
the unit it is necessary to remove the AC input power, wait 40 seconds and then to reconnect the
AC input power.
Another way to reset the power supply is to short circuit the (±) RC terminals and then open the ter-
minals). Fan failure is indicated by a red LED and logic alarm output (at the (±) AL terminals).
5.0 FAN REPLACEMENT
To replace the fan on the back panel of the RCW 350W Power Supply, the following steps are
required:
1. Remove the four Phillips Head screws holding the rear back panel in place (this is the one
covering the front of the fan). Pull off the back panel and disconnect the fan connector
(B601) from its mating connector. Make sure there are no other wires attached to the fan
before removing it from the unit (see Figure 3).
2. When reinstalling the fan in the power suppy make sure that the fan connector is securely
fastened and that the fan cable does not touch the rotating member of the fan assembly.
6.0 FAN MAINTENANCE
Do not use the fan in an environment of high temperature and high humidity, particularly in one that
exceeds the temperature and humidity limits given in the Power Supply Specifications (see Table 1).
Avoid an environment where corrosive gas may be present. If the Power Supply is used in an open
or dirty area, a filter should be installed on the air intake side of the fan to prevent the inflow of dust
particles. If the Power Supply is used in briny air care should be taken to keep the salt from entering
the Power Supply.