Lambda 303 Series, Руководство оператора

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CONTROLS, INDICATORS, CONNECTORS
83-489-009 Rev A
5-5
5.2.3.4 TEMP (Normally OFF)
The TEMP LED Illuminates if the HV tank temperature is outside of its operating limits.
The fixed operating limits have minimum low temperature and a maximum high tem-
perature. When illuminated, the TEMP indicator will turn OFF the high voltage output.
When the internal temperature returns to a normal level, the output may be switched
back on by depressing the HV ON push-button.
The FC-72 coolant has a wide operating temperature range and is controlled and stabi-
lized by the cooling water flowing through the high voltage tank. The maximum allowable
tank temperature is 45°C, and the minimum is 15°C.
This temperature range can be maintained by running normal tap water through the
power supply at a rate of 2 gallons per minute (7.58 L/min). Chilled water should not be
used, it can cause the lower operating temperature limit to be reached, as well as caus-
ing condensation to form which should always be avoided. Condensation in the power
supply could cause damage and the warranty will be void.
5.2.3.5 PURGE PUMP (Normally OFF)
The PURGE PUMP indicator illuminates when the purge pump is operating. The pump
will operate automatically, cycling on and off when necessary. The interval of operation
should be only a few minutes at a time and not more than once in any continuous 24-
hour operating period. The power supply will continue to run normally during the auto-
matic purge operation. The purge pump is designed to remove excess air that may ac-
cumulate in the high voltage tank. The purge pump removes accumulated air to allow
the most efficient cooling and best possible dielectric environment.
5.2.4 INPUT POWER status LEDs (External Faults)
5.2.4.1 FAULT (Normally OFF)
The FAULT LED illuminates when any one of the input power faults in this group occurs.
The FAULT indicator will remain ON (latch ON) after the external fault condition de-
tected has cleared (the indicator goes OFF). The FAULT LED will turn off the power
supply's output and under certain conditions will open the main AC power contactor. The
FAULT indicator may be reset by depressing the HV OFF push-button and depressing
the HV ON push-button.
5.2.4.2 HIGH (Normally OFF)
The HIGH LED illuminates when the external AC input voltage is above the maximum
limit (typically 10% above nominal). Damage can result if the AC input exceeds the rat-
ing and therefore the supply disconnects itself from the line by opening the contactor.
When the HIGH line condition is removed the indicator extinguishes and the power sup-
ply can be reset by operating the HV OFF and HV ON push-buttons.
5.2.4.3 IMBALANCE (Normally OFF)
The IMBALANCE LED illuminates if an internal power imbalance occurs, which could
happen under abnormal power conditions. The fault will automatically reset when the
condition corrects itself.
The AC contactor is opened and the FAULT indicator is illuminated which may be reset
using the push-button after the IMBALANCE LED extinguishes. This does not indicate
an AC line to line imbalance.