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118157-001 Rev C
Cooler/Chiller Connections:
The cooler may or may not include a water flow indicator. Typically, water flow may be rated in liters
per minute or gallons per minute depending on the tube size and specifications. It is important to check
the water flow with a meter to ensure the tube has adequate cooling. Digital or traditional ball type
meters may be permanently installed for verification. An internal flow and over temperature switch is
provided with a dry set of contacts that can be integrated with the XRV Generator that will turn off the
high voltage if the water flow is insufficient or temperature is too high.
The bipolar tube uses oil since the anode is at high voltage potential and must be isolated from ground.
Oil is circulated by a pump and cooled using a refrigerant compressor. Oil flow rates and chiller sizing is
dictated by the power dissipated by the tube. The manufacturer of the tube generally recommends flow
rates and compressor size. If the I/O Box interface is used, a circuit breaker is included for the chiller. If
the user chooses not to include the I/O Box assembly, the circuit breaker needs to be sized to handle the
in-rush current when the compressor turns on.
Generally a 20 Amp. breaker for motors will
suffice. Consult Spellman High Voltage
when selecting a breaker size for the chiller
used. Leave enough space surrounding the
chiller for air flow.
Flow Meter
Flow Switch
Temperature Switch
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