Waters Xevo TQD, Обзор и руководство по обслуживанию

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Gas ballasting the roughing pump
March 14, 2014, 715004387 Rev. B 105
Gas ballasting a pump fitted with a handle-operated gas ballast
valve
To gas ballast the roughing pump:
1. Move the gas ballast valve handle on the pump counterclockwise, from
the horizontal position to the vertical position.
2. Run the pump for 30 to 60 minutes.
Tip:
It is normal for the roughing pump temperature to increase during
ballasting. To maintain an ambient temperature of less than 40 °C in
the space where the pump is located, ensure the space is adequately
ventilated.
3. Move the gas ballast valve handle on the pump clockwise, from the
vertical position to the horizontal position.
Warning:
To avoid burn injuries, take great care while working with the
roughing pump; it can be hot.
Notice:
To avoid damage, follow these guidelines:
• do not vent the instrument when the roughing pump is gas
ballasting.
• do not gas ballast the roughing pump while the instrument is in
Operate mode.
• avoid gas ballasting the roughing pump for more than 2 hours.
TP02654