Waters ACQUITY QDa, Обзор и руководство по обслуживанию

Страница: 98 / 104

June 28, 2016, 715003956 Rev. C
Page 98
To connect the nitrogen exhaust line:
1. Locate the exhaust trap bottle in an accessible area below the instrument (see the figure on
page 99 ).
2. Cut a length of 12-mm tubing long enough to connect the instrument to the exhaust trap
bottle.
3. Connect one end of the tubing to the exhaust port on the side of the instrument and the
other end to one of two ports on the exhaust trap bottle.
Note: Ensure that there is a negative gradient between the exhaust port and the trap bottle
inlet.
4. Cut a length of 12-mm tubing long enough to connect the exhaust trap bottle to the
laboratory exhaust system.
5. Insert one end of the tubing into the remaining port on the exhaust trap bottle and route the
other end to the laboratory exhaust system.
Warning:
• Biohazards or toxic LC solvents and analytes can be carried in the nitrogen exhaust, which
must be vented via the nitrogen exhaust trap bottle and laboratory exhaust system. The
laboratory exhaust system must provide a minimum vacuum of 0.20 kPa (2 mbar, 0.03 psi)
below atmospheric pressure (negative pressure).
• The exhaust connections can be contaminated with biohazardous and/or toxic materials.
Always wear chemical-resistant, powder-free gloves when performing this procedure.
• To avoid the buildup of hazardous gases, do not place the nitrogen exhaust trap bottle in an
enclosed cabinet.
Notice: The instrument requires two separate exhaust systems: one for nitrogen, the other
for the backing pump. Vent them to atmosphere through separate exhaust lines. Oil mist
can seriously damage the instrument if the nitrogen exhaust line connects with the backing
pump exhaust line. Your warranty does not cover damage caused by routing exhaust lines
incorrectly.
Notice: To avoid gas leaks, use the sharp knife to cut the PTFE tubing squarely (that
is, perpendicular to its horizontal axis).
Notice: To avoid gas leaks, use the sharp knife to cut the PTFE tubing squarely (that
is, perpendicular to its horizontal axis).