WATERS CORPORATION TQ, Operator'S Manual, Page: 74 / 192

4 Maintenance Procedures
74 December 6, 2012, 71500126802IVD Rev. C
Cleaning the sample cone and gas cone
The cone gas assembly (comprising the sample cone, O-ring, and gas cone) can
be removed for cleaning without venting the instrument.
Removing the cone gas assembly from the source
Required material:
Chemical-resistant, powder-free gloves
To remove the cone gas assembly from the source
1. Close the source isolation valve (see page 60 ).
Warning:
The source components can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning:
To avoid electric shock, ensure that the instrument is in
Standby mode before commencing this procedure.
Warning:
To avoid puncture wounds, take great care while working
with the source enclosure door open if an ESI probe is fitted (the probe
tip is sharp).
Warning:
The source can be hot. To avoid burn injuries, take great care
while working with the instrument’s access door open.
Caution:
Do not apply any downward force to the source enclosure door
while the door is open.