Hardware manual

Precautions 2
Agilent 7500 Series ICP-MS Hardware Manual 2-5
Checking the Exhaust System
CAUTION
Due to potential health hazards, the exhaust gases from the plasma and vacuum
systems must be eliminated through the laboratory ventilation system via the
instrument exhaust vent. If inadequate ventilation occurs, it will cause vaporized pump
fluid, ozone, and other toxic combustion products to accumulate in the laboratory.
Hydrofluoric acid (HF) fumes, if inhaled, cause extensive burning of lung tissue.
CAUTION
There is continuous oil mist from the rotary pump, even when the instrument is not in
Analysis mode. Please make sure the ventilation system is always in operation. Also,
harmful hydrogen may remain even when not analyzing so the ventilation system
should always be on, even in Standby mode.
CAUTION
Ensure that the exhaust system established during installation continues to operate
effectively. Connect a low-flow warning light to the extraction system or use an air-flow
measurement device to give an alarm in the event of a malfunction. Otherwise, check
the laboratory’s ventilation duct and the hood over the sample preparation table before
operating the instrument. Hold a tissue paper into the openings of both ducts to verify
that they are drawing in air.
NOTE
The exhaust system for Agilent 7500 must have the capacity to maintain positive extraction
of 7~8 m
3
/min for the 7500cs (with option duct which is standard on 7500ce/cs) or
4~6 m
3
/min for the 7500a/cx (without optional duct).
CAUTION
If the exhaust fan is inoperable or there is insufficient air flow, do not start the plasma
until the appropriate maintenance personnel have rectified the problem.