Working Area Requirements
Water Temperature Control
5-10
iCE 3000 Series Pre-Installation Requirements Guide (P/N 9499 500 30031, Version 1.6)
Thermo Scientific
A two stage regulator is required to provide good precision and stable
flame conditions. It may be necessary to fit a heater to the regulator to
prevent freezing, which would cause flow rate variations and an unstable
flame.
Water Temperature Control
A recirculating chiller should be used to remove waste heat from the
graphite furnace. The water temperature should be set to 5 °C below
ambient temperature.
The flow requirement of the furnace is 0.7 L/min. The pressure should
be between 1.4 and 6.9 bar (20 to 100 psi). The chiller must have a
cooling capacity in excess of 900 W.
A suitable chiller (ThermoFlex™ 900) can be supplied from your local
Thermo Fisher Scientific organization.
Requirements of the ThermoFlex 900:
•
230 V, 50 Hz, 7 A or
115 V, 60 Hz, 13 A
•
696 × 36 × 627 mm (27.4 × 14.2 × 24.7 in.)
The furnace is supplied with plastic connecting tubing of 6.5 mm ID.
Connection to the water chiller should be within 3 m of the instrument.
If a greater distance is required, insulated tubing must be used.
The water quality shall be distilled or deionized water of approximately
18 M
/cm
3
.
Thermo Fisher Scientific does not recommend using normal water as
this can lead to corrosion and malfunction due to deposits of mineral
and organic materials. If the use of normal water cannot be avoided, at
least a suitable fungicide or biocide should be added to the water.
WARNING
Hazardous Gases.
Risk of injuries. Nitrous oxide is an anesthetic. If
inhaled in large amounts, it can be fatal.
The gas supports combustion to a higher degree than air and produces
highly combustible mixtures very readily.
WARNING
Toxic Gases.
Risk of intoxication. Fungicides and biocides are toxic.
Follow laboratory safety rules and manufacturer’s instructions for
handling. Also, refer to the Material Safety Data Sheets (MSDS).
