Chapter 4 Installation; Ambient Conditions; Location Requirements - Thermo Scientific 3907 Operating Manual

Thermo Scientific
Installation

Ambient Conditions

Location Requirements

The environmental chamber must only be operated in a location that meets all of the
ambient condition requirements listed below:
Installation location indoors in dry areas free from drafts.

The dust pollution may not exceed the contamination category 2 based on EN

61010-1. Using the environmental chamber in an atmosphere with electrically
conductive dust is prohibited.
The room must be equipped with appropriate ventilation. Solid, level, fire-proof

surface; no flammable materials opposite to the rear panel of the environmental
chamber.
The electrical circuitry of the environmental chamber has been designed for an

operating height of up to 2000 m above sea level.
If a high-voltage test is to be performed on the unit, it must first be heated for around

30 minutes at 50°C.
The ambient temperature must be within 16 °C - 32 °C (61 °F to 90 °F).

Devices that produce excessive amounts of heat must not be placed near the

environmental chamber.
Power line voltage variations must not exceed ±10 % of the nominal voltage.

Transient surges must lie within the range of levels that normally occur in the power

supply system. The impulse withstand voltage based on surge category II of IEC
60364-4-443 shall be applied at the nominal voltage level.
Relative humidity up to 80%, non condensing, at an ambient temperature of 31°C,

decreasing linearly to 50% at 40 °C non condensing.
Please note: Should condensation exist, wait until the moisture has evaporated

completely before connecting the environmental chamber to a power source and
powering up.
WARNING
Connect to suitable power supply only.
See chapter Technical Specifications for specific power input for the respective
unit.
Installation |
Chapter 4
Model 3907 & 3948 | 4-1