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FDL (E2.1) 02/2019 page 18/76
• Permissible ambient temperature range during operation: +18 °C / 64.4 °F up to +40 °C / 104 °F. At
elevated ambient temperature values, fluctuations in temperature can occur.
The ambient temperature should not be substantially higher than the indicated ambient tem-
perature of +25 °C / 77°F to which the specified technical data relate. For other ambient condi-
tions, deviations from the indicated data are possible.
• Permissible ambient humidity: 70 % r.H. max., non-condensing.
• Installation height: max. 2000 m / 6562 ft. above sea level.
When placing several chambers of the same size side by side, maintain a minimum distance of 250 mm /
9.84 in between each chamber. Wall distances: rear 100 mm / 3.94 in, sides 160 mm / 6.29 in.
CAUTION
Danger by stacking.
Damage to the chambers.
∅ Do NOT place safety drying ovens on top of each other.
To completely separate the chamber from the power supply, you must disconnect the power plug. Install
the chamber in a way that the power plug is easily accessible and can be easily pulled in case of danger.
Do not install or operate the oven in potentially explosive areas.
DANGER
Explosion hazard.
Danger of death.
∅ Do NOT operate the chamber in potentially explosive areas.
∅ KEEP explosive dust or air-solvent mixtures AWAY from the vicinity of the chamber.
The safety drying oven FDL with housing protection IP 33 acc. to DIN 40050 (see type plate) must NOT
be installed and operated in explosive and fire-endangered areas.
Operation of the cooling slots must on no account be impaired. The vapors produced when the heating
the content must be extracted from the safety drying oven through non-combustible exhaust gas or ex-
haust air ducts. The exhaust duct (nominal diameter 100 mm / 3.9 in) on the rear of the chamber serves
for this purpose, to which a suitable exhaust air duct can be connected, e.g., a corrugated aluminum hose.
The exhaust connection must be made via a draught limiter; the exhaust air must not be guided into ducts
for combustible gas.
CAUTION
The rear exhaust duct will become hot during operation.
Danger of burning.
∅ Do NOT touch the exhaust duct during operation.
4. Installation of the equipment
4.1 Operating instructions
Depending on the application and location of the chamber, the operator of the safety drying oven must
provide the relevant information for safe operation of the chamber in a set of operating instructions.
Keep these operating instructions with the chamber at all times in a place where they are
clearly visible. They must be comprehensible and written in the language of the employees.
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