1 Ambient Temperature Use Ranges of the BG-4
2 May 21, 2003
3 Draeger Safety, Inc. is clarifying the specifications regarding the ambient temperature during operation of the Draeger BG-4 Closed Circuit Breathing Apparatus
4 The approved minimum permissible ambient temperature for the use of the BG-4 is -5°C 23°F.The approved minimum permissible ambient temperature for the use of the BG-4 is -5°C 23°F.
5 The approved minimum permissible ambient temperature can be adjusted to -15°C or 5°F if the BG-4 is Stored at a temperature range of 20°C +/- 5°C or 68°F +/- 23°F.The approved minimum permissible ambient temperature can be adjusted to -15°C or 5°F if the BG-4 is Stored at a temperature range of 20°C +/- 5°C or 68°F +/- 23°F.
6 The use of ice in the Cooling System is only required at ambient temperatures above 0°C (32°F).The use of ice in the Cooling System is only required at ambient temperatures above 0°C (32°F).
7 At ambient temperatures below 0°C (32°F) ice is not required to be used.
8 Draeger Safety, Inc. recommends when using the BG-4 to follow themaximum ambient temperature criteria: Draeger Safety, Inc. recommends when using the BG-4 to follow the maximum ambient temperature criteria: In maximum ambient temperatures of up to 40° or 104°F the apparatus with the cooling medium may be used up to 4 hours.In maximum ambient temperatures of up to 40° or 104°F the apparatus with the cooling medium may be used up to 4 hours.
9 In maximum ambient temperatures of up to 60°C or 140°F the apparatus with the cooling medium may be used up to 1 hour.In maximum ambient temperatures of up to 60°C or 140°F the apparatus with the cooling medium may be used up to 1 hour.
10 In maximum ambient temperature of up to 90°C or 194°F the apparatus with the cooling medium may be used up to 15 minutes.In maximum ambient temperature of up to 90°C or 194°F the apparatus with the cooling medium may be used up to 15 minutes. If you have any questions, regarding these specifications please contact Mary E. Doane at Ext 294 or your Draeger Safety Regional Sales Manager.If you have any questions, regarding these specifications please contact Mary E. Doane at Ext 294 or your Draeger Safety Regional Sales Manager.