Hach-Lange SD900 Basic User Manual - Manual (Page 8)

Figure 2 Product components
1 Base (Standard, compact or composite) 6 Battery charger (optional)
2 Components for a single-bottle option (bottle and
support can change)
7 AC power supply (optional)
3 Center section with controller 8 Strainer
4 Battery (optional) 9 Intake tubing, vinyl or Teflon-lined
5 Top cover 10 Components for a multiple-bottle option (bottles
and retainers can change)
Installation
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Confined space precautions
D A N G E R
Explosion hazard. Training in pre-entry testing, ventilation, entry procedures, evacuation/rescue
procedures and safety work practices is necessary before entering confined spaces.
The information that follows is supplied to help users understand the dangers and risks that are
associated with entry into confined spaces.
On April 15, 1993, OSHA's final ruling on CFR 1910.146, Permit Required Confined Spaces, became
law. This standard directly affects more than 250,000 industrial sites in the United States and was
created to protect the health and safety of workers in confined spaces.
Definition of a confined space:
A confined space is any location or enclosure that has (or has the immediate potential for) one or
more of the following conditions:
• An atmosphere with an oxygen concentration that is less than 19.5% or more than 23.5% and/or a
hydrogen sulfide (H
2
S) concentration that is more than 10 ppm.
• An atmosphere that can be flammable or explosive due to gases, vapors, mists, dusts or fibers.
• Toxic materials which upon contact or inhalation can cause injury, impairment of health or death.
8 English