Mechanical Installation - Hach 5500sc Installation Manual

Installation
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.

Mechanical installation

Risk of injury or death. Make sure that the wall mounting is able to hold 4 times the weight of the
equipment.
Personal injury hazard.
Instruments or components are heavy. Use assistance to install or move.
The object is heavy. Make sure that the instrument is securely attached to a wall, table or floor for a
safe operation.
This instrument is rated for an altitude of 2000 m (6562 ft) maximum. Use of this instrument at an
altitude higher than 2000 m can slightly increase the potential for the electrical insulation to break
down, which can result in an electric shock hazard. The manufacturer recommends that users with
concerns contact technical support.
Install the analyzer indoors, in a non-hazardous environment. Refer to the supplied mounting
documentation.
Plumbing
Fire hazard. This product is not designed for use with flammable liquids.
Do not install reagents until all plumbing is complete.
Make sure to use the specified tubing size.
Sample line guidelines
Select a good, representative sampling point for the best instrument performance. The sample must
be representative of the entire system.
To prevent erratic readings:
• Collect samples from locations that are sufficiently distant from points of chemical additions to the
process stream.
• Make sure that the samples are sufficiently mixed.
• Make sure that all chemical reactions are complete.
Connect the sample stream
Install each sample line into the center of a larger process pipe to minimize interference from air
bubbles or bottom sediment.
Keep the sample lines as short as possible to prevent the accumulation of bottom sediment. The
sediment can absorb some of the analyte from the sample and cause low readings. The sediment
can later release the analyte and cause high readings. This exchange with the sediment also causes
a delayed response when the analyte concentration in the sample increases or decreases.
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Figure 3 shows examples of good and bad installation.