YSI 5200 - Manual (Page 14)

YSI Incorporated 12 5200 Recirculating System Monitor
structures or near a high heat source, AC motor or transformer, radio transmitter or antenna. Be sure the
monitor can be fully opened and serviced at its installed location by maintenance personnel.
3.3 Installing the Components
There are three basic parts to installing the YSI 5200 Monitor, which are covered in the following
sections:
Ö Installing the YSI 5200 Monitor hardware and additional components
Ö Installing the probe assembly
Ö Wiring the 5200 Monitor
3.3.1 Sealants, Desiccants and Securing the Monitor
Since the 5200 Monitor will likely be subjected to environmental conditions that promote formation of
condensation, it is very important to follow the instructions below before securing the cover to your
unit(s). This will prevent damage to the electronic components within the Monitor and extend the life of
the monitoring system.
The 5200 Monitor is shipped with three compression fittings. The small compression fitting on the left
side of the bottom panel is to be used for the power supply wire. The two larger compression fitting are
supplied with solid plugs installed. These solid plugs should be left in place if no other electrical
connections are to be made to the 5200.
If electrical connections are required for control relays, PC connections or other devices, there are a
number of options to ensure a watertight installation to the 5200’s case.
1. Solid plugs, located in the 2 larger compression fitting, can be frozen (put in a freezer for 1 hour) and
then easily drilled to the required diameter. The drill bit diameter should be slightly smaller than the
wire diameter so that a watertight seal can be made.
2. Compression plugs with two different pre-sized holes are supplied with the 5200 Monitor. The hole
size in the plugs varies with the amount of torque applied to the compression nut. To install a pre-
drilled plug, the solid plug can be “pushed out” of the compression fitting housing and the pre-drilled
plug installed.
3. Optional conduit fittings (YSI #065926) can be installed in place of the compression fittings. When
using conduit fittings, industrial encapsulant (YSI #065921 conduit sealer) must be used to prevent
moisture from entering the 5200 monitor. After all wiring and connections are complete, apply the
sealant to the conduit openings from the inside of the 5200 Monitor. Failure to use industrial
encapsulant may result in damage to the 5200 Monitor.
Also included with the 5200 Monitor is a desiccant pack, YSI #6506. Desiccant absorbs moisture
captured within the enclosure. After all wiring and connections are complete (just before the cover is to be
installed), place the desiccant pack inside the 5200 enclosure near the bottom right corner. Remove the
desiccant from its protective packet prior to installation.
Secure the monitor’s cover using four mounting screws. Note that the cover contains a captured rubber
gasket that provides weatherproofing. Make certain that the gasket is in place and not twisted or damaged.
Make certain that the large blue ribbon cable is not trapped in the gasket channel before inserting the
screws. When securing the screws, take care not to cross thread. The screws are stainless steel, and the
receiving threads are brass. Do not over-tighten!
CAUTION: Anytime the 5200 cover is removed, replace the desiccant pack with a new pack. Anytime
the 5200 front panel is removed, place it on top of the 5200 Monitor or secure it so that the blue ribbon
cable does not bear the weight of the cover.