Algas-SDI Operations and Maintenance Manual – P/N – 52634
5- 9
Options
5
AUTOMATIC MAINTENANCE OR HIGH LIQUID WARNING
Optional liquid level switches can be installed in the Filtaire to warn maintenance
that the Filtaire requires draining due to the accumulation of liquid in the
reservoir. Provisions for single or dual liquid level switches can be made during
manufacturing. One switch allows a warning when the reservoir needs draining.
A second switch can be used to shut down the system if liquid continues to
increase in the reservoir. This same system can be used to provide an additional
safety that will prevent liquid propane from getting into consuming equipment if a
failure allows liquid to pass through the vaporizer.
Figure 4 shows the physical location of the liquid level switches. Contact the
factory for any special design requirements or applications.
Figure 5 has electrical drawings of suggested connections of the liquid level
switched to provide an alarm and a control output. Maximum current through the
liquid level switch is ¼ amp so an interposing relay is required for larger loads.
