Innovative L500, Installation And Operating Manual

Page: 6 / 15

2.0 Preventive Maintenance
Periodic inspections are a necessary means to keep your level
control in good working order. This control is a safety device
that protects the valuable equipment it serves. A systematic
program of preventive maintenance should be implemented
when the control is placed into service. If the following
instructions are observed, your control will provide reliable
protection of your equipment for many years.
2.1 What to Do
2.1.1 Inspect Connections Monthly
The level switches may sometimes be exposed to excessive
heat or moisture. Under such conditions insulation on elec-
trical wires may become brittle, eventually breaking or peeling
away. The resulting bare wires can cause short circuits.
Check wiring carefully and replace at first sign of brittle
insulation. Check all electrical connections to ensure that they
are tight. Check wiring carefully and repair or replace if nec-
essary.
2.1.2 Inspect Entire Unit Periodically
A periodic cleaning of the float and stem will ensure con-
tinued free movement of the mechanism.
2.2 What to Avoid
1. NEVER leave the switch wiring exposed to the elements.
2. NEVER place a jumper wire across terminals to “cut-out”
the control. If a jumper is necessary for test purposes,
ensure that it is removed before placing the control into
service.
3. NEVER use in systems containing iron particles. The
magnet in the float assembly can attract the particles and
the float may become jammed.
Multi-Point Vertically Mounted Liquid Level Float Switch
3