Innovative L500, Инструкция по установке и эксплуатации

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3.3.2 The Unit Causes
If a thorough inspection of these possible conditions fails
to locate the cause of the problem, proceed to a check of
the switch mechanism.
1. Disconnect power to the level switch.
2. Use an electrical continuity checker to determine if the
switch is electrically functional. If the switch does not oper-
ate properly when electrically activated, the entire level
switch must be replaced.
3. If the switch functions properly electrically but does not
activate when the float changes position, remove level
switch from service. Check the float assembly for obstruc-
tions or accumulation of particles which may cause binding.
If binding is present in the float assembly and cannot be
cleared by normal cleaning procedures, the entire control
must be replaced.
4. If the complete level switch operates properly when
removed from service, check to ensure that liquid is enter-
ing the tank or vessel. A closed valve or clogged pipeline
may prevent movement of the liquid in the vessel.
5. Check the float to make sure it is buoyant in the liquid
(tank or vessel must have adequate level).
6. If the float is determined to be filled with liquid or is col-
lapsed, the entire level switch may be replaced. Do not
attempt to repair the float.
If all of the components of the level switch are in operat-
ing condition, the trouble is likely located external to the
level switch.
NOTE: When in doubt about the condition or performance of a
Multi-Level Vertically Mounted Liquid Level Float Switch control,
consult the factory for further instructions.
Multi-Point Vertically Mounted Liquid Level Float Switch
5
Mounting Attitude
Vertical ± 30° Max.