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46-622 Series 3 Liquid Level Switches ASME B31.3 Construction
Do not attempt to repair a float. See Replacement Parts,
Section 5.3 beginning on page 25.
If all components in the control are in operating condition,
the trouble is likely located external to the control. Repeat
inspection of external conditions previously described.
N
OTE: If difficulties are encountered which cannot be identified,
consult the factory or your local representative for assistance.
A complete description of the trouble should be provided
along with information concerning your piping and mounting
arrangement, plus a description of your operating sequence.
Sketches or photographs showing the installation are also
beneficial.
When communicating about your control, be certain to
always specify the complete Model and Serial numbers.
4.3 What To Avoid
1. Never leave switch housing cover off the control longer
than necessary to make routine inspections.
2. Never place a jumper wire across terminals to “cut-out”
the control. If a “jumper” is necessary for test purposes, be
certain it is removed before placing control into service.
3. Never attempt to make adjustments or replace switches
without reading instructions carefully. Certain adjustments
provided for in level controls should not be attempted in
the field. When in doubt, consult the factory or your local
representative.
4. Never use lubricants on pivots of switch mechanisms.
A sufficient amount of lubricant has been applied at the
factory to ensure a lifetime of service. Further oiling is
unnecessary and will only tend to attract dust and dirt
which can interfere with mechanism operation.
Operation of all buoyancy type level devices should be
done in such a way as to minimize the action of dynamic
forces on the float or displacer sensing element. Good
practice for reducing the likelihood of damage to the
control is to equalize pressure across the device very
slowly.
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