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I.L. 41-223.1C
4.0 SETTINGS
Settings are the same as I.L. 41-223 except the min-
imum recommended time dial setting is the No. 1
position. Delete any reference to the 0.5 time dial
setting.
5.0 INSTALLATION
Installation is the same as I.L. 41-223 except use
only semi-flush mounting. A projection mounting
should not be used.
6.0 ADJUSTMENTS AND MAINTE-
NANCE
Acceptance Check
Use
appropriate
internal
3528A01 or 3533A31 for establishing the test circuit
otherwise similar to I.L. 41-223. These test instruc-
tions apply except pickup time of T2 should also be
checked. This should be 150 to 200 milliseconds
which includes operate time of both T1 and T2.
Routine Maintenance
Class 1E relays should be inspected periodically and
the time of operation should be checked at least
once every year or at such other time intervals as
may be dictated by experience to be suitable to the
particular application. These checks should catch
any component failures which occur on a random
basis.
All contacts should be periodically cleaned. A con-
tact burnisher Style #182A836H01 is recommended
for this purpose. The use of abrasive material for
cleaning contacts is not recommended, because of
2
schematic
3526A50,
the danger of embedding small particles in the face
of the soft silver contact, thus impairing the contact.
Calibration
Instructions in I.L. 41-223 apply except for the test
diagram exceptions previously listed under Accep-
tance Check. Note that the special spring shield that
covers the spring on this relay may be removed for
making spring adjustments and then reassembled.
To remove the spring shield, requires that the damp-
ing magnet be removed first. The screw connection
holding the lead to the moving contact should be
removed next. The second screw holding the moving
contact assembly should then be loosened NOT
removed.
CAUTION
This screw terminates into a nut held captive
beneath the molded block. If screw is removed,
difficulty will be experienced in the re-assembly
of the moving contact assembly.
Slide the spring shield outward and remove from
relay. Tighten the screw holding the moving contact
assembly to the molded block.
ELECTRICAL CHECKPOINTS ~
TROUBLESHOOTING
Instructions in I.L. 41-223 apply.
CVQ Relay
( Class 1E Applications)
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