Scully ST-15C Series, Technical Manual

Page: 13 / 28

13
INSTALLING REPLACEMENT MODULE
1.
Place the new Control Module onto the mounting plate and attach the (4) mounting screws.
2.
Reconnect the wires to TB2.
3. Reconnect the wires to TB1.
4.
Close the cover and attach the (16) cover bolts.
5.
Apply power to the Control Unit.
6.
Factory installed jumper. do not remove unless ST-15C is to be connected to a Scully Model SP-BLHK
sensor.
Note: The ST-15C Replacement Control Module cannot be repaired in the field. A damaged or faulty module
must be replaced with an equivalent Scully ST-15C Control Module. The ST-15C Replacement Control
Module must only be installed in Scully’s explosion-proof enclosure. The enclosures’ explosion-proof and
weatherproof integrity must be maintained.
The ST-15C Control Module should not be subjected to any mechanical impact. Do not allow build-up of
dust on the Control Module.
Caution: Do not expose the Control Module to aggressive substances that may attack the exposed
materials.
When used properly, contact with the control module will not cause physical injury or harm and does not
pose non-electrical dangers. The unit does not produce excessive surface temperatures, or emit infrared
electromagnetic or ionizing radiation
3.5 Indicator Lights
The control unit employs explosion-proof LED style lights. These do not require any maintenance or
changing of bulbs. In the event a light is faulty, it must only be replaced with parts numbers shown in
Replacement parts Sheet in Appendix 4.0. Follow instructions provided with the replacement indicator lights
(pilot lights).
Figure 1:ST-15C Control Module Illustration