L.B. White FA-MCS-D - Manual (Page 14)

1. Open the box cover and loosen the panel screws for
access to control components.
2 Disconnect the appropriate electrical leads and
remove the mounting screws for the component being
replaced.
3. For reassembly, reverse the ser vice procedure.
Ensure all electrical connections are tight.
4. The SmartBox
™
operates on AC and DC volts. When
checking components, you will need a volt ohm meter
cable of measuring these voltages.
5. DO NOT overtighten the small wiring connection
screws used on the programmable controller or the
touch pad display. Overtightening will strip threads.
Snug the screws in.
14
Maintenance/Cleaning Instructions
1. Ensure all water tight connectors on the SmartBox
™
are securely tightened. Check the interior of the box
for any water/condensation which might have
entered. Replace the connector if necessary.
2. Periodically check the SmartBox
™
to ensure its cover
fits tightly around the cabinet, and that the cover
gasket is in good condition. (No cuts, nicks etc. ).
3. Peridically check all wiring, associated terminals, and
electrical components within the controller for
corrosion, frayed or cut insulation, tight connections,
etc. Repair or replace as necessary.
4. Use a sof t rag to clean the exterior to prevent
dust/dirt from entering the box when opening for
service. Don’t use water or chemicals when cleaning.
Service Instructions
WARNING
Electrical Shock Hazard
■
Do not disassemble or attempt to repair any
components of the SmartBox
™
.
■
All component parts must be replaced if defects are
found.
■
Failure to follow this warning will result in shock,
causing injury, or death.
There are three 1.5 amp 250V fuses in the box. See
Fig.33.
One is connected to the 120 VAC incoming power
supply. The other two are connected to the 0-15 VDC
variable output from the controller to the signal
conditioners.
To remove a fuse, use a small needle nose pliers or
screwdriver and carefully pry the fuse from its holder.
FIG. 33
FUSES
0-15 VDC OUTPUT
(3/16 IN.SPADES)
120 VAC INCOMING POWER
(1/4 IN. SPADES ON FUSE HOLDER)
WARNING
Electrical Shock Hazard
■
Disconnect the electrical supply before servicing the
SmartBox
™
.
■
Failure to follow this warning may result in electrical
shock, causing personal injury or death.