Page 130 – Bulletin 100-50-9.1
19.16 SENSOR SCAN
The S3C Case Control system uses multiple sensors for
monitoring and control. Upon new start up, the controller
will scan and find all the sensors that are currently attached;
both on the Case Control and the Valve Module(s). The
controller will locate these sensors in memory to aid in
troubleshooting. If a sensor is removed and not replaced,
an alarm will be generated. If extra temperature sensors for
monitoring are installed at initial set-up then later removed,
then the controller should have a sensor scan performed.
This scan allows the controller to determine the proper
sensors required by the application.
1. From the default display, press the button. The
display will show .
2. Use the ▲ button to enter the technician password
and press SET (default is 81).
3. Press SET to enter the Service sub-menu. The display
will show (Clean Mode).
4. Use the ▲ button and scroll to N; press SET.
5. Use the ▲ buttons and scroll to ; press SET.
19.17 DEFROST CURRENT BASELINE RESET
The S3C Case Control supports an external current
transformer (CT) that may be applied across the defrost
heater circuit to monitor and measure current. The Sporlan
provided CT is a two wire design and is wired into the
“Auxillliary” Temperature Sensor input. See Accessories
Section for part number. At some point, it may be necessary
to reset the baseline defrost current that the controller has
stored in memory. This is required after defrost heater or
evaporator coil replacement.
1. From the default display, press the button. The
display will show .
2. Use the ▲ button to enter the technician password
and press SET (default is 81).
3. Press SET to enter the Service sub-menu. The display
will show (Clean Mode).
4. Use the ▲ button and scroll to d (Defrost Heater
Reset); press SET.
5. Use the ▲ buttons and scroll to ; press SET.
19.18 FAN CURRENT BASE LINE RESET
The S3C Case Control has an integrated detection circuit
for fan current. This feature allows current monitoring
of the bank of fans for each case. At some point, it may
be necessary to reset the baseline fan current that the
controller has stored in memory. This is required after a
fan replacement. Note: Before resetting the baseline
current ensure that the evaporator is clear for proper
air flow and that all the fans are operating correctly
in the case.
1. From the default display, press the button. The
display will show .
2. Use the ▲ button to enter the technician password and
press SET (default is 81).
3. Press SET to enter the Service sub-menu. The display
will show (Clean Mode).
4. Use the ▲ button and scroll to d (Fan Fault
Detection Reset); press SET.
5. Use the ▲ buttons and scroll to ; press SET.
19.19 FUSE REPLACEMENT
The S3C Case Control has replacement cartridge fuses on
the liquid line solenoid/pulse valve, fans, lights and defrost
circuits. The S3C Valve Module has a fuse on the liquid line
solenoid/pulse valve circuit. The Display Module (DM)
does not have any serviceable components.
Warning: Use caution when working around high
voltage components. Ensure power is removed from all
inputs prior to handling the controller.
19.19.1 CHANGING A FUSE ON THE CASE
CONTROLLER
For replacement use the following fuse specification or
equivalent:
Liquid Line Solenoid/Pulse Valve – 1A 250VAC 2AG
Littelfuse Part Number 0225001.MXP
Fans, Lights and Defrost – 6.3A 250VAC 5X20MM Littelfuse
Part Number 021806.3HXP
1. Remove power from controller.
2. Remove upper housing.
a. Remove Ethernet from port 1 (if used) and place
index finger on upper housing as shown.
b. Place thumb on front edge of lower housing as
shown.
c. Using a pinching motion (push down with thumb
and up with index finger), pop off upper housing.
Note: Use caution not to impact circuit board.
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