11
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
1218CT0112 PP rev 04‑14‑2022
!
Maintenance
WARNINGS
• Any modification of this unit beyond what is outlined in this instruction will void product warranty.
• For your safety, it is important to follow local, state, federal and/or OSHA rules that apply to working inside, above,
or around the storage tank and piping area. Use all personal protective equipment required for working in the specific
environment.
•
Install in accordance with all applicable local, state, and federal regulations and codes.
•
This device is intended to be used as an auxiliary warning to the operator of an abnormal condition of the system,
such as a possible overfill situation and should not be the only system in place to prevent an unwanted condition, such
as preventing a tank from overfilling. It is the sole responsibility of the operator to continuously prevent any spillage
regardless of the situation.
•
In the event of malfunction, remove from service immediately and contact Morrison Bros. Customer Service.
The Communication Module and Power Converter Module do not require routine maintenance after the installation
is completed. If either of these modules require maintenance due to a operational related issue, please follow the
troubleshooting guide below.
Reference
Number
Problem
Cause
Steps
Solution
1
Ensure that the Modbus feature on the 1218C is disabled.
2
Check the wiring on connector J4 on the 1218C and connector J2 on
the Communication Module. Refer to the Communication Module
wiring section beginning on page 7.
3
If the Red LED continues to blink, contact customer service.
1
Check the LEDs on the Communication Module, if the Red LED is
blinking this confirms there is a communication issue. Refer to step
1 in this guide.
2
If Red LED is not blinking, check the wiring of the J3 connector on
the Communication Module, ensure that the RX and TX are in the
correct position with respect to the FMS. Refer to the
Commmunication Module wiring section on page 7.
3
If the Red LED is not blinking and this problem persists, contact
customer service.
1
Check the wiring of the J3 connector on the Communication
Module, ensure that the RX and TX are in the correct position with
respect to the FMS. Refer to the Commmunication Module wiring
section on page 7.
2
Refer to the troubleshooting guide for the FMS system that is being
used.
1
Check the 1218C to see if this has power. If this is not powered the
Communication Module will not have power.
2
If 1218C has power unscrew the front panel of the Power Converter
Module, if the LED is not illuminated on the AC/DC converter it is
not receiving power or has malfunctioned. Refer back to the Power
Converter Module wiring steps on page 4.
3
If AC/DC converter still does not have power, contact customer
service.
4
If AC/DC converter does have power and the Communication
Module does not, refer back to the Communication Module wiring
instructions starting on page 7.
5
After checking the wiring if the Green LEDs on the Communication
Module are still not illuminated, contact customer service.
Troubleshooting Guide
This indicates that the
Communication Module is not
receiving any data from the 1218C
Red LED on Communication
Module is blinking.
1
No new data is being communicated
between the 1218C and the
Communication Module.
Tank data read from the FMS is
incorrect.
2
3
FMS not receiving reports
Communication error
Green LEDs not illuminated
Power error
4
