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Rack Control Module
TM
Product Manual
Rev. 1.2, May 9, 2014
Page 24
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Step 16: Perform the TD80 Overfill Prevention System Test and Verification
Each TD80 system installed on the tanker is to be tested by the following procedure. For
two compartment tankers, steps 1 through 7 must be repeated for each TD80 and Finch.
The RCM combines information from both TD80s, so each RCM compartment channel
needs to be tested. Step 8, testing the permissive at the API sockets only requires one of
the channels to confirm correct operation.
These steps describe tests to be completed after mechanical and electrical installation of
the TD80 system. These tests may also be used to confirm correct system operation after
repair. Normal responses are indicated for each test. Proceed to troubleshooting if the
test results differ from the ones shown.
System Test and Verification Checklist:
Checked
Step
1. Power ON Check. Confirm Finch display and RCM startup.
2. Check Finch display for communication with the TD80.
3. Volume display
4. Set the Fill alarm
5. Clear all alarms
6. Simulated level and alarm response. Volume display, alarm
response and RCM indicators are tested from 2LO to Spill and back
to 2LO
7. Test the optional 4-20mA output.
8. Test the Optic and/or Thermistor sockets
Table 3-2: System Test and Verification Check list
1. Turn power on to the TD80 system. The Display should turn on and go through its
start-up sequence (approximately 10 seconds long).
a. Finch Display is tested, showing numbers 0 thru 9 and then letters A thru F
b. Finch Display Fill/Fall alarm is pulsed
i. Installed light will blink
ii. Installed horn will briefly sound
iii. Installed underfill prevention system will activate then deactivate
c. Finch Display Fail/Spill alarm is pulsed
i. Installed light will blink
ii. Installed horn will briefly sound
iii. Installed Overfill prevention system will activate then deactivate
d. RCM Indicators are as follows:
i. Power Indicator is ON and solid YELLOW
ii. Sensor #1 and #2 are OFF
iii. Permit is ON and solid RED
2. Finch
Display will show “----” for up to several seconds, then one of the following.
Clear any active alarms before continuing to Step 3:
a.
“2 LO” if the tank is empty or contains liquid and the depth is less than 5.5”
b. Level if the tank contains liquid and the depth is greater than
5.5”
c.
Error message “E xx”, where xx is a number
d.
“SPill”
e. Ensure RCM Indicators are as follows: