ISD Alarm Message Diagnostics MISSING RELAY SETUP
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MISSING RELAY SETUP
One or more required shutdown alarms have not been assigned to a control device.
ISD MONITORING CATEGORY
ISD Setup Diagnostic self-tests (ref. page 17) are designed to monitor and ensure proper monitor configuration.
Setup self-test will verify that the ISD system is properly setup to shutdown affected fueling point(s) as required by
CP-201 regulations.
DIAGNOSTIC PROCEDURE
Once all the Common Causes are removed, enter and exit the Setup Menu using the MODE key, then press the
red ALARM button on the TLS and the condition should clear.
COMMON CAUSES
• Tanks are configured with a control device (Relay, PLLD, WPLLD, or VLLD). The control device does not have
all the correct alarms assigned.The following ISD alarms must be assigned to the relay:
- ISD GROSS PRESSURE FAIL
- ISD DEGRD PRESSURE FAIL
- ISD VAPOR LEAKAGE FAIL
• When there is a Vapor Processor installed the following ISD alarms must be assigned:
- ISD VP PRESSURE FAIL
- ISD VP STATUS FAIL
• When ISD system is configured as an EVR Balance type the following HOSE alarms must be assigned:
- FLOW COLLECT FAIL
• When the ISD system is configured as an EVR Vacuum Assist type the following HOSE alarms must be
assigned:
- GROSS COLLECT FAIL
- DEGRD COLLECT FAIL
FIELD NOTES
• When configuring Relays, do not fill in the Tank ID field for relays that are not used by ISD to shut down tank
STP. For example, when PLLD is used as the primary control for shutting down the STP and a relay is used to
signal a tank overfill alarm, do not fill in the Tank ID field for the relay controlling the overfill alarm signal. This will
cause a MISSING RELAY SETUP warning.
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