STG global TANVAC HDV3000, Operator'S Manual

Page: 273 / 329

EP250 Panel Operation and Troubleshooting
463-3000-01 Rev D. 23-Sep-2013 7
Warning!
Low oil pressure is not an indication of low oil level.
For best possible protection LOFA recommends using
our solid-state oil level shutdown switch.
Note
Most shutdown switches are grounded through the switch body.
Do not use insulating sealant (i.e. Teflon tape) when installing switches.
Temperature LED (Red)
A solidly illuminated Temperature LED indicates high engine temperature failure. The panel
typically senses high temperature from a ground contact switch on the engine. When a
sender/switch combination is used on the engine, the marking WK or W generally indicates the
switch terminal. This input typically expects a normally open switch (ground contact when engine
temperature is too high). A defective switch or shorting the shutdown input to ground can cause
over temperature fault indication. Additionally, when using sender/switch combinations,
swapping the WK or W and G terminal can cause unintended shutdowns. The panel can be
configured for temperature failure to indicate only.
Warning!
If the temperature switch is not in contact with coolant due to
coolant loss the engine is not protected from overheating.
For best possible protection, LOFA recommends using
our solid-state coolant level shutdown switch.
Note
Most shutdown switches are grounded through the switch body.
Do not use insulating sealant (i.e. Teflon tape) when installing switches.
Some thermostat housings are composites and do not provide ground for the
switch.
AUX 1 LED (Red)
A solidly illuminated AUX 1 LED indicates auxiliary 1 failure (i.e., coolant level, oil level, belt
breakage, hydraulic pressure, etc.). The panel typically senses failure using a ground contact
switch. Auxiliary inputs are equipment specific and determined by the equipment manufacturer.
A defective switch or shorting the shutdown input to ground can cause fault indications. The
panel can be configured for auxiliary 1 failure to indicate only.
A blinking AUX 1 LED indicates SW input failure. The panel typically senses failure using a ground
contact switch. The SW input is equipment specific and determined by the equipment
manufacturer. A defective switch or shorting the shutdown input to ground can cause fault
indications.
AUX 2 LED (Red)
A solidly illuminated AUX 2 LED indicates an auxiliary switch 2 fault (i.e., air flow restriction, fuel
level, etc.) but by default does not cause a shutdown. The panel typically senses failure using a