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3. Machine Main Power Shuts Down (“
BLUE
” Indicator Off)
a. PROBABLE CAUSES;
1a) Sprinkler activated.
2a) OL12 (overload #12) tripped.
3a) “UNDER VOLTAGE FEATURE” of main disconnect has tripped.
4a) Sprinkler circuit defective.
b. POSSIBLE SOLUTIONS;
1b) Check if the sprinkler is activated, is “SPRINKLER RESET” button lit? Is the sprinkler alarm horn
“ON”? Does the sprinkler water valve have its “ON” indicator extended?
• If yes, it indicates that the sprinkler circuit has shutdown the Main Disconnect, press the lit
“SPRINKLER RESET” button, does it reset?
• If “no,” go to
paragraph 2b below
.
2b) Verify that OL12 (overload #12) has not tripped.
• If “yes,” check circuit, reset OL12, and test.
• If “no,” go to
paragraph 3b below
.
3b) The main disconnect has an “UNDER VOLTAGE DROP OUT FEATURE.” This feature requires
that 110 VAC be present to engage the disconnect switch. If 110 VAC is removed from pin #51 and
pin #52 on the switch, the disconnect will drop out automatically. Verify that 110 volts AC is supplied
to the disconnect and that wires are secure.
• If 110 VAC is present, the disconnect may be defective.
• If 110 VAC is not present go to the
beginning of section 3 at the top of the page
.
4. Sprinkler circuit may be defective.
