46
•
If RTD (Resistive Temperature Device) probe is defective, replace the probe.
NOTE
: If
ALL
systems check out fine, call the
ADC
Service Department at (508) 678-9000.
2. No Control Power
(“
BLUE
” Light Off)
a.
PROBABLE CAUSES;
1a) Line voltage from main fused disconnected.
2a) Main disconnect on the ADS-464 is turned off.
3a) OL11 (overload #11) tripped.
4a) Fuse #1 is blown.
b.
POSSIBLE SOLUTIONS;
1b) Verify main line voltage to ADS-464
• If line voltage is present go to
paragraph #2b below
• If line voltage is not present check fused disconnect and re-test
2b) Attempt to turn the ADS-464 main power handle to the “ON” position
•
If the switch does not engage, verify that sprinkler power is “ON” (“
RED
” light on main door)
•
If “NO,” refer to
paragraph #1b above
3) Open main enclosure and verify that OL11 has not tripped
•
If “YES,” check circuit, restart and test
•
If “NO.” go to
section #3 on page 47
•
Verify that fuse #1 has not blown, check that the “
RED
” L.E.D. indicator is off.
•
If “ON.” (fuse block L.E.D. “ON”), check circuit, replace fuse and test.