Emerson 185 Manuel D’Utilisation
TROUBLESHOOTING
Series 185
(continued)
9
381333–319 A
Problem
Cause and Solution
The ATS does not immediately
transfer the load to the
generator.
1. Verify that the Generator Accepted light is on. If it is off, see previous trouble-
shooting problem. The ATS will not transfer the load to an unacceptable source.
2. Wait approximately 10 seconds for the transfer to generator time delay. This
fixed delay allows the generator output to stabilize before a load is applied to it.
3. Press the Bypass Time Delay button for immediate load transfer to the generator.
The ATS transfers the load to
the generator, but the genera-
tor bogs down (struggles or
slows down). The ATS retran-
sfers back to the utility.
1. The generator may be overloaded. Check to see if the generator circuit breaker
tripped. Check the sum of the loads to be sure it does not exceed the capacity of
the generator. Some motor loads require three times more power for starting.
the generator. Some motor loads require three times more power for starting.
2. Check for short circuit in a connected load.
3. Observe the Load on Utility and Load on Generator lights.
3. Observe the Load on Utility and Load on Generator lights.
The generator stops after a
running for awhile. The ATS
retransfers back to the utility
(if acceptable).
1. Verify proper generator operation; it may have run out of fuel or shut down
because of low oil level (see generator manual).
2. The generator may be overloaded. Check to see if the generator circuit breaker
tripped. Check the sum of the loads to be sure it does not exceed the capacity of
the generator. Some motor loads require three times more power for starting.
the generator. Some motor loads require three times more power for starting.
3. Check for short circuit in a connected load.
4. Observe the Load on Utility and Load on Generator lights.
4. Observe the Load on Utility and Load on Generator lights.
The ATS does not retransfer
the load back to the utility.
1. Verify that the Utility Accepted light is on. The ATS will not transfer the load to
an unacceptable source.
2. Wait approximately 15 minutes for the retransfer to utility time delay. The utility
must be acceptable for 15 minutes continuously.
3. Press the Bypass Time Delay button for immediate load retransfer to the utility.
The ATS retransfers the load
back to the utility but the
generator keeps running.
1. Wait approximately 5 minutes for the unloaded running (engine cooldown) time
delay.
2. The engine cooldown fixed time delay is important to prevent generator damage.
The generator exerciser does
not seem to work.
1. Verify that the Automatic Generator Exerciser light is blinking. When the utility is
acceptable and the load is on the utility, this light flashes the number of days until
the next exercise period. When the light is off, no exercise period is set. The
light is also off when the generator is running.
the next exercise period. When the light is off, no exercise period is set. The
light is also off when the generator is running.
2. With ALL POWER OFF, verify that the exerciser is turned on. Check DIP switch
S1 actuator 7, and S2 actuator 10. See Table B for generator exerciser settings.
3. With ALL POWER OFF, check the 9 volt battery. Replace, if necessary, with a
quality alkaline battery: Duracell MN1404, Everready 522, Panasonic 6AM6, or
equivalent. See Figure 5.
equivalent. See Figure 5.
The generator exerciser does
not transfer the load to the
generator.
1. With ALL POWER OFF, verify that exercise with load is turned on. Check DIP
switch S1 actuator 8. See Table B for generator exerciser settings.