Winco ATS - Manual (Page 8)

PAGE 6 60706-131 8107-00
CLOCK NOTES:
This seven day exerciser clock has seven additional
program cycles available. Always keep in mind the odd
number turns the unit on and the even number shuts the
unit off. (i.e. (3 on, 4 off) (5 on, 6 off) etc.)
The relay in the clock will not work unless the transfer
switch is installed and powered up. The relay needs
120 volts AC to operate.
If, when you finish programming the clock, you get an
“EEEE” on the display, it stands for error. The most
common error is that the day of operation has not been
properly set at each step or a program has been turned
on and not turned off. (i.e. programs not properly
grouped 1& 2, 3 & 4, 5 & 6, etc.)
On the face of clock is a small button marked “R”, this is
a reset switch. Depressing this switch will remove all
programming in the clock including the time. Use a
small screwdriver or the tip of a pencil to depress this
button. This should be used only as a last resort.
INITIAL START UP
Move the selector switch on the engine generator set to
the “AUTOMATIC” position. Next move the selector
switch on the A.T.S. panel to the “START” position. The
engine generator set should start up. If it fails to start at
this time, check the selector switch on the engine
generator to be sure it is in the “automatic” position.
Also check to be sure the DC interconnection wiring is
correct. When the selector switch on the A.T.S. is moved
to the “DISABLE” position the engine generator set will
shut off. As long as line power is still applied to the
transfer switch during this test period the A.T.S. will not
transfer the load to the generator.
Next you need to test the complete system. To accom-
plish this you will have to fail the incoming line power to
the A.T.S. panel. First move both selector switches to the
automatic position. Then fail the incoming power. All the
loads connected to the A.T.S. should now be dead. The
engine generator set should now start up. As soon as
the engine generator set reaches operating voltage the
generator side contactor will close and the load will be
applied to the engine generator.
Restoring the line power to the transfer switch will cause
the generator side contactor to open. The line side
contactor will close as soon as the generator side
contactor clears the mechanical interlock and closes the
electrical interlock. These interlocks ensure that you get
a clean ‘break before make’ action in the transfer switch.
The restoration of line power also breaks the run signal
to the engine generator set allowing it to shut down.
This completes your installation and unit testing.
ALWAYS leave the system in automatic mode unless
servicing the unit. For automatic operation, keep both the
generator set and transfer selector switches in the
“AUTOMATIC” position.
TROUBLESHOOTING HINTS
ATS PANEL WILL NOT TRANSFER TO
EMERGENCY SUPPLY (GENERATOR).
1. No AC generator output from generator.
2. Broken or defective mechanical/electrical inter
locks.
3. Defective holding coil in the generator side
contactor.
4. Wiring error between generator set and transfer
switch.
5. Defective Start Stop Relay
ATS PANEL WILL NOT CLOSE WITH
NORMAL POWER APPLIED.
1. Proper normal line power not available at line
terminals in ATS panel.
2. Defective holding coil in line side contactor.
3. Broken or defective mechanical/electrical inter
locks.
4. Defective Start Stop Relay.
5
Defective Phase Failure Monitor. (Three Phase
Units only)
6. Phase Rotation wrong to the Phase Failure
Monitor.
PREVENTIVE MAINTENANCE
Reasonable care and preventive maintenance will insure
high reliability and a long life for the Automatic Transfer
Switch.
*************
***** WARNING *****
*************
When performing any type of maintenance on this
equipment make sure the selector switch on the A.T.S. is
in the “disable” position. Disconnect normal power and
confirm with a reliable meter that all power has been
disconnected.
Clean and inspect the switch once a year. De-energize
all power sources, both line and engine generator set,
then brush and vacuum away any excessive dust and dirt
accumulation. You can at this time with the contactor de-
energized remove the contactor covers and check the
contacts. Make sure the contacts are clean and not
burned or pitted.