31
® 2018 Valco Companies, Inc.
Devices that require an open and close channel such as curtain machines, inlets and chimney dampers, should be
interlocked. This prevents sending open and close signals simultaneously to curtain or inlet machines, which could
damage equipment.
In the event two interlocked channels are switched on, the first channel on has priority.
For inlet devices installed on these channels, set the appropriate switches OFF. For example, if Curtain Group #1 is on
channels 1 and 2, then interlock (move to OFF) switches 1 and 2.
An odd-numbered channel can be interlocked with the next even-numbered channel (1 & 2, 3 & 4, and so on).
Interlocking must always be done in pairs.
Equipment Groups
Verify that all interlocks are properly set for open/close devices.
Manually switch each equipment group ON and OFF with the front panel toggle switches. Verify the connection
of the proper devices to each channel. Run each device long enough to confirm that it is fully functional and
properly adjusted.
Backup Systems
Test the backup equipment override thermostats and curtain drops. Make sure these devices operate the way they
are expected to before depending on them to protect animals.
Alarms
Turn off the electricity to the controller. This will cause an alarm and allow you to verify that each alarm device
is operational.
Clear any ACTIVE ALARM by pushing
ENTER
while the alarm is on the screen.
Failure to clear an alarm will prevent the alarm relay from resetting.
Testing Interlocks
Output Relays - What you NEED to know! - continued
Channel Interlocking
*
