Bard WG Series Installation Instructions Manual page 33

The conditions needed for the unit to enter test mode
are as follows: POT must start at a time less than or
equal to the 40 second mark. The POT must then be
rapidly rotated to a position greater than or equal to
the 280 second mark in less than ¼ second. Normal
operation will resume after power is reset or after the
unit has been in test mode for at least 5 minutes.
Brownout Protection with Adjustment
Brownout protection may be necessary if the utility
power or generator power has inadequate power
to prevent the voltage from dropping when the
compressor starts. This is rare but can happen if the
generator is undersized at the site or if the site is in a
remote location far from the main power grid. Under
normal circumstances, allowing the brownout to be
ignored for a time period should not be needed. The
8201-164 is shipped in "0" do not ignore position,
with all the DIP switches off (see Figure 14).
If ignoring the brownout is needed because of
the above conditions, three preset timers can be
set by DIP switches in order to delay signaling a
power brownout for a specific length of time after
compressor contactor is energized. This allows the
High Pressure Switch
18-30 VAC Input
Y Input from Thermostat
and High Pressure Switch
Troubleshooting Light
FIGURE 14
8201-164 Compressor Control Module
Jumper
Brownout Ignore Time DIP Switches*
* Turn on only one switch for that specific ignore time setting
compressor a time period to start even if the voltage
has dropped and allows the voltage to recover. This
delay only happens when the CC terminal energizes.
The delay can be set to 500 milliseconds (A DIP
switch), 1000 milliseconds (B DIP switch) or 1500
milliseconds (C DIP switch); time is not cumulative—
only the longest setting will apply. If the voltage
recovers during the brownout time period, the
compressor will start. If the voltage doesn't recover
during the time period, the blue LED will flash. A
flashing blue LED indicates that a brownout condition
was sensed; the control will continue to flash the
blue LED until the Y call has been satisfied. The
compressor will not start if the blue LED is flashing.
If user chooses the "0" do not ignore position when
the site has inadequate utility or generator power,
this could lead to the compressor never starting. The
control will see the brownout immediately and not
start.
A common scenario and one that has been seen
in the field is when a unit or units switches from
utility power to generator power. With slower transfer
switches, the time delay between the utility power
Delay-on-Break Time
Adjustment Potentiometer
Compressor Contactor Output
Alarm Output
Common
Manual 2100-587J
Page 33 of 59