Short Cycle Protection/Delay-On-Break; High Pressure Detection; Test Mode; Brownout Protection W/Adjustment - Bard MULTI-TEC W18ABP Series Literature Assembly

start at the same time, adjust the delay-on-break timer
on each unit to a slightly different delay time.

Short Cycle Protection/Delay-on-Break

An anti-short cycle timer is included to prevent short
cycling the compressor. This is adjustable from 30
seconds to 5 minutes via the adjustment knob (see
Figure 31). Once a compressor call is lost, the time
period must expire before a new call will be initiated.
10% of this time is also considered on the delay-on-
make timer (see Delay-on-Make Timer).

High Pressure Detection

High pressure switch monitoring allows for a lockout
condition in a situation where the switch is open. If the
high pressure switch opens, the CCM will de-energize
the compressor. If the switch closes, it will then restart
the compressor after the delay-on-break setting has
expired on the device. If the switch trips again during
the same thermostat call, the compressor will be de-
energized and the alarm terminal will be energized
indicating an alarm. The red LED will light and stay on
until power is cycled to the control or a loss of voltage
is present at Y terminal for more than ½ second.
High Pressure Switch
18-30 VAC Input
Y Input from Thermostat
and High Pressure Switch
Troubleshooting Light

Test Mode

By rapidly rotating the potentiometer (POT) clockwise
(see Figure 31), all timing functions will be removed for
testing.
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 8201-169 is
shipped with all the DIP switches in the 'off' or 'do not
ignore' position (see Figure 31).
FIGURE 31
8201-169 Compressor Control Module
Jumper
Brownout Ignore Time DIP Switches*
* Turn on only one switch for that specific ignore time setting.
10 seconds is the maximum brownout ignore time. If all
switches are "off", the control is in "do not ignore".
Compressor Contactor Output
Alarm Output
Common
Delay-on-Break Time
Adjustment Potentiometer
Manual 2100-712C
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