Pressure Service Ports; Outdoor Fan Motor - Bard MULTI-TEC W18ABP Series Literature Assembly

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 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 1
second (A DIP switch), 5 seconds (B DIP switch) or 10
seconds (C DIP switch); time is not cumulative—only
the longest setting will apply. If the voltage recovers
during the brownout delay period, the compressor will
start.
If a brownout condition is detected by the 8201-169,
the troubleshooting light will flash blue. The light will
continue to flash until the cooling call is satisfied or
power is removed from the Y terminal. This condition
does not prevent operation, it only indicates that a
brownout condition was present at some point during
the cooling call. If a brownout condition is detected, CC
will be de-energized and will retry after the delay-on-
make timer is satisfied; this process will continue until
call is satisfied.
If user chooses the 'do not ignore' position (all three
DIP switches "off") 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 and generator
power didn't cause a problem. The units lost power,
shut off and came back on line normally. With the
introduction of almost instantaneous transfer switches,
the millisecond long power glitch can be enough that
the compressor will start to run backwards. In this
scenario, the CCM will catch this and restart the units
normally.

Pressure Service Ports

High and low pressure service ports are installed on
all units so that the system operating pressures can be
observed. A pressure table covering all models can be
found on page 23. It is imperative to match the correct
pressure table to the unit by model number.
This unit employs high-flow Coremax valves instead of
the typical Schrader type valves.
WARNING! Do NOT use a Schrader valve core removal
tool with these valves. Use of such a tool could result in
eye injuries or refrigerant burns!
To change a Coremax valve without first removing the
refrigerant, a special tool is required which can be
obtained at www.fastestinc.com/en/SCCA07H. See the
replacement parts manual for replacement core part
numbers.
Manual 2100-712C
Page 26 of 38

Outdoor Fan Motor

Due to design considerations of the condenser section
of the wall-mount unit, placement/clearance of the
motor/fan blade is critical to heat dispersal. Should a
change of motor or fan blade be necessary, please view
Figure 32 for proper clearance adjustment.
FIGURE 32
Fan Blade Setting
AIRFLOW
MIS-1724
Model
W18A/W18L
W24A/W24L
W30A/W30L
W36A/W36L
"A"
Dimension A
1.00"
1.25"