Condenser Fan Alarms; Dirty Condenser Coil Alarm; Compressor; Compressor Components - Bard FUSION-TEC HR58APA Installation Support Materials

Condenser Fan Alarms

Dirty Condenser Coil Alarm

The unit will continuously monitor system conditions
to determine if the condenser coil is dirty or blocked.
If the system monitors three consecutive cooling
cycles that indicate a dirty condenser coil, an alarm
will be generated. This alarm is a notification and will
automatically reset when conditions are no longer
present. The end user has the ability to adjust how
dirty the coil gets before an alarm is generated and how
many consecutive cycles before the alarm is triggered.
To change these settings:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Adv System
Config; press ENTER key.
4. Press UP or DOWN keys to scroll to Dirty Cond
Alarm (B4); press ENTER key.
5. Press ENTER key to scroll to Alarm Threshold (see
Figure 2.26).
6. Press UP or DOWN keys to adjust the % restriction
to desired level.
7. Press ENTER key to save value and move the
cursor to Trips before alarm.
8. Press UP or DOWN keys to change the Trips before
alarm to the desired value.
9. Press ENTER key to save.
10. Press ESCAPE key several times to return to Main
Menu screen.
FIGURE 2.26
Adjusting Dirty Condensor Alarm Settings
High Pressure Transducer Alarm
When the high pressure transducer sensor value is out
of range (0-650 PSIG), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.
This alarm is fixed and cannot be adjusted.

Compressor

Compressor Components

Compressor
Three Phase Scroll Compressor Start Up Information
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in either
direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verification of proper rotation must be made.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
Verification of proper rotation must be made at the time
the equipment is put into service. If improper rotation
is corrected at this time, there will be no negative
impact on the durability of the compressor. However,
reverse operation for over 1 hour may have a negative
impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for an extended period of time, the
compressor's internal protector will trip.
All three phase compressors are wired identically
internally. As a result, once the correct phasing is
determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.

Compressor Control Module (CCM)

The compressor control module is a low voltage
monitoring device necessary to monitor power and
indicate a low incoming voltage situation caused by
inadequate shore power or generator operation. The
monitoring device protects the unit against compressor
contactor "chatter" and reverse compressor rotation
during these situations.
Compressor protection device has an adjustable
30-second to 5-minute timer (red-dial). This module
features a delay-on-make for initial start up (or anytime
power is interrupted) for a minimum 2 minutes plus
10% of the red-dial setting. There is no delay during
routine operation of the unit. The compressor control
module also monitors the high pressure switch, and
Page 39 of 53