NewMar Power System Manual
M-CMDRII 063022
Page 22 of 43
Model: COMMANDER II AND COMMANDER II+
Version 1.0
9.1
System
•
During normal operation the cable entries to the MCBs may loosen over time due to movement in the
cable strands. To avoid damage to the MCB’s and cable entries due to heat build-up and arching, it is
recommended that the retaining torque is periodically checked at least annually.
•
MCB’s should be maintained at a torque of 2Nm.
•
All other connections should also be checked at this time.
9.2
EM4x Controller
•
The controller can give a good indication of the condition of the system. Alarm logs can show issues
with the system and rectifiers and should be regularly checked.
•
As a minimum, check that the float voltage and load current is as expected.
•
If the batteries are fully charged, check the battery current is zero or near to zero amps, and check that
the amp-hours remaining is 100%.
9.3
Rectifiers and Converters
•
During normal operation some dust will build-up on the front of the rectifiers. This should be kept to a
minimum by regularly wiping the rectifiers to avoid accumulation within the rectifiers and blocking the
airflow to the units. The positioning of the system and surroundings will determine the regularity of
this requirement.
•
In extremely dusty positions it is recommended that the units are removed and cleaned with
compressed air to prevent airflow blockages.
•
Check the air flow front and back to the rectifiers is unimpeded by cables or otherwise.
•
Check nothing has entered the rectifiers such as insects or geckos.
9.4
Batteries
•
Battery maintenance depends on the individual manufacturer’s specification, please contact the
battery supplier for recommendations.
•
Periodic discharge tests may be beneficial to ensure reliable system operation and may be
recommended by the battery manufacturer.
CAUTION The user must be aware of the consequences of battery State of Health (SoH)
with regards their specific load requirements and implement their own policy regards
the end of life of the batteries.
9.5
Ventilation Maintenance
Check that there has been no change in the required airflow space or environment that impacts the
ventilation. Refer to
6.6 Ventilation
for the required details.
10
T
ROUBLE
-
SHOOTING AND
S
ERVICING
If the red
LED is alight:
•
Unplug the rectifier and re-engage.
•
Check AC power to the rectifier.
•
Check for rectifier alarms in the monitor Urgent Alarm list.
•
If symptoms persist, contact a service agent.
If the yellow LED is alight:
•
Check the monitor Non-Urgent Alarm list.
