Regal 53 SC Owner's Manual page 78

MASS COMBI BATTERY CHARGER FOR HOUSE BATTERY/INVERTOR OPTION
50 AMP MASS COMBI
CHARGER
DEDICATED TO
HOUSE BATTERY
The Mastervolt Mass Combi is a battery charger, inver-
tor, and an AC transfer system in one enclosure. This
is an option which allows the house battery current to
invert to AC current to run refrigerators when the vessel
is not using generator or shore power.
The battery charger is electronically controlled. It is
dedicated to charging the yacht's "house" battery. Just as
the other Chargemaster battery charger on board it fea-
tures 3 automatic stages: Bulk, Absorption, and Float.
Review the Chargemaster section several pages back for
stage information since both chargers are similar in bat-
tery charging functions..
Battery Charging Operation
Again, the optional Mass Combi battery charger (50 amp)
is dedicated to the house battery.
Note that residual charging affecting the cranking batter-
ies could take place if the house battery was fully charged,
the Mass Combi charger was off, and the voltage sensitive
relays close.
The 3 position status panel switch needs to be in the
STATUS
"down position" for charging the house battery on ves-
PANEL
sels without inverters. In this position, the inverter is
disabled. Also, make sure the battery charger breaker la-
belled inverter on the port side of the AC main ship's
panel is activated.
The middle switch setting is off. The upper switch setting
is for vessels with the invertor. The switch signifi es in-
verter/charger activation when activated.
Once the charging process is started you will be able to
monitor the results on the remote status panel located at
the starboard side of the salon main ship's panel. It is an
exact duplicate of the status panel located on the charger
in the bilge.
Note in the system wiring diagram there is a temperature
sensor run to the house battery. This circuit terminates
in the Mass Combi unit. The house battery is protected
against overheating. If house battery overheating is de-
tected the Mass Combi unit will shut down.
26
Chapter 4
There is an inverter fuse (250 amp, type
ANL) located on the starboard engine
battery switch board. This fuse protects
the house battery DC circuitry. The fuse
is located between the house battery and
the Mass Combi unit positive battery ter-
minal.