Magnum Energy MMS1012 User manual

Owner’s Manual
MMS Series
Inverters/Chargers

© 2010 Magnum Energy, Inc.
Disclaimer of Liability
The use of this manual and the conditions or methods of installation,
operation, use, and maintenance of the MMS Series Inverter/Charger
are beyond the control of Magnum Energy, Inc. Therefore, this company
assumes no responsibility and expressly disclaims any liability for
loss, damage, or expense whether direct, indirect, consequential, or
incidental that may arise out of or be in any way connected with such
installation, operation, use, or maintenance.
Due to continuous improvements and product updates, the images
shown in this manual may not exactly match the unit purchased.
Restrictions on Use
The MMS Series Inverter/Charger may only be used in life-support
devices or systems with the express written approval of Magnum
Energy. Failure of the MMS Series Inverter/Charger can reasonably
be expected to cause the failure of that life-support device or system,
or to affect the safety or effectiveness of that device or system. If the
MMS Series Inverter/Charger fails, it is reasonable to assume that
the health of the user or other persons may be endangered.
Contact Information
Magnum Energy, Inc.
2211 West Casino Rd.
Everett, WA 98204
Phone: [phone]
Fax: [phone]
Web: www.magnumenergy.com
Record the unit’s model and serial number in case you need to provide
this information in the future. It is much easier to record this information
now, instead of trying to gather it after the unit has been installed.
Model: Serial Number:
MMS1012 U1
MMS1012-G U1
Conventions Used in this Manual
Terminology
Shore power or External AC power - refers to alternating current
(AC) provided by the utility electric power grid or from a generator.
Mobile application - refers to inverters used in a recreational vehicle
(RV), boat, or a truck installation.

© 2010 Magnum Energy, Inc. i
Safety symbols
To reduce the risk of electrical shock, fire, or other safety hazard, the
following safety symbols have been placed throughout this manual
to indicate dangerous and important safety instructions.
WARNING: This symbol indicates that failure to take a
specified action could result in physical harm to the user.
CAUTION: This symbol indicates that failure to take a
specified action could result in damage to the equipment.
Info: This symbol indicates information that emphasizes
or supplements important points of the main text.
IMPORTANT PRODUCT SAFETY INSTRUCTIONS
This manual contains important safety instructions that must be fol-
lowed during the installation and operation of this product. Read all
instructions and safety information contained in this manual before
installing or using this product.
All electrical work must be performed in accordance with local,
state, and federal electrical codes.
This product is designed for indoor/compartment installation. DO
NOT expose to rain, snow, moisture, or liquids of any type
Use insulated tools to reduce the chance of electrical shock or
accidental short circuits.
Remove all jewelry such as rings, watches, bracelets, etc., when
installing or performing maintenance on the inverter.
Always disconnect the batteries or energy source prior to install-
ing or performing maintenance on the inverter. Live power may
be present at more than one point since an inverter utilizes both
batteries and AC. Turning off the inverter may not reduce this
risk. As long as AC power is connected, it will pass through the
inverter regardless of the ON/OFF power switch setting.
Always verify proper wiring prior to starting the inverter.
Do not operate the inverter if it has been damaged.
Do not dismantle the inverter; there are no user-serviceable parts
contained in this product. Attempting to service the unit yourself
could cause electrical shock. Internal capacitors remain charged
after all power is disconnected.
No AC or DC disconnects are provided as an integral part of this
inverter. Both AC and DC disconnects must be provided as part
of the system installation.
•
•
•
•
•
•
•
•
•

© 2010 Magnum Energy, Inc.
No overcurrent protection for the battery supply is provided as an
integral part of this inverter. Overcurrent protection of the battery
cables must be provided as part of the installation.
No overcurrent protection for the AC output wiring is provided as
an integral part of this inverter. Overcurrent protection of the AC
output wiring must be provided as part of the installation.
IMPORTANT BATTERY SAFETY INSTRUCTIONS
Wear eye protection (safety glasses) when working with bat-
teries.
Remove all jewelry such as rings, watches, bracelets, etc., when
installing or performing maintenance on the inverter.
Never work alone. Always have someone near you when working
around batteries.
Use proper lifting techniques when working with batteries.
Never use old or untested batteries. Check each battery’s label for
age, type, and date code to ensure all batteries are identical.
Batteries are sensitive to changes in temperature. Always install
batteries in a stable environment.
Install batteries in a well ventilated area. Batteries can produce
explosive gasses. For compartment or enclosure installations,
always vent batteries to the outside.
Provide at least one inch of air space between batteries to provide
optimum cooling.
Never smoke when in the vicinity of batteries.
To prevent a spark at the battery and reduce the chance of ex-
plosion, always connect the cables to the batteries first. Then
connect the cables to the inverter.
Use insulated tools at all times.
Always verify proper polarity and voltage before connecting the
batteries to the inverter.
To reduce the chance of fire or explosion, do not short-circuit
the batteries.
In the event of accidental exposure to battery acid, wash thor-
oughly with soap and water. In the event of exposure to the eyes,
flood them for at least 15 minutes with running water and seek
immediate medical attention.
Recycle old batteries.
SAVE ALL INSTRUCTIONS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
ii

© 2010 Magnum Energy, Inc. iii
Table of Contents
1.0 Introduction..................................................................1
MMS Series Models ............................................................... 1
How an Inverter/Charger Works ............................................. 2
Inverter Applications for Mobile Installations ............................ 2
Advantages of Pure Sine Wave vs Modified Sine Wave Inverter ... 2
Appliances and Run Time....................................................... 2
Standard Features and Benefits.............................................. 3
Battery Temperature Sensor .............................................. 6
2.0 Installation....................................................................7
Pre-Installation .................................................................... 7
Unpacking and Inspection...................................................... 7
Locating and Mounting the Inverter........................................10
Wiring Guidelines ................................................................13
DC Wiring...........................................................................14
DC Wire Sizing and Overcurrent Protection .........................14
DC Overcurrent Protection................................................15
DC Grounding.................................................................16
DC Cable Connections......................................................17
Battery Bank Wiring ............................................................18
Inverter to Battery Bank Wiring ............................................18
DC Ground Wire..............................................................19
DC Negative Wire............................................................19
Battery Temperature Sensor .............................................19
DC Positive Wire .............................................................19
AC Wiring...........................................................................20
Neutral to Safety Ground Bonding .....................................20
AC Wiring Connections.....................................................21
AC Wire Size and Overcurrent Protection............................21
AC Input Wiring ..............................................................22
AC Output Wiring ............................................................24
Ground-Fault Circuit Interruption Breakers .........................25
Functional Test....................................................................25
3.0 Operation ................................................................... 27
Operating Modes .................................................................27
Inverter Mode.................................................................27
Standby Mode ................................................................28
Protection Circuitry Operation ...............................................32
Inverter Start-up.................................................................33
ON/OFF Switch ...............................................................33
Status LED Indicator .......................................................33
Factory Default Settings .......................................................34
4.0 Maintenance and Troubleshooting...............................36
Recommended Inverter and Battery Care ...............................36
RV/Marine Off-Season Storage ..............................................36
Resetting the Inverter..........................................................37