Maruson 700VA 12V User manual

700VA/1.2KVA
Inverter/Charger
1. Introduction
This robust inverter is designed to power your home appliances or precious electronics. It also
can accept wide input voltage to generate stable and pure power source to power downstream
AC loads. Based on different types of loads, this inverter can provide pure and stable power
either to house appliances or to sensitive personal computers via selectable operation modes.
It is a brilliant choice for home owners or small office users in the unstable power area.
2. Product Overview
Front View:
Power Switch
Display indication (please see the Operation section for the details)
Back View：
Universal Type: South Africa Type
Model with input power cord Model with input power cord
Schuko Type
Model with input power cord
Input voltage range selector External battery connector
AC input Charge current selector
Input breaker Output receptacles
Maruson Technology Corporation
18557 East Gale Avenue
City of Industry, California 91748, U.S.A.
Tel: [phone] Fax: [phone] Toll Free: 1-888-MARUSON
E-Mail: Inf[email protected]om
Website: www.MarusonUSA.com

3.Important Safety Warning (SAVE THESE INSTRUCTIONS)
Before using the inverter, please read all instructions and cautionary markings
on the unit, this manual and the batteries.
General Precaution-
CAUTION! The unit is designed for indoor use. Do not expose this unit to rain, snow or
liquids of any type.
CAUTION! To reduce risk of injury, only use qualified batteries from qualified distributors or
manufacturers. Any unqualified batteries may cause damage and injury. Do NOT use old or
overdue batteries. Please check the battery type and date code before installation to avoid
damage and injury.
CAUTION! Do not disassemble the inverter. Contact with the qualified service center when
service or repair is required.
WARNING! Provide ventilation to outdoors from the battery compartment. The battery
enclosure should be designed to prevent accumulation and concentration of hydrogen gas at
the top of the compartment.
CAUTION! Use insulated tools to reduce the chance of short-circuit when installing or
working with the inverter, the batteries, or other equipments attached to this unit.
CAUTION! For battery installation and maintenance, read the battery manufacturer's
installation and maintenance instructions prior to operating.
Personnel Precaution -
CAUTION! Careful to reduce the risk or dropping a metal tool on the batteries. It could spark
or short circuit the batteries and could cause an explosion.
CAUTION! Remove personal metal items such as rings, bracelets, necklaces, and watches
when working with batteries. Batteries can produce a short circuit current high enough to
make metal melt, and could cause severe burns.
CAUTION! Avoid touching eyes while working near batteries.
CAUTION! Have plenty of fresh water and soap nearby in case battery acid contacts skin,
clothing, or eyes.
CAUTION! NEVER smoke or allow a spark or flame in vicinity of a battery.
CAUTION! If a remote or automatic generator start system is used, disable the automatic
starting circuit or disconnect the generator to prevent accident during servicing.
4. Specifications
MODEL
700VA 12V
1.2KVA 12V
CAPACITY
700VA/500W
1200VA/840W
INPUT
Voltage
230VAC
Voltage Range
170-280 VAC (For personal computer);
90-280 VAC (For home appliances)
OUTPUT
Voltage Regulation (Batt. Mode)
230VAC ± 5 %
Transfer Time
10ms typical (For personal computer);
20ms typical (For home appliances)
Waveform
Pure Sine Wave
BATTERY
Battery Voltage
12 VDC
Floating Charge Voltage
13.5 VDC
Maximum Charge Current
10/15Amp
10/20Amp
Recommended Battery Capacity
100 Ah –200 Ah
PHYSICAL
Dimension(DxWxH) mm
289 x 290 x 127
Net Weight (kgs)
4.5
4.8
5.Installation
NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged.
Connect External Battery
Step 1- Install a DC Breaker in a positive battery line. The rating of the DC Breaker must be at
least 60Amp for 700VA model and 100A for 1200VA model to guarantee safe operation without
interruption. Keep the DC breaker off. (see Fig. 1)
Step 2- Connect battery cables to the external batteries. To have better performance, the
recommended battery capacity is 100Ah –200 Ah.
Following battery polarity guide printed near the battery terminal to connect external batteries!
RED cable to the positive terminal (+);
BLACK cable to the negative terminal (-)
Note: For the user operation safety, we strongly recommend that you should use tapes to
isolate the battery terminals before you start to operate the unit. When connecting to external
batteries, do not cause any short circuits.
1) Single battery connection (Refer to Fig. 1): When using a single battery, its voltage
must be equal to the Nominal DC Voltage of the unit.
Fig. 1
Conventions used:
WARNING! Warnings identify conditions or practices that could result in personal injury;
CAUTION! Caution identify conditions or practices that could result in damaged to the
unit or other equipment connected.
DC breaker

2) Multiple batteries in series connection (Refer to Fig. 2): All batteries must be equal
in voltage and amp hour capacity. The sum of their voltages must be equal to the nominal DC
Voltage of the unit.
Fig 2
Note: when connecting batteries in series connection, it’s necessary to use battery wires at
AWG#8 or above.
3) Multiple batteries in parallel connection (Refer to Fig. 3): Each battery's voltage
must be equal to the Nominal DC Voltage of the unit.
Fig 3
Note: when connecting batteries in parallel connection, it’s necessary to use battery wires at
AWG#10 or above.
Step 3- Make sure to connect the polarity of battery side and the unit correctly.
Positive pole (Red) of battery to the positive terminal (+)of the unit.
Negative pole (Black) of battery to the negative terminal (-) of the unit.
Step 4- Take the DC breaker on.
Connect to Utility and Charge
Plug in the AC input cord to the wall outlet. The unit will automatically charge the connected
external battery even though the unit is off.
6. Operation
Power On/Off
Once the inverter has been properly installed, press the power switch to turn on the unit. The
unit will work automatically. When press the power switch again, the unit will be turned off.
WARNING! The unit may have output power when connected to the utility, even though it is
powered off. To completely cut off the output power, please switch off the unit and disconnect
the unit from the utility.
Input Voltage Range Selector
a). “170V-280V”: setting for precious electronic devices
If you select this mode, the unit's input utility range will be 170~280VAC as normal home
UPS. If the utility is higher or lower than this range, the unit will transfer to inverter mode
automatically. And you can connect the computer systems or other precision home
equipment when you select this operation mode.
b). “90V-280V”: setting for home appliances
If you select this mode, the unit's input utility range will be extended to 90~280VAC. If the
utility is higher or lower than this range, the unit will transfer to inverter mode automatically.
So, you can connect the home equipments, such as light bulb, fluorescent tube, fan, or TV
on this mode.
Caution!! If you select the “90V-280V” mode and connect the computer to the output of the
unit, the computer may reboot if the input voltage is too low to be accepted.
Charging Current Selector
a) High: setting battery charging current at 20A for 1.2KVA, 15A for 700VA
b) Low: setting battery charging current at 10A
LCD Display & Audible Alarm
Status
LCD Display
Audible Alarm
Line mode
Off
Line mode with charging
battery.
and flashes
Off
Battery mode
Off
Off-mode charging
and flashes
Off
Fault mode
Fault code will be displayed.
Fan is locked: F01
Over temperature: F02
Battery voltage is too high: F03
Output short circuited or Over
temperature: F05
Output voltage is abnormal: F06
Over load time out: F07
Bus voltage is too high: F08
Bus soft start fail Main relay
failed led: F09
Main relay failed: F11
Beep Continuously
sounding.
The unit will shut down
after it’s in fault mode for
15 seconds.
Battery weak at battery
mode.
The mark will flash
every second
Beep once every 1 second
The unit is waning of
overload.
The mark will flash
every second.
Beep once every 0.5
second
Power limitation warning
in Line mode
The mark will flash every
second.
Beep twice every 3
seconds
Fan is locked
Beep three times every second
Battery is over charged
Beep once every 1second

Load level indicator: Battery capacity indicator:
Display
Load Level
Display
Battery Capacity
75%~100%
75%~100%
50%~75%
50%~75%
25%~50%
25%~50%
0%~25%
0%~25%
7. Trouble Shooting
Use the table below to solve minor problems.
Problem
LCD/ Buzzer
Explanation /
Possible cause
What to do
Buzzer beeps
continuously
Fault code 07.
Overload error. The
inverter is loaded with
more than 110% load
and time is up
Reduce the connected load
by switching off some
equipment.
Fault code 05.
Output short circuited.
Check if wiring is connected
well and remove abnormal
load.
Temperature of internal
converter component is
over 120°C.
Check whether the air flow of
the unit is blocked or
whether the ambient
temperature is too high.
Fault code 02.
Internal Inverter
component over 100°C
Fault code 03.
Battery is over charged.
Return to repair center.
The battery voltage is
too high.
Check if spec and quantity of
batteries are meet
requirements.
Fault code 01.
Fan fault
Replace the fan.
Fault code 06.
Output abnormal
(Inverter voltage below
than 190Vac or is higher
than 260Vac)
1. Reduce the connected
load.
2. Return to repair center
Fault code 08.
Internal components
failed.
Return to repair center
Mains exist but the
unit works in battery
mode.
Input voltage is
displayed as 0 on
the LCD
Input protector is tripped
Check if AC breaker is tripped
and AC wiring is connected
well.
The mark
on or
flash
Insufficient quality of AC
power (Shore or
Generator)
1. Check if AC wires are too
thin and/or too long.
2. Check if generator (if
applied) is working well, or
check if input voltage range
setting is correct
(UPSAppliance)
Unit shuts down
automatically during
startup process.
LCD and buzzer
will be active for 3
seconds and then
complete off.
The battery voltage is
too low (<1.91V/Cell)
1. Re-charge battery.
2. Replace battery.
No response after
power on.
No indication.
1. The battery voltage is
far too low. (<1.4V/Cell)
2. Battery polarity is
connected reversed.
1. Check if batteries and the
wiring are connected well.
2. Re-charge battery.
3. Replace battery.
When the unit is
turned on, internal
relay is switched on
and off repeatedly.
LCD display
flashing.
Battery is disconnected.
Check if battery wires are
connected well.
Input circuit breaker
acted and no output
voltage on terminal
but the LCD display
show the normal
output voltage
LCD display is
normal
The relay had been
damaged during the AC
short circuit
Return to repair center.
If there is any abnormal situations occur, which doesn't list above, please call the service
people immediately for professional examine.