Iris Technology Corporation QP-1800 User manual

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 1
QuietPower 1800 (QP-1800)
DC to AC Power Inverter
Model QP-1800 / PN 287A107 (System)
Owner’s Manual
Revised 15 OCT 01
Iris Technology Corporation [CAGE 78535]
17175 Von Karman Avenue, Suite 104, Irvine, CA 92614-0904
www.iristechnology.org

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 2
1 IMPORTANT SAFETY INSTRUCTIONS .................................................................. 3
2 INTRODUCTION....................................................................................................... 5
2.1 QuietPower Inverter Key Features ............................................................................................................5
3 INSTALLATION ........................................................................................................ 6
3.1 Requirements for Installation.....................................................................................................................6
3.2 Locating the QuietPower Inverter .............................................................................................................6
3.3 Mounting the QuietPower Inverter............................................................................................................7
3.4 Wiring the QuietPower Inverter ................................................................................................................8
4 QUIETPOWER INVERTER OPERATION ................................................................ 8
4.1. Principles of Operation ...............................................................................................................................8
4.2 Output Waveform........................................................................................................................................8
4.3 Control Panel ...............................................................................................................................................9
4.4 QuietPower POWERSAVE Mode............................................................................................................10
4.5 Inverter Operating Limits and Protection Features...............................................................................10
5 TESTING................................................................................................................. 11
6 TROUBLESHOOTING GUIDE ............................................................................... 12
6.1 Fault Conditions and Indicators...............................................................................................................12
7 WARRANTY ........................................................................................................... 13
8 WARRANTY SERVICE........................................................................................... 13
9 BATTERY INFORMATION ..................................................................................... 14
9.1 Battery Type...............................................................................................................................................14
9.2. Battery Size ................................................................................................................................................15
10. PERFORMANCE GRAPHS AND SPECIFICATIONS ............................................ 16
10.1. Power Derating Curve...............................................................................................................................16
10.2. Efficiency Curve.........................................................................................................................................17
11 SYSTEM COMPONENTS....................................................................................... 18
QuietPower 1800 Inverter System............................................................................................................................18
11. APPENDIX A. TECHNICAL ADDENDUM............................................................. 20

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 3
1 Important Safety Instructions
Item Identification
The QuietPower Inverter System, PN 287A107, consists of four (4) items:
·QuietPower Inverter QP-1800 (PN 287A101) [Qty 1]
·QuietPower Inverter NATO SLAVE Cable (PN 287A106) [Qty 1]
·QuietPower Inverter Vibration Isolators (Neoprene, Cylindrical) with mounting hardware [Qty 4]
·QuietPower Inverter Operator’s Manual [Qty 1]
General Safety Precautions
1. Save these instructions. This Owner's Manual contains important safety and operating
information for the QuietPower Inverter.
2. The QuietPower Inverter has a Ground Fault Circuit Interrupter (GFCI) and a Circuit Breaker for
your safety. These features are critical to the safe operation of this system and must not be disabled.
3. Do not expose the QuietPower Inverter to rain, snow, spray, bilge or dust. To reduce risk of fire
hazard, do not cover or obstruct the ventilation openings. Do not install the QuietPower Inverter in a
zero-clearance compartment. Overheating may result.
4. Do not use attachments not recommended or sold by Iris Technology. Doing so may result in a
risk of fire, electric shock, or injury to persons.
5. The QuietPower Inverter (PN 287A101) is designed to connect to a military vehicle 24 VDC
power system through the supplied NATO SLAVE Cable (PN 287A106).
6. To avoid a risk of fire and electric shock, make sure that existing wiring is in good electrical
condition. Do not operate the QuietPower Inverter with damaged wiring.
7. Do not operate the QuietPower Inverter if it has received a sharp blow, been dropped, or
otherwise damaged in any way. If the QuietPower Inverter has been damaged, please refer to Section
8.0 of this manual: Warranty Service.
8. Do not disassemble the QuietPower Inverter; see the Service section of this manual for
instructions on obtaining service for the QuietPower Inverter. Attempting to service the unit yourself may
result in a risk of electrical shock or fire.
9. To reduce risk of electrical shock, disconnect the DC power from the QuietPower Inverter before
attempting any maintenance or cleaning or working on any equipment and circuits connected to the
QuietPower Inverter. Turning off controls will not reduce this risk.
Explosive Gas Precautions
1. This equipment contains components which can produce arcs or sparks. To prevent fire or
explosion do not install in compartments containing batteries or flammable materials or in locations which
require ignition protected equipment. This includes any space containing gasoline-powered machinery,
fuel tanks, or joints, fittings, or other connection between components of the fuel system.
2. Working in the vicinity of a lead-acid battery is dangerous. Batteries generate explosive gases
during normal battery operation.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 4
3. To reduce the risk of battery explosion, follow these instructions and those published by the
battery manufacturer and the manufacturer of the equipment in which the battery is installed.
Precautions When Working With Batteries
1. Someone should be within range of your voice or close enough to come to your aid when you
work near a lead-acid battery.
2. Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes.
3. Wear complete eye protection and clothing protection. Avoid touching eyes while working near
batteries.
4. Clean battery terminals before making connections. Wear eye protection to keep corrosion from
coming in contact with eyes.
5. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters
eye, immediately flood eye with running cold water for at least 20 minutes and get medical attention
immediately.
6. NEVER smoke or allow a spark or flame in vicinity of battery or engine.
7. Do not drop a metal tool on the battery. The resulting spark or short-circuit on the battery or other
electrical part may cause an explosion.
8. Remove personal metal items such as rings, bracelets, necklaces, and watches when working
with a lead-acid battery. A lead-acid battery produces a short-circuit current high enough to weld a ring or
the like to metal, causing a severe burn.
FCC INFORMATION
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that the interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
·Reorient or relocate the receiving antenna.
·Increase the separation between the equipment and receiver.
·Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
·Consult the dealer or an experienced radio/TV technician for help.
Department of the Navy Product Evaluation
This equipment has been tested by SPAWAR (Department of the Navy) for MARCORSYSCOM and is
recommended for use in wheeled military vehicles. Contact Iris Technology for details about obtaining a
copy of this evaluation (Restricted Distribution, FOUO).

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 5
2 Introduction
Thank you for your purchase of this QuietPower Inverter. As a high quality, true sine wave output
inverter, you can expect the QuietPower to deliver exceptional performance and give you years of
dependable operation. The true sine wave AC output from the QuietPower Inverter ensures all AC loads
operating from the unit perform efficiently and correctly. Since these loads were designed to operate from
true sine wave voltage, you can expect these loads to operate the same as if operating from grid/utility
supplied power. In some cases, the true sine wave output from the QuietPower Inverter is even superior
to the power supplied by your utility company.
To get the most out of your QuietPower Inverter, please carefully read and follow the instructions in this
guide. Pay special attention to the Important Safety Instructions in this guide and to the CAUTION and
WARNING statements found throughout the guide and on the product. Please retain all packaging.
Should you have any questions before, during, or after installation, please call Iris Technology's Customer
Service Department for help.
Customer Service Toll Free: [phone]
Customer Service Phone: [phone]
Customer Service Fax: [phone]
Customer Service Email: [e-mail]
Please record the following information for use if you need to contact Iris Technology for servicing of the
unit.
QuietPower Inverter Serial #: ___________________________
Place of purchase: ___________________________
Date of purchase: ___________________________
Contract reference ___________________________
2.1 QuietPower Inverter Key Features
The QuietPower Inverter utilizes advanced high frequency switching technology in the power conversion
process. The circuits are similar to those used in power supplies for computers and other electronic
equipment. This technology offers several benefits:
·Light weight: for easy installation
·Totally silent: for quiet operation
·High surge capability: for ‘hard-to-start” AC loads
See Section 10 Specifications, for complete product specifications.
2.1.1. Inverter Function
When connected properly and the power switch is turned to the ‘|’ position, the QuietPower Inverter
draws power from a battery and delivers a true sine wave AC output voltage that is similar to the voltage
supplied by your local utility. As long as the battery voltage is within the operating range of the unit, the
QuietPower will continue to deliver AC power to the loads connected. High and low battery shutdowns
will engage if the battery voltage falls out of the specified range of operation (20-32 VDC).

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 6
2.1.2 Control Panel
The Control Panel provides ‘0/|’(Off/On) control and displays operating information so you can monitor
the status of the Inverter and your batteries.
This panel can be removed and re-attached in different orientations so the display information is directed
at you in the most convenient fashion, for all recommended mounting configurations.
3 Installation
This section contains instructions for installing the QuietPower Inverter. After securing the unit and
making wiring connections, do not turn the unit on.
Proceed to the next section of the manual which provides operating instructions.
3.1 Requirements for Installation
What You Need to Install the QuietPower Inverter
You need the following tools and hardware to properly install the QuietPower Inverter:
·Wrench for DC terminals (½” or 13 mm)
·Wrench for Vibration Isolators (optional use)
·DC cables (supplied as PN 287A106)
3.2 Locating the QuietPower Inverter
The QuietPower Inverter utilizes complex electronic circuits and although design precautions have been
made for protection of these circuits, they can be susceptible to damage from use in extreme
environments. The QuietPower Inverter should only be installed in a location that meets the following
requirements:
·Dry: do not allow water or other fluids to drip or splash on the QuietPower Inverter. Do not mount the
QuietPower Inverter in an area subject to splashing or dripping water or bilge.
·Cool: normal ambient air temperature should be between 0°C (32°F) and 25°C (77°F) - the cooler the
better within this range. Refer to the operating temperature information in the specifications section
of this manual.
·Ventilated: allow at least 5 inches (13 cm) of clearance all around the unit. Ensure that the ventilation
openings on the unit are not obstructed. If mounting in a compartment, ventilate with louvers or cut-
outs.
·Safe: do not install the QuietPower Inverter in the same compartment as batteries or in any
compartment capable of storing flammable liquids such as gasoline. Do not install the QuietPower
Inverter in an engine compartment or other location where ignition protected equipment is required.
·Dust-free: do not install the QuietPower Inverter in a dusty environment where either dust, wood
particles or other filings/shavings are present. These can be pulled into the unit when the cooling fan
is operating.
·Close to AC junction box: avoid the use of extended wire lengths if possible.
·Close to battery/batteries: Avoid excessive cable lengths but do not install the QuietPower Inverter in
the same compartment as batteries. Use the recommended wire lengths and sizes (see section
3.4.4). Also do not mount the QuietPower Inverter where it will be exposed to the gases produced by
the battery. These gases are very corrosive and prolonged exposure will damage the QuietPower
Inverter.
·Protected from battery acid: Never allow battery acid to drip on the QuietPower Inverter or its wiring
when reading specific gravity or filling the battery.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 7
3.3 Mounting the QuietPower Inverter
Before mounting the QuietPower Inverter, test the chosen location for adequate space around the unit to
allow for connections and ventilation. Mounting hardware should be corrosion resistant and ¼” or 6 mm
diameter screws. Your mounting system should be able to support three times the weight of the
QuietPower Inverter, which weighs approximately 16 pounds (7.3Kg). The more clearance for ventilation
around the unit, the better the performance. At a minimum, have 5” of free space on all sides of the
inverter. For your convenience, four (4) Neoprene Cylindrical Sandwich Mount Vibration Isolators and
attachment hardware are provided for shock mounting.
To mount the QuietPower Inverter
Mount the QuietPower Inverter on either a horizontal or vertical surface (such as a bulkhead) using the
mounting holes provided. For secure, permanent mounting, use all eight mounting holes. Optionally, use
four shock mounts provided. To meet regulatory requirements, the QuietPower Inverter must be mounted
in one of the three orientations shown in Figure 1 below.
Remove and re-attach the front panel depending on
the orientation of the base unit itself. For example, if
the unit is mounted on a vertical surface, you may
want to remove the panel and attach it so it is again
readable horizontally. This can be done as depicted
in Figure 2, below, by removing the 4 screws, taking
the panel out of the housing, rotating the panel and
reattaching the panel to the base unit. Be sure to re-
install all four screws.
Figure 1. Approved Orientations for
Inverter Mounting.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 8
3.4 Wiring the QuietPower Inverter
Once your DC connections and ground wiring connection
are complete, the unit is ready to deliver AC power via the
front outlet.
3.4.1 Making DC Wiring Connections
The cables supplied with the QuietPower Inverter System
are approximately 12 feet long and are fabricated from 2/0
AWG multi-strand flexible cables. They are terminated with
a NATO SLAVE Plug at one end and two (2) lug terminals
which connect to the Inverter.
Before making connections, route the positive and negative
battery cables directly to the DC connection terminals on
the QuietPower Inverter. Slide the plastic terminal
connector covers (boots) over the positive and negative
cables (the red boot slides on the positive cable and the
black boot slides on the negative cable). Do not route the
cables through a distribution panel, battery isolator, or other
device that will add additional voltage drops.
3.4.2 DC Grounding
The QuietPower Inverter has a lug on the rear panel labeled Chassis Ground. This lug is used to connect
the chassis of the QuietPower Inverter to your DC ground as is required by regulations for some
installations.
4 QuietPower Inverter Operation
This section details how the unit functions as an inverter, provides information on the control panel, and
describes operating limits for inverter operation.
4.1. Principles of Operation
The QuietPower Inverter converts power from the batteries in two stages. The first stage is a DC-to-DC
converter, used to raise the low voltage DC input to high voltage DC. The second stage is the actual
inverter stage, taking the high voltage DC and converting it to a precise, true sine wave AC output.
The DC-to-DC converter stage uses modern high frequency power conversion technology that eliminates
the bulky, low frequency (50/60 Hz) based transformers found in inverters using older technology. The
inverter stage uses advanced power semiconductors that provide excellent overload capabilities.
4.2 Output Waveform
The AC output waveform of the QuietPower Inverter is a “true sine wave” with typically 1% Total
Harmonic Distortion (THD). Figure 3 illustrates the output waveform from the QuietPower Inverter. This
waveform is nearly identical to your utility-supplied power and in some cases where utility power is poor,
the QuietPower Inverter delivers cleaner, more precise AC power.
Figure 2. Control Panel Attachment.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 9
There are many advantages of true sine
wave over other wave forms delivered by
other inverters:
• AC powered equipment is
designed to operate with true sine wave.
Many loads will perform better when
connected to the QuietPower Inverter.
• motor loads start easier
• reduced stress on surge
protection circuitry within the equipment
means potentially longer equipment life
Many advantages of true sine wave are
also due to the absence of the sharp-
rising edges of waveforms prevalent in
either modified sine wave or square wave
inverters. Some of these advantages are:
• reduced interference in audio or electronic equipment, especially those that use less complex
internal power supplies
• significantly reduced in-rush current into capacitive loads and reduced stress on the output
devices of the inverter, potentially lengthening equipment life
• motor loads generally operate cooler and quieter without the extra harmonic distortion generated
by a modified sine wave
4.3 Control Panel
Once the QuietPower Inverter is properly installed and connected to batteries, it is ready to begin
delivering AC power to your loads. The control panel is the interface between you and the inverter. This
section describes the features of this panel and is followed by other sections that contain inverter
operating information.
1. INVERTER 0/|: this switch turns the QuietPower Inverter ON (‘|’). It is also used to enable or
disable POWERSAVE mode during the power-up sequence.
2. LIQUID CRYSTAL DISPLAY (LCD)
DISPLAY: displays input current from the battery and battery voltage numerically. A multi-segment bar
graph displays actual output power in watts from the inverter when a load is being operated
3. MULTI-POSITION MOUNT: the control panel is designed so it can be removed and re-attached
to the chassis in 90 degree increments depending on the mounting orientation of the inverter itself. The
panel can also be removed entirely from the unit and mounted remotely, with the purchase of the optional
QuietPower Interface Panel.
4. FAULT CONDITION DISPLAY: should a fault occur, the error will immediately be displayed. An
audible alarm sounds and the back-lighting of the display will flash to draw attention to the fault condition
(see Section 6.1)
To operate the QuietPower Inverter:
Turn the unit ON by moving the rocker switch on the control panel to ‘|’ position. The following
information will be displayed (upon each power-up), identifying the type and configuration of your
QuietPower:
-200
-150
-100
-50
0
50
100
150
200
0 5 10 15 20 25 30 35 40
Time (ms)
Output (volts)
169.7 V Peak
Figure 3. QuietPower Inverter True Sine Wave Output.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 10
·QuietPower model number (1800 watt)
·Input Voltage, Output Voltage and Frequency configuration
·POWERSAVE mode OFF (factory set default)
Following the display of this information, the control panel then defaults to the standard display
information of input voltage, input current and output power. When a load is connected, the output power
(watts) is displayed in bar-graph form.
Once the standard display screen is shown, the QuietPower Inverter is ready to deliver AC power to your
loads. You can now plug in a load to the front outlet of the unit. The loads should operate from the
inverter as they would from utility power. Section 4.5 explains the operating limits for the QuietPower
Inverter.
4.4 QuietPower POWERSAVE Mode
Your QuietPower Inverter has a function mode called POWERSAVE. This “sleep” mode shuts off much
of the power control circuitry of the QuietPower Inverter as well as the display back-lighting, reducing the
standby current draw considerably. With this mode enabled, the unit draws approximately 1.5 watts while
powered up but with no load on the inverter. The QuietPower Inverter detects the presence of a load by
sending out pulses approximately once every 2.5 seconds. Full output power is available with the
detection of a load. The unit will remain in POWERSAVE mode if the load it detects is less than 10W for
the QuietPower 1000 and less than 20W for the QuietPower 1800. This is a factory set search mode
setting and cannot be changed.
You would want to enable POWERSAVE mode if the inverter is only being used periodically to power
loads. This allows the inverter to draw less power from the batteries during non-use periods. If the
inverter is being used frequently and your batteries are being recharged during inverter use (e.g. vehicle
alternator), or soon after inverter use, you can leave POWERSAVE disabled.
Your QuietPower is factory default set to POWERSAVE OFF. To enable the POWERSAVE mode, follow
these steps:
I) Turn the Control Panel switch to ‘0’ position
2) Switch the unit back to ‘|’ position. You will see the power-up information being displayed as
described previously (model number and voltage/frequency configuration)
3) When the Control Panel displays “POWERSAVE OFF” turn the switch to ‘0’ position, wait for
approximately 3 seconds, and then turn the switch back to ‘|’ position again. “POWERSAVE ON” will
now be displayed during the start-up sequence and when the normal state display appears, a small
pointer will be visible, indicating POWERSAVE mode is enabled. Follow the same procedure for
disabling POWERSAVE mode.
4.5 Inverter Operating Limits and Protection Features
Power Output: The QuietPower 1800 delivers 1800 watts continuously. The following table displays the
continuous and peak current ratings as well as surge rating:
Table 1. Operating Limitations.
Model Continuous AC Output
Current Rating
Peak AC Output Current
Rating
Surge Rating (max. watts delivered
for 5 seconds)
QP-1800 15A 45A 2900W
The unit above will be able to operate all AC loads rated at or below these power ratings. Some high
horsepower induction motors used in pumps and other motor-operated equipment require very high surge
currents to start and the QuietPower Inverter battery combination may have difficulty starting these loads.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 11
If you have problems with certain loads, ensure that battery connections are solid, your DC cables are
appropriately sized, and that the battery is of sufficient capacity and fully charged.
Input Voltage: The QuietPower Inverter operates from an input voltage ranging from 20 to 32 VDC.
Peak performance for these inverters occurs when DC input voltage is in the range of 24 volts to 30 volts
for 24V models. The QuietPower Inverter will indicate high and low DC voltage conditions as follows:
Table 2. System Trip Voltages.
Model DC Input
Over Voltage
Alarm
DC Input
Over Voltage
Shut-down
DC Input
Under Voltage
Alarm
DC Input
Under Voltage
Shut-down
QP-1800 31.6 VDC 32.0 VDC 21.0 VDC 20.0 VDC
The over-voltage protection and shutdown protects the inverter against excessive in put voltage, should
the unit be connected to a higher voltage than it is designed for (up to 35 VDC - higher voltages may
cause damage). Low input voltage shutdown protects your battery from being over-discharged. The
QuietPower Inverter requires a manual reset to re-start after shutdown from either high or low input
voltage. Turn the power switch to ‘0’ and then back to ‘|’ to re-start the unit.
Output Overload Protection: A short circuit may be applied to the output continuously without damage to
any internal components. The QuietPower Inverter will shutdown in less than five seconds when the
output falls 10% below the nominal voltage as a result of current limiting.
Input Reverse Polarity Protection: the internal circuitry of the QuietPower Inverter is protected by an
internal, 32V, fast-blow fuse. This fuse is only replaceable by qualified service personnel. In many
reverse polarity conditions, this fuse will protect internal circuits, however, certain high voltage/current
situations may cause internal damage.
5 Testing
The following simple test procedure should ensure that the QuietPower Inverter is connected and
installed properly.
To test the QuietPower Inverter:
1. Double check all wiring terminals on the inverter to observe correct polarity and secure connections.
2. Turn rocker switch to ‘I’ position.
3. Observe the power-up sequence on the display. The normal-state inverter display of input current
and input voltage should come up.
4. Plug a test load (e.g. a light bulb) into the outlet of the QuietPower Inverter. The load should function
normally. Observe the output power bar graph - it should increase with load demand,
5. Repeat Test 4 with the QuietPower in “Powersave” mode.
6. The QuietPower Inverter is now ready for operation

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 12
6 Troubleshooting Guide
This section describes potential installation and configuration problems and solutions, including fault
conditions and indicators. More information is found in the Technical Addendum and on our web site.
6.1 Fault Conditions and Indicators
The following fault conditions are displayed on the control panel along with an alarm sound and blinking
LCD back-light.
Table 3. Fault Indicators.
Control Panel Indication Fault Condition Solution
HIGH BATT SHUTDOWN Battery voltage too high Check for fault with battery charging
system. Manually reset inverter by
turning switch to ‘0’ then to ‘|’ again.
LOW BATT SHUTDOWN Battery voltage too low Charge battery. Manually reset
inverter by turning switch to ‘0’ then
to ‘|’ again.
OVERLOAD SHUTDOWN Battery current too high, probable AC
overload
Reduce load on the inverter.
OVERTEMP SHUTDOWN System over-temperature Improve ventilation and cooling
and/or reduce load on the inverter.
SYSTEM SHUTDOWN
PS_FAULT SHUTDOWN
DC-DC SHUTDOWN
Overload or system hardware fault Ensure all loads are disconnected.
Try to reset the unit by switching to
‘0’ and then to ‘|’. If unit still does
not operate, Contact Iris Technology
for service warranty replacement.
The table below provides some troubleshooting tips:
Table 4. Troubleshooting Tips.
Problem and symptoms Possible Cause Solution
No output voltage and control
panel reading 20.4 VDC or lower
Low input voltage shutdown Recharge battery, check
connections and cable
No output voltage, no voltage
indication.
Inverter switched to ‘0’
No battery power to inverter
Reverse DC polarity connection -
internal fuse open
Turn Inverter power switch to ‘I’
Check wiring to inverter.
No output voltage and control
panel reading 32.0 VDC or higher
High input voltage shutdown Make sure that the inverter is
connected to correct battery
voltage, check regulation of
charging system.
Low battery warning on all the
time, voltage indicator below 22.0
VDC
Poor DC wiring, poor battery
condition
Use proper cable and make solid
connections.
Charge battery or use new
battery.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 13
7 Warranty
Iris Technology manufactures its products from parts and components that are new or equivalent to new
in accordance with industry-standard practices. Iris Technology warrants the QuietPower Inverter to be
free from defects in workmanship or materials for 24 months from the date of purchase. Proof of
purchase is required for warranty service. During the warranty period, Iris Technology will, at its option,
repair or replace the defective product free of charge. This warranty will be considered void if the unit has
suffered any physical damage or alteration, either internally or externally, and does not cover damage
arising from improper use or from use in an unsuitable environment. This warranty will be considered
void where the product has been misused, neglected, improperly installed, or repaired or modified by
anyone other than Iris Technology , without prior authorization by Iris Technology.
Repair or replacement are your sole remedies and Iris Technology shall not be liable for damages,
whether direct, incidental, special, or consequential, even though caused by negligence or fault.
Iris Technology owns all parts removed from repaired products. Iris Technology uses new and
reconditioned parts made by various manufacturers in performing warranty repairs and building
replacement products. If Iris Technology repairs or replaces a product, its warranty term is 90 days or the
balance of the original warranty, whichever is longer.
This is Iris Technology’s only warranty, and the Company makes no warranties, express or implied,
including warranties of merchantability and fitness for a particular purpose.
8 Warranty Service
If your QuietPower Inverter requires service, please return it Iris Technology directly:
Phone: [phone]
Toll Free [phone]
Fax: [phone]
Email [e-mail]
Iris Technology Corporation
17175 Von Karman Avenue, Suite 104
Irvine, CA 92614-0904, USA
You must obtain a Return Authorization Number from Iris Technology before returning the QuietPower
Inverter directly to Iris Technology. Do not return the QuietPower Inverter to Iris Technology without first
obtaining a Return Authorization Number. When you contact Iris Technology to obtain service, be
prepared to supply the serial number of your QuietPower Inverter.
If you are returning the unit from the USA, follow this procedure:
1. Obtain a Return Authorization Number from Iris Technology.
2. Package the unit safely, preferably using the original box and packing materials. Include the Return
Authorization Number, a return address where the repaired unit can be shipped, a contact telephone
number, and a brief description of the problem.
3. Ship the unit to Iris Technology, freight prepaid:
If you are returning the unit from outside the USA, please contact the place of purchase or the local Iris
Technology dealer in your country.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 14
9 Battery Information
9.1 Battery Type
This appendix explains some of the differences between the different lead-acid batteries to help you
choose a battery which best suits your needs.
The lead-acid battery which is probably most common is the starting battery in your automobile. An
automotive starting battery is designed to deliver a large amount of current for a short period of time (so it
can start your engine). Only a small portion of the battery’s capacity is used when starting the engine and
it is quickly recharged by the running engine. It is not designed for repeated charge-discharge cycles
where the battery is almost completely discharged and then recharged. Starting batteries used in this
kind of deep discharge service will wear out rapidly.
Your QuietPower Inverter is designed to be used with DEEP CYCLE lead acid batteries. These batteries
are designed for deep discharge service where they will be repeatedly charged and discharged. This
type of battery is often labeled as a marine, recreational vehicle, or golf cart battery. Iris Technology
recommends you use one or more of these batteries separated from the starting battery of your vehicle or
boat with a battery isolator.
The many different types of deep cycle lead acid batteries can be grouped into four categories: flooded
(or wet), sealed flooded (“maintenance free”), recombinant flooded (often “starved electrolyte”), and gel
batteries. The table that follows summarizes these battery types, identifying features, advantages and
disadvantages.
Note – for the following list:
• SUPERIOR™, PACER™ are registered trademarks of TROJAN BATTERY COMPANY
• SEAVOLT™, SEAGEL™ are registered trademarks of WEST MARINE PRODUCTS
• VOYAGER™ is a registered trademark of DELCO-REMY.
• GENESIS™ is a registered trademark of GATES ENERGY PRODUCTS (HAWKER ENERGY)
• EVOLYTE™, SUNLYTE™, STOWAWAY™, ACTIONPAC™ are registered trademarks of GNB
INDUSTRIAL BATTERY COMPANY
• PREVAILER™ is a registered trademark of SONNENSCHEIN
• DYNASTY™ is a registered trademark of JOHNSON CONTROLS, INC. BATTERY DIVISION
FLOODED BATTERIES:
TROJAN: Golf Cart, SUPERIOR™, PACER™
WEST MARINE: SEAVOLT™
MOTOMASTER: Nautilus
IDENTIFYING FEATURES: Vents which can be removed to fill the battery with water. Low
price and higher maintenance.
ADVANTAGES: More resistant to over-charging since they can be filled with
water. Cheaper than other batteries.
DISADVANTAGES: Must be filled with distilled water and usually require
equalization. Maintenance required.
SEALED FLOODED BATTERIES:
DELCO: VOYAGER™
IDENTIFYING FEATURES: Vents which look like they are removable but are not. Sold as
“Maintenance Free” at attractive prices.
ADVANTAGES: Less maintenance required than Flooded. No need to fill with
water. Less expensive.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 15
DISADVANTAGES: Less resistant to over-charging because they consume water but
cannot be refilled.
RECOMBINANT FLOODED (SEALED) BATTERIES:
HAWKER ENERGY: GENESIS™
OPTIMA: Yellow Top
GNB INDUSTRIAL: EVOLYTE™
IDENTIFYING FEATURES: Vents are often concealed. Sold using the following phrases:
Recombinant, Valve Regulated, Maintenance Free, Starved
Electrolyte.
ADVANTAGES: Require no maintenance. Non-spillable.
DISADVANTAGES: Can be damaged by equalization. Generally more expensive.
GEL SEALED BATTERIES:
SONNENSCHEIN: PREVAILER™
WEST MARINE: SEAGEL™
IDENTIFYING FEATURES: Sold as either “Gel” or “Gelled Electrolyte” batteries.
ADVANTAGES: Require no maintenance. Often can be used on their side. Non-
spillable. Low self-discharge. Less damage from being left
discharged.
DISADVANTAGES: Damaged by equalization. Generally more expensive.
9.2. Battery Size
Just as important as the type of battery selected for use with your QuietPower Inverter is the subject of
battery size or capacity. Unfortunately, there are a number of different standards for rating battery energy
storage capacity. Automotive starting batteries are normally rated by cranking amps. This is not a
relevant rating for continuous use. Deep cycle batteries are rated either by reserve capacity in minutes or
by amp-hours. Battery reserve capacity is a measure of how long a battery can deliver a certain amount
of current - usually 25 amps. For example, a battery with a reserve capacity of 180 minutes can deliver
25 amps for 180 minutes before it is completely discharged. Amp-hour capacity is a measure of how
many amps a battery can deliver for a specified length of time - usually 20 hours. For example, a typical
marine or RV battery rated for 100 amp-hours can deliver 5 amps for 20 hours. (5 amps * 20 hours = 100
amp-hours).
The batteries are a very important part of your system, so we recommend you purchase as much battery
capacity as possible. A large battery will extend running time and ensure your QuietPower Inverter
delivers full rated surge.
You can expect performance from the inverter to suffer with the use of a small, low amp-hour rated
battery (e.g. 5O Ah). Even if your battery is in excellent shape and fully charged you will likely experience
poor surge power performance and unsatisfactory operating time with anything but a small AC load. Iris
Technology recommends a minimum battery size of 200 Ah for moderate loads (< 1000 W) and greater
than 400 Ah for heavy loads.
To determine how large a battery or battery bank you require for equipment running from the inverter,
simply add together the power requirements for all electrical devices that you will be running multiplied by
their approximate running times in hours between battery recharges. Each device will be rated in either
watts, volts and amps, or VA. For this calculation, all three of these ratings are equivalent (i.e. volts *
amps = watts = VA). The following example, based on battery recharging every three days, illustrates the
calculation:

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 16
Table 5. Sample Operating Time Calculation.
Load Power
Consumption
Operating time (cumulative
usage between recharges)
Watt-hours (power
consumption * operating time)
TV & VCR 115 watts 3 hours (1 hour per day) 345
Coffee Maker 750 watts 1 hour (20 min per day) 750
Microwave Oven 800 watts 0.5 hour(10 min per day) 400
TOTAL 1495
Convert the watt-hours to amp-hours by dividing total watt-hours by 10: 30°C (86°F)
1495 watt hours / 10 = 149.5 amp-hours
A 150 amp-hour battery is required to supply enough power for the above loads, and become completely
discharged. Ideally, you normally want to discharge your battery to only 50% capacity, so for the above
loads, you would require 300 amp-hours of battery capacity.
When sizing your battery, be generous. More capacity is better since you will have more reserve
capacity, and your battery won’t be discharged as deeply. Battery life is directly dependent on how
deeply the battery is discharged. The deeper the discharge, the shorter the battery life.
As your power requirements increase, to obtain sufficient battery capacity, you may need to use more
than one battery. Two identical batteries can be connected positive to positive and negative to negative
in a parallel system that doubles the capacity and maintains the voltage of a single battery. It is not
recommended to connect batteries from different manufacturers or with different amp-hour ratings or with
different battery electrolytes in parallel. Decreased battery life may result.
10. Performance Graphs and Specifications
10.1. Power Derating Curve
As with all inverters, the amount of continuous power that the QuietPower Inverters can deliver without
overheating is limited by ambient (surrounding air) temperature. The nominal temperature for the power
ratings specified for the QuietPower Inverters is 25°C (77°F). They will operate and deliver their
continuous power ratings at higher temperatures, but the extent to which they can do this is limited by the
ambient temperature as well as the input voltage from battery. The following “Power Derating Curve vs.
Temperature” illustrates the relationship between power output and ambient temperature.
The rated power output of the QP-1800 inverter is 1800W up to 25°C ( 77°F). Operating the unit above
this temperature will result in thermal shutdown or decreased performance. At input voltages less than
24V, the unit runs warmer which will cause thermal shutdowns at temperatures below these ambient
temperature guidelines.
Operating the unit in conditions outside the power and temperature limits (“above” and “to-the-right” of the
derating curves) will result in thermal shutdown and/or significantly decreased performance. In addition,
operation in this range is outside of the ratings covered by the product’s regulatory approvals.
These curves are published for information purposes only to let you know what may happen while
operating in high ambient temperature conditions. Under normal battery voltage conditions and non-
extreme temperatures, inverter operation will be within the derating curve.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 17
10.2. Efficiency Curve
The efficiency rating of the QuietPower inverter indicates what percentage of DC power is converted to
usable AC power at given power output levels. The higher the rating, the less power is lost in the way of
heat from the inverting process. QuietPower Inverters have an extremely flat efficiency curve over much
of their operating range so less battery power is wasted, whether operating at low power levels or higher
power levels.
Efficiency (%) and Heat Dissipation (W)
80
81
82
83
84
85
86
87
88
89
90
0 200 400 600 800 1000 1200 1400 1600 1800
Output Power (W)
Efficiency (%)
0
50
100
150
200
250
300
Heat Dissipation (W)
Figure 5. Efficiency (%) and Heat Dissipation (W).
Output Power (W)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 102030405060
Ambient Temperature (C)
Output Power (W)
Figure 4. Output Power (W) Derating Curve.

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 18
11 System Components
PN 287A107
QuietPower 1800 Inverter System
Includes:
PN 287A101
QuietPower 1800 Inverter
1800 Watts (115 VAC, 60 Hz)
PN 287A106
NATO SLAVE Cable
2/0 AWG Flexible

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 19
QP-1800
QuietPower
Inverter System
Product QP-1800 System
Iris Part Number(s)
System 287.A107
Inverter 287.A101
Cabling 287.A106
Continuous Power 1800 W
Surge Power 2900 W
Peak Efficiency 90 %
No Load Current Draw < 0.92 A
Output Frequency 60 Hz ±0.05 %
crystal controlled
Output Waveform True Sine Wave
< 3 % THD
Input Voltage Range 20 - 32 VDC
Output Voltage 120 VAC RMS -10 / +4 %
Input DC Connection Two 5/16" Posts
for Ring Lugs
Output AC Connection Dual Receptacles with GFCI
Supplied Cabling 2/0 AWG Flexible
with NATO SLAVE Plug
Weight Inverter 16.5 lbs (7500 g)
Cabling 18.0 lbs (8200 g)
Length x Width x Height 15.4 x 11.0 x 4.5 in
(390 x 280 x 115 mm)
Operating Temperature 0 / +60 °C
(+32 / +140 °F)
Storage Temperature -30 / +70 °C
(-22 / +158 °F)
Warranty 12 Months
CAGE 78535
Iris Technology Corporation
17175 Von Karman Avenue
Suite 104, Irvine, CA 92614-0904
949.975.8410 tel / 949.975.8498 fax
Revised 20 SEP 01

QuietPower 1800 Inverter Owner’s Manual Rev 15 OCT 01 Page 20
11. Appendix A. Technical Addendum.
Equipment Runtime
We have heard questions about a “short” operating runtime with this equipment. In field tests at Camp
Pendleton, we measured and verified conversion efficiency of the QP-1800 to be approximately 90%, well
within specifications. The QuietPower 1800 equipment, by its very design, can demand a large current
drain from the vehicle electrical system (75 to 90 Amperes depending upon battery voltage and load). A
high conversion efficiency means that it is not the cause for wasted energy.
We then inspected the HMMWV vehicle batteries and observed loose and corroded battery connections,
measured batteries to be “weak” or “dead”, and have seen low outputs from vehicle alternators. It is not
adequate to measure the voltage across the vehicle batteries in an unloaded condition. Lead acid
batteries recover to relatively high voltages even if they are weak or damaged. It is important to measure
the holding voltage across these batteries while loaded and typical battery testers do that.
To operate effectively, all connections within the vehicle electrical system must be clean and very secure.
The battery health is critical, too. In speaking with Exide, the manufacturer of the 6TL and 6TMF
batteries, the rated value is 100 Ampere-Hours (AH). That is to say that a 20 Ampere load should run for
5 hours (20 A x 5 H = 100 AH). This is a temperature dependent parameter, too, and Runtime v Load
data is provided below for varying temperatures.
Exide 6TL & 6TMF Runtime to Cutoff @ 10 VDC
0.1
1
10
100
1 10 100 1000
Amps
Hours
+80F
+32F
0F
-25F
-40F
-65F