LR4A
User Guide
Table of Contents
Safety Notes
Page 2
Flash Controls
Page 3
Before Operating
Page 4
Basic Operation
Page 4 - 5
Change Fuse
Page 5
Install or Replace Modeling Light
Page 5
Line Drawing
Page 6
Tech Specs
Page 7
LR4A User Guide June 01, 2010
Lightrein
2
Thank You for your Lightrein Purchase
Thank you for choosing Lightrein. We hope you will be very pleased with your new Lightrein
purchase.
We have chosen to carry this analog flash because its professional features will help you
craft great images. Lightrein flashes are just one component of our comprehensive studio
offering. We also carry a large variety of softboxes, Lighttools® world-famous Soft Egg
Crates® and other light modifying accessories that will allow you to set your image apart
from the rest.
Lightrein prides itself on providing Canadian photographers prompt accurate advice,
extensive warranty support and timely service.
All of our flashes are CSA approved and come with a 3 year Canadian Warranty, and our
documentation is designed to get you up and running as quickly as possible.
So, get ready to have some fun and create some exceptional images!
The Lightrein Team
Safety Notes
This product has a high electric voltage. To avoid an electric shock, always use a properly
grounded receptacle and cord. Do not use this product in excessive moisture, or with wet
hands - Indoor Use Only.
During normal operation, the bulbs become quite hot, and care should be exercised when
handling the unit, or changing the attachments.
Always operate the unit with the protective pyrex cover in place. When transporting or
storing the unit, remove any accessories such as barn doors or reflectors and cover the bulb
with the black plastic protective cover.
When replacing the soft boxes, or using accessories such as snoots, barn doors and
reflectors, always make sure the power switch is in the OFF position.
Lightrein will not be held responsible for electric shock, or equipment damages, due to
modification or repair by other unauthorized dealers. Please contact our Service Repair
Center for repairs. For any other inquires, contact Lightrein, Inc. info@lightrein.ca
LR4A User Guide June 01, 2010
Lightrein
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Flash Controls
The list below briefly identifies the function of the
controls on the back panel of the LR4A. Refer to
your LR4A or this picture while reviewing the
functionality of each controller.
Input / Fuse
Power Cord Connection with fuse holder (250V/10A)
Sync
Sync socket for sync cord or 3rd party flash trigger
Power
ON/OFF Switch
Receiver
Holder
Located at the top of the back panel
Remove protective cover
Insert receiver of Lightrein dedicated LR Flash Trigger
System (sold separately)
Prop
Depress to turn proportional lighting ON (green light)
A proportional setting will balance the percentage of
model light intensity to the percentage of flash intensity
This will override setting on Model Light analog dial
Cell
Depress to turn Photo Cell On (green light)
Sound
Depress to activate audible “Flash Ready” sound (green light)
Test
Depress button to Test Fire Flash
Illuminated Blue Light Indicates that Flash is Ready to
fire
Model
Adjust analog dial to set Model Light Intensity
Flash
Adjust analog dial to set Flash Light Intensity
LR4A User Guide June 01, 2010
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Before Operating
1. Install modeling light (see page 5).
2. Ensure all switches and regulators are powered OFF, or in the minimum position.
3. Connect the Power cord to the Power socket.
4. Connect the Sync cord to the Sync socket (unless you are using a flash trigger or the
photocell).
Basic Operation
1. Set ON/OFF Switch to the ON position to power up the strobe. The TEST light will
illuminate to indicate that the flash is ready to fire.
2. Push the control buttons to activate/deactivate the functions listed below:
Function
Description
Test
Depress Test button to test fire the Flash, as needed
Sound
Depress Sound button to activate the audible alert – this
will let you know when the Flash has recycled and is ready
to fire again
“Flash Ready” is also indicated by the TEST “blue light”
indicator coming back on
Cell
Depress Cell button to activate photo cell
The Photo Cell is located on the top rear of the strobe
It is either ON or OFF
When turned ON, this strobe can be fired by the flash of
another strobe
Prop
Depress Prop button to activate proportional lighting
This will balance the percentage of model light intensity to
the percentage of flash intensity
Once activated, the rotary dial for the model light will
remain in its last position and adjusting it will have no affect
while Prop is set to ON
LR4A User Guide June 01, 2010
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3. Adjust the intensity of the Model Light to your desired power level using the analog dial
From Full power to Off
4. Adjust the intensity of the Flash to your desired power level using the analog dial
From Full power to 1/24 power (400 WS to 18 WS)
5. Before shutting off power, adjust modeling light and flash to “Minimum” settings – this will
enhance the life of your strobe.
Change Fuse
1. Locate the fuse compartment just below the power
plug outlet.
2. Pry open the fuse compartment with a small
screwdriver, as shown in the picture.
3. Replace burned fuse with
a 250 volt, 10 amp CSA approved fuse.
Flash is supplied with a spare fuse in the fuse holder.
Install or Replace Modeling Light
1. Remove protective black plastic cover from flash
housing.
2. Remove clear pyrex cover using a soft cloth or tissue
paper to avoid leaving finger prints on cover.
3. Install modeling light as shown in picture – using a soft
cloth or tissue paper once again.
a. Gently push/wiggle modeling light fully into the
two horizontal receptacles in the middle of the
flash housing.
4. Replace pyrex cover.
LR4A User Guide June 01, 2010
Lightrein
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Line Drawing
1- Protective Pyrex Cover
2- Modeling Lamp
3- Flash Tube
4- Modeling Lamp Socket
5- Umbrella Holder
6- Mount Release Button
7- Photo Cell
8- Power Inlet /Fuse Holder
9- Dial for Modeling Light
10- Receiver Holder
11- Dial for Flash
12- Sync Cord Socket
13- Proportional Modeling
Light On/Off
14- Photo Cell On/Off
15- Audible Alert On/Off
16- Test Fire Flash
17- Mounting Bracket
18- Power On/Off
LR4A User Guide June 01, 2010
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Tech Specs
LR4A (RS1) Specs
Max Power
400 Ws
Min Power
18 Ws
F-stop Range
4.5 Color Temperature
5500 (+ or – 200)
Flash Duration
1/2300
Recycle Time
0.1 – 2.1 sec
Flash Monitoring
Audible & Visual
Circuit Protection
250V T10AL
Cooling Fan
Yes
Flash Release
Photocell – Sync – Test Button – Radio Slave
Photocell ON/OFF
Yes
Modeling Light
ON/OFF – Free – Proportional
Dimensions
37.5 x 12.1 x 21.6 cm
14.75 x 4.75 x 8.5 in
Weight
2.6 kg / 5.5 lbs
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