Navtec NRS3i01 User manual

NRS3 01i
User Manual
Wireless Refrigerant Scale
SAVE THIS MANUAL
FOR FUTURE REFERENCE
www.navtek.uk
www.navtek.ie
Made in China

NRS3i01 is a wireless smart e-Scale that is supported by NAVTEK’s advanced technology and
all new design concepts. Its primary use is for installation and maintenance of HVAC systems,
to set exact refrigerant weights for charging systems, and when recovering refrigerant from
existing systems, and issue warning alerts when finished. It is approved and has FCC, IC and
RED certifications.
The product was designed primarily from the perspective of the service technician. It is a
magnesium alloy cast scale plate design, and the storage case makes it light and easy for users
to carry. The hand-held scale keypad design makes it easy for users to both retrieve and store.
The internal storage compartment for remote keypad inside the scale provides better protection
and a longer life for the keypad device.
01
Model
Weighing Range
Resolution
Accuracy
Power source
Work environment
Scale dimensions
Weight
Wireless broadcast distance
NRS3i01
265lbs / 120kgs
0.3oz
0.05%
4×1.5V AA alkaline battery/ 4x1.5V AAA alkaline battery
14~104 ℉
12.6"x10.6"
10.4lbs (4.7kg)
32.8 feet, it recommended that normal weighing
within 16.4 feet, function operation within 9.8 feet
The manufacturer is not responsible for any radio or TV interference caused by unauthorized
modifications to this equipment. Such modifications could void the user authority to operate the
equipment.
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 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.
Note
Dear customers,
Thank you very much for your purchase of the completely new series of NAVTEK products.
For you better use of the product, please read carefully the user manual before use,
especially the parts labeled “Caution”.
When you have read the whole manual, we suggest that the manual should be properly kept,
together with the electronic refrigerant scale or at a place easy to access, for your future
consultation at use.
I. Product introduction
II. Functional parameters
III. Product description
IV. Operating instructions
V. Maintenance
VI. Attached list
1
1
1
3
9
9
I. Product introduction
II. Functional parameters
III. Product description
3.1 Graphic illustration
Weighing pan
Control pannel
Handheld controller
Battery compartment Carrying handle
Handheld
controller
compartment
Base

0302
3.2 LCD Display Screen Description
Hand-held device
Power level Numeral
display area Wireless signal display
Scale
Power Level
Recover symbol
Charge/recover
completion symbol Charge symbol Measurement unit area
IV. Operating instructions
4.1 Button function description
4.1.1 Hand held device buttons
Function description
Combo button: Numeric button 1 and Charge button.
Combo button: Numeric button 2 and Measurement unit switch button.
Combo button: Numeric button 3 and Back light On/Off button,
Automatically close after 30 seconds by default
Combo button: Numeric button 4 and Clear button.
Combo button: Numeric button 5 and Recover button.
Numeric button 6
Numeric button 7
Numeric button 8
Numeric button 0.
Shift button.
Combo button: Enter and Exit button.
Wireless synchronous communication key
LCD display
screen
Hook
Number pad.
Battery cover.
4.1.2 Scale buttons
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Button
Composite key: numeric key 9 and power ON/OFF key
(short press the key to turn it on and press it for 2seconds to turn it off)
Weighing scale power ON/OFF key
(short press to turn it on and press it for 2seconds to turn it off)
Note: The numeric buttons can only be used in Charge or Recover modes, the remaining are all
function buttons. Once successful matching is established, pressing down and hold on the
hand-held device power On/Off button will switch off both.

0504
4.2 Operating instructions for specific functions
4.2.1 Start-up mode
Hand-held and scale will be made by paired test before it leaves factory, firstly switch on hand held,
press the power key, It is successful linked while scale wireless connection indicator(blue light)
long bright, and meanwhile wireless signal indication and power displayed on the LCD screen. The
scale is on ordinary weighing mode at this situation.
(Note 1: The hand-held device will be automatically shut down after 5 minutes if it failed to connect
the pan; if connection succeeds, the scale will be closed automatically if the weight on the scale will
not change in 10 minutes; the actual weight will be displayed when the weight on the scale more
than 4.4Ibs as it re-started.
(Note 2: Overweight alarm prompt: if the goods being weighed is beyond the weighing range, the
beeper alarms. Please take down the goods immediately from the weighing pan.)
(Note 3: Please check if the code on the back of hand held in accordance with the code on back of
pan)
4.2.2 Measurement unit setting
With measurement unit setting, you can switch between Kg + g or Lb + oz units.
1. After switching on the hand-held device, the LCD display will be as follows (the default unit is kg
+g):
4.2.3 Back-light setting
You can select with or without the back-light, based on different conditions. The default setting is no
light. Press the button in order to switch on the light, and press it again to switch it off. The light
4.2.4 Clear setting
stays on for 30 seconds, after 30 seconds it will switch off automatically.
2. Depending on the different requirements, press the key, and the weighing unit will switch to
Lb + oz, which will be displayed as bellow:
Kg
g
In the standard weighing mode, pressing , the weight value of the item on the scale will be set to
zero.
The scale zeros off automatically and data display goes to “0” if weight on the scale is less than 4.4
lbs, or more than 4.4 lbs without making any changes to output with actual weight data.
Note:
While using the Clear program, ensure the vessel on the scale is in weight normal range, and the
weight does not exceed the measuring range of the scale.
4.2.5. Charge mode operation
The user can use this function to rapidly and safely add refrigerant to the system. After entering the
“Charge” mode, enter the charge value, and start charging. The minimum charge amount is 1.8
oz.
1. Switch on the scale.
2. Place the refrigerant container on the scale, and wait until the reading stabilizes, displaying
total weight of the container. For example, if the container’s total weight is 29Lb+15.7oz, the
display will be as follows:
3. Press and the LCD screen will display the “Charge” function sign. Then enter the net weight
of the refrigerant to be added, and after pressing the ENTER button , the net weight to be
charged will be displayed. For example, if you want to add 4lbs+6.5oz of refrigerant, first press ,
then enter “0-0-4-0-6-5” on the number pad based on the LCD flash figure, then press . The
following will be displayed.
Lb
oz
Lb
oz

Lb
oz
Note:
During the charge input entering process, if there is an input error need to be re-entered, you only
need to press the shift button , to move the flashing figure to the position of the figure to be
corrected. Re-enter the correct figure to complete the correction of the charging weight.
Charging default is 0 after hand held start-up, and press again “charge” will display the
measurement of the last charge. You can reset the charging weight at this time.
4.2.6. Recover mode operation
This function allows users to rapidly and safely recover refrigerant from the system. After entering
Recover mode, input the recover value to start recovery process. The recovery volume must be at
least 1.8 oz .
1. Switch on the scale.
2. Place the refrigerant container on the scale and wait until the reading stabilizes, displaying the
total weight of the container. For example, if the total weight of the container is 29 lbs+15.7oz, the
4. After entering Recover mode, of the recover symbol will begin to flash. When the
recover weight is down to 1.8oz left to go, the scale will begin to issue an alarm sound, and the
charge/recover completion symbol will begin to flash, telling the user that the recover is
about to finish. The display is as follows:
3. Press the recover button and the LCD screen will display the recover symbol. Enter the net
value you wish to recover, and press Enter . At this point the net weight of refrigerant
recovered to the container from the system will be displayed. For example, if you want to recover
4 lbs+6.5oz of refrigerant, first press the recover button , then enter “0-0-2” via the key pad in
accordance with the flashing number on the LCD display screen, before pressing . The display
will be as follows:
0706
4. After entering Charge mode, of the charge symbol will begin to flash. When the charge
volume is down to the last 1.8oz, the scale will begin to sound an alarm, and Charging/Recovery
Complete Sign will begin to flash, indicating to the user that charging is about to finish. The
following will be displayed:
5. When the charge weight reaches the set charge amount, charging is complete, then you will
manually terminate the system charging, and press and the alarm stops. At this point the LCD
screen will display the gross weight of the refrigerant container.
display will be as follows:
Lb
oz
Lb
oz
Lb
oz

0908
Note:
During the recover input entering process, if there is an input error need to be re-entered, you only
need to press the shift button , move the flashing figure to the position of the figure to be
corrected, re-enter the correct figure to complete the correction of the recover weight.
Firstly charging default is 0 after hand held start-up, and press again “recover” will be displayed the
measurement of the last recovery.
Warning:
The recovered refrigerant volume cannot exceed 80% of the total capacity of the refrigerant
container. This is extremely dangerous.
4.2.7 Bluetooth Synchronization Setup
If the handhold device or weight pan needs to be changed, it is needed to synchronize the
bluetooth,as follows,
1. First, short press Power key to start the weighing pan. The blue light for Bluetooth
indicator on the weighing scale starts flashing and wait for pairing;
2. When the handhold device is at off state,press , , , , in sequence, then the
handhold device enters sync program, the LCD shows , the alarm buzzes. The sync will be
done within 1 minutes, the LCD shows , the alarm buzzes for 2 seconds. Conserve the new
MAC address, the handhold device turns off automatically.
Note:
if the sync is not done within 1 minutes, the handhold device is out of sync program. Keep the
previous MAC address, and the handhold device turns off automatically.
4.2.8 Calibration
V. Maintenance
1) Only use a moist cloth and a small amount of cleaning fluid when cleaning the surface of the
e-scale, and make sure to avoid using chemical solvents to wipe the product.
2)If repair is required, contact a NAVTEK dealer company. Once the device is opened by an
individual or non-authorized company, we will no longer provide warranty.
3)After finishing usage, promptly turn off the e-scale. When left idle for long-periods, promptly
remove the battery.
4)Do not store the e-scale in moist, high-temperature or magnetized locations.
VI: Attached list
1)E-scale (scale plate and hand held device)
2)User manual
3)1.5V‘AA’alkaline battery
4)1.5V‘AAA’ alkaline battery
1 set
1
4
4
When the weighing pan is at off state, press first, and then . At this moment, Low-Battery
red light is on. Keep the two buttons pressed for 10 seconds, till the Bluetooth blue light is on.
Loose the , then Low-Battery red light is off. Keep pressing the for over 5 minutes, till the
Low-Battery red light and Bluetooth blue light flashes alternately. Loose the , then the Low-
Battery and Bluetooth is on to start the calibration program.
Within 10 seconds, press , to represent NRS3i01. Then Low-Battery red light and Bluetooth
blue light flashes fastly. Keep the scale is unloaded. When the Low-Battery red light and
Bluetooth blue light flash 1 second simutaneously, Place 176.4lbs standard weight on NRS3i01,
waiting for the automatic calibration. If the calibration succeeds, the Bluetooth blue light is on for
10 seconds, and the scale turns off automatically. If the calibration fails, the Low-Battery red light
is on for 10 seconds, and the scale turns off automatically.
1.
2.
Note:1. after calibration, press 2 seconds, to turn off scale manually.
2.When the correction is unconditionally, please return it to the company or the authorized
retailer for correction.
Correct Disposal of this product
This marking indicates that this product should not be disposed with other household
wastes throughout the EU. To prevent possible harm to the environment or human health
from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of
material resources. To return your used device, please use the return and collection systems or
contact the retailer where the product was purchased. They can take this product for
environmental safe recycling.
Note：
Confirm the models are NRS3i01 before calibration, the weighing range is 60kg, or, 120kg. Make
sure the battery power is enough to assure accuracy for calibration. If the battery power is low,
Low-Battery red light flashes 10 seconds fastly and then turns off automatically, and the calibration
fails.
Lb
oz
5. When the recovered weight reaches the pre-set recovery weight, recovery is completed, and
you can manually end system recovery by pressing , and the alarm will stop. At this point
the LCD screen will display the gross weight of the refrigerant container.