Careud U903 Wireless Tyre Pressure Monitoring System User Manual

Careud U903 Wireless Tyre Pressure Monitoring System

User Manual
Wireless Tyre pressure monitoring system

Quick explanation

Caution: Turn on the power of the display and then install the sensor.Follow this step, and the data can be displayed at real time.

Functional description of the display

( High temperature alarm/Low power alarm Interface/switch to pressure after alarming 8s and switch to temperature/low power alarm interface automatically after 8s.Rrpeat the switching until fault removed)

For example.the alarm value setting by the user are as follows:

• High pressure alarm value:44PSI
• Low pressure alarm value:29PSI
• High temperature alarm value:65 C

High-pressure alar m

Tire pressure is over 44PSI

High pressure alarm of the spare tire “5”

Noted:When the front four tires and the spare tire are abnormal at the same time, the alarm values of the four tires will be displayed first, and then the spare tire will be displayed.

Low-pressure alarm

Tire pressure is lower than 29PSI

High pressure alarm of the spare tire “5”

Car battery with Low valtage alarm

The battery power is less than 1 OV,alarm as below:

Functional description of the display

Tire-temperature alarm

Air-leaking alarm

Air-leaking prompt of tire

• Low-power alarm of sensor
  For example, the battery of No. sensor is running out, first will alarm as below:

• Icon flash
  After 10 seconds, value 30 will turn to LO, and it will switch to each other every 10 seconds.

After the display alarms, press anywhere on the display to remove the prompt sound, and the flickering prompt will continue till the fault is removed

Parameter setting

The parameters have been set before delivery, and the operations below are not needed)

Parameter setting

Matching operations

Note: The operations have been matched before delivery, and they are only needed when the data is missing, or when the sensor or the display needs to be replaced.

Replace the battery with external sensor

1. Remove the tamper ring.
2. Open the housing with a spanner and remove it Replace the battery.

Installation of external sensor

1. First tighten the anti-burglarygasket and thentighten the sensor
2. Hold the anti-burglary gasketwith a spannerand tighten it counter-clockwise

Installation of inner sensor

1. Remove the original air nozzle, install the sensor into the air nozzle position, and adjust the best angle of the sensor on the hub.
   (As shown in the picture above a correctly installed)

2. Install the washer first, and then use the wrench to install the nut. After pumping up, close the nut and install it.

Parameters of sensor

Specification of sensor/emitter

Working humidity: 100%
Weight: Inner sensor: 55g (NF+) (37g of air nozzle not included)
Outer sensor: 9.5g (WF)/6g (WI)
Dimension of inner sensor: 69mm86mm14.5mm CNF+) (L”W”H)
Dimension of outer sensor: 23mm”15mm (WF) (DINH)
18mm”13mm (WI) (DIA”H) Standby current: 1uA
Standard: CTB160109001Q test report is issued by the test agencywith legal qualifications
Test scope of pressure: 0-13.?bar (0-199psi)
Test scope of temperature: -40°C-+125°C
Transmitting frequency: FSK433.92MHz

Notes for attention and statement

• This product applies only to the models of cars with air pressure of tire within 199PSI.
• The safety of Car tires cannot be wholly dependent on this product. The tires shall be checked on a regular basis, and the tiresshall be ensured to be free from damages such as pricked hole,cutting and swelling.
• When the product gives out an alarm, the driver shall stop the car for checking and handling.
• The product cannot forecast any sudden damage of the tires as a result of external force.
• Do not operate the product in driving.
• The shelf life of the battery of the sensor is related to the driving mileage of the Car.
• Do not charge the monitor for a long time (to avoid shortening the battery life of the monitor).
• Please don’t use the liquid tire repair agent.or it may block the sensor detection hole.

Notes for use

Please read the following carefully before installing the product:

1. The display shall be installed at the place where driving view is not blocked.

2. The display shall be ensured to be reinforced so that it will not fall off in the course of driving.

3. After the sensor is installed, confirm if the air nozzle is air leaking, and apply some soap water at the air nozzle when necessary and check if any air leaking exists.

4. When the air pressure is too high, take care and prevent the tire from bursting in driving, and when the air pressure is too low, take care of oil consumption and balance.

5. The product can monitor the tires at real time effectively, but it cannot guarantee
   any sudden occurrence of safety accident of tires. Therefore, choosing tires of good quality is of equal importance with ensuring normal air pressure of tires.

6. When the vehicle is in driving, if the signal is interfered, the signal of the display may be missing, and the use of the product may be affected. In this case, it shall be matched again.

7. lf the display is not touched or vibrated within 3-5 minutes, it will hibernate automatically, and a slight vibration may trigger automatic power-on test of the data transmitted by the sensor.

8. The connection between the display and the sensor is wireless. Several
   anti-interference functions have been designed and the possibility of its being interfered is extremely low.

9. In the course of driving, due to thermal expansion and contraction, air pressure of tires may be changed towards slightly low or slightly high, and it’s normal.

10. Generally, natural air leaking of the tires may occur due to natural ageing of rubber product, and it’s normal and has not direct relationship with installation of the product.

11. It’s prohibited to dismantle, modify or change the product by yourself, and it’s the responsibility of your own in case of your doing so which results in failure of normal work of the product.

12. The original air nozzle of the vehicle being rubber one, it’s recommended be changed into an aluminum alloy one (for when the sensor is mounted onto the rubber air nozzle, the air nozzle may fly out due to the impact of centrifugal force at high-speed rotation).

13. The specification and technical parameters may be inconsistent with those in the user manual, for they may be changed from time to time due to upgrade or update. They are subject to the actual product without prior notice, and the manufacturer reserves the right to interpret them.

Trouble-shooting

1. The display cannot be displayed normally
   • Confirm if the display is short of power or not (charge directly if so)
   • Confirm if the display cannot display tire pressure value
2. The sensor is short of power, 2. The signal is interfered, then match again)
   • Confirm if the display is short of codes (low-temperature cooling)
   • If the display is halted and displays in full screen (contact and return to the manufacturer or stay for 24 hours till it is recovered automatically)
   • If the above methods cannot solve this problem yet, contact the local distributor.
   • The sensor cannot work normally
   • Confirm if the sensor is short of power (replace the battery in time)
   • In case of an outer sensor, replace with a CR1225 button cell in time
   • In case of a common outer sensor, replace with a CR1632 button cell in time
   • In case of an inner sensor, contact the distributor and return it to the manufacturer.
   • Confirm if the sensor is damaged due to external force (purchase another one and replace it)
   • Confirm that the normal work of the sensor and the vehicle is not affected in driving after the sensor is installed (potential risk! Too close distance between the air nozzle and the clip may result in the damage)
   • The sensor cannot be installed normally in case of a special vehicle during installation (contact the technical personnel of the manufacturer and seek for the solution).
   • If the problem cannot be solved with the above methods, contact the local distributor.
3. When the icon of “short of power” appears on the display screen, and it continues being used, the display may be malfunctioned. At this time, charge 1he display to return it to normal.
4. The colors of the display screen are changed
   • Confirm if the temperature inside the vehicle is too high (over 65 C ).
   • When the temperature returns to normal, it will be recovered to normal display.
   • Update speed of the display screen becomes slower
   • Confirm if the temperature inside the vehicle is too low (below -20 C ).
   • When the temperature re1urns to normal, it will be recovered to normal display.
5. After the display is started again, there’s no data display of tires
   • Only when the sensor detects that the tire has a pressure change of over 1 PSI, it will send new pressure and temperature value to the display, so there’s no data display of the tire.
   • The data will be displayed only after the vehicle is started.

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