Structure
Factory Set To 20psi
The deflators are factory set 20 psi. They can be easily adjust to 10psi, 15psi, 20psi, 25psi, 30psi, 35psi, 40psi by turing the adjustment ring to align the marking on the main body. Bellow picture shows the position of those positon.
With the help of auxiliary scales, you can easily adjust them to non-five-time psi, such as 22psi, 21psi, 19psi, 18psi, 17psi, 16psi, 8psi,9psi…. Eg. if you want 22psi, go to to 20psi first, then turn the adjustment ring clockwisely untill the vertical line of 20 psi align with the ‘+2’ of auxilliary scales.
Auxiliary scales also provide a micro-adjustment way to eliminate the deviation between deflator set and gauge reading. Eg. if the deflator set to 20psi, but gauge reading is 22psi. You just need to turn the adjustment ring anti-clockwisely by ‘2 psi’ grid with the auxilliary scales. Just remember turn clockwise pressure would be higher, anti-clockwise, pressure would be lower.
Step 1: Set your desired psi.
Firstly, turn the adjustment ring to the five-times psi position which is nearest to your desired psi. For example, if you want to deflate your tires to 18psi. Turn the adjustment ring to 20psi which is close to your desired psi, and then keep turing to align the 20psi vertical line on the adjustment ring to the ‘ -2’ line one the main body (Desired psi – Nearest five-times psi=’-2′).
Loosen the locking cap in an anti-clockwise direction.
Turn the adjustment ring to the positon of 20psi first.
Align the 20psi vertical line on the adjustment ring to the ‘ -2’ line one the main body.
Hold the postion of the adjustment ring and main body with your fingers.
Tighten the locking cap. Should Be tight and securely locked!
Do not forget to check if everything is right before use.
Step 2: Clip onto the valve.
Press the clip to open the chuck.
Open your finger to release. if necessary,pull the plunger to activate. Tires will deflate to desired psi and stop automatically.
Step 3: Fine tune according to the gauge reading when necessary .
Please note different tire pressure gauge can vary by up to 2psi. So fine tuning is not very necessary if actual pressure is ±2psi around your pre-set psi. By always using the same gauge and setting the deflators in a consistent manner you will obtain reliable result every time. For example, the deflator pre-set on 18psi, but actual tire pressure is 16psi. You can eliminate the deviation easily. Turning the adjustment ring in clockwise direction by ‘2psi grid’ (Fine Tune Number = Deflator Set – Gauge Reading, if Fine Tune Number >0, turn clockwise, otherwise turn anti-clockwise). Just remenber that turn the adjustment ring in clockwise, pressure will be higher, in anti-clockwise, pressure will be lower.
Note: Generally, fine tune process is only necessary for the first time use, or when you change a pressure gauge or change another car with different tires.
Check tire pressure with gauge.
Fine tune by turning the adjustment ring. Don’t forget to tighten the locking cap after any adjusment.
Stock for next time use.
Directions on maintenance (optional)?
Screw off the locking cap and pick out the plunger from the main body.
Clean the surface of the the plunger and hole of the main body with soft dry paper or air gun.
Check if the plunger can move up and down smoothly in the main body. Re-assemble them and test. If the problem still exists, contact seller for a solution.