What are the common problems of pneumatic spray gun

Date:20-06-08

Does the seller have some common problems in the use of the air gun? Do you know how to solve these common problems? Once these problems exist, users or sellers can solve them by themselves, instead of sending tools to manufacturers or other sales agencies for repair. So the premise is to understand the existence and solutions of these problems. There are some problems in the process of using the gun. Now, the phenomenon of the gun is analyzed in detail, which mainly includes the blockage of the atomizing hole, the damage of the air cap, the blockage of the atomizing air channel, the jump of the gun and the upper or lower weight of the spray amplitude.

Phenomenon: the spray amplitude shape is inclined to one side of the center of gravity
Cause: air cap center hole or atomization hole is blocked
Countermeasures: clean the atomizing cap; replace the atomizing cap
Phenomenon: left or right
Cause: the fan control hole on one side of the air cap is blocked; the air cap is damaged
Countermeasures: clean the atomizing cap; replace the atomizing cap
Phenomenon: the center of spray amplitude is too thick
Causes: too high viscosity of spraying paint; too low spraying pressure; the diameter of nozzle and thimble increase and decrease due to wear countermeasures: reduce viscosity of coating; increase spraying pressure; replace nozzle set
Phenomenon: spray splitting
Causes: too low viscosity of coating; too high spraying pressure; too large inner diameter of fan control hole; insufficient coating; clogged atomizing air channel
Countermeasures: adjust the viscosity of the paint; reduce the spraying pressure; change the nozzle set; add enough paint; clean the air channel of the spray gun
Phenomenon: Jumping gun
Cause: the nozzle is not tightened or installed properly; the sealing kit of the gun needle is loose; the connecting nut of the gun is loose (lower spray gun); the paint in the pot is insufficient; the nozzle kit is damaged
Countermeasures: tighten the nozzle or clean and install the nozzle package; tighten the thimble seal package; tighten the connecting nut; supplement the coating; replace the nozzle package
Phenomenon: upper or lower weight of spray amplitude
Cause: the air outlet of nozzle, thimble or air cap is blocked by sundries; the air cap or nozzle is damaged
Countermeasures: clean the nozzle set; replace the nozzle set
Phenomenon: no paint or a small amount of paint
Causes: the air supplement hole of the gun pot cover is blocked or the air cap and the suction pipe are seriously blocked; there is no paint in the pot; the stroke of the thimble is too small countermeasures: clean the air supplement hole, the air cap and the suction pipe on the pot cover; supplement the paint; rotate the paint flow regulating knob to increase the stroke of the needle valve
Phenomenon: coating leakage at nozzle
Cause: the sealing nut of thimble is too tight; there are foreign matters inside the nozzle port; the nozzle and thimble are not matched or damaged; the return spring of thimble is broken or not installed
Countermeasures: loosen the sealing nut of the thimble; clean the nozzle; replace the nozzle set; replace the thimble return spring or install the upper thimble return spring
Phenomenon: spray amplitude cannot be adjusted
Causes: the fan control holes on both sides of the air cap are blocked; the spray amplitude regulator is damaged or installed incorrectly; the air channel of the fan control hole of the spray gun is blocked
Countermeasures: clean the air cap; replace the spray amplitude regulator or install the spray amplitude regulator correctly; clean the air channel
Phenomenon: if the air pressure cannot be adjusted normally or the compressed air is just connected, it will be directly ejected from the muzzle
Cause: the air conditioner is damaged or the air valve is damaged; the return spring of the air valve is broken or not installed
Countermeasures: replace the air regulator or air valve; replace the return spring of air valve or install the return spring of air valve
Phenomenon: paint leakage of thimble seal
Causes: the sealing ring of the thimble is worn out; the gasket of the sealing ring of the thimble is not installed; the spring of the sealing ring of the thimble is damaged or not installed; the sealing nut of the thimble is loose; the contact between the thimble and the sealing ring is worn; the thimble and the spray gun are not matched
Countermeasures: replace the thimble seal ring and install the thimble seal ring gasket; replace or install the thimble seal ring spring; tighten the thimble seal nut; replace the nozzle set; replace the nozzle set matching the spray gun.

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