Dino-Power DP6391, Инструкция по эксплуатации, Страница: 7 / 13

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capacity of the equipped air compressor must be large enough. The length of the used air pipe must not
exceed 5m.
4.2 Plug both the coating suction pipe and the discharge valve into the tank containing diluted coating, put
through the air source, and adjust the air intake pressure according to the type of coating. To ensure safe
use, the maximum air intake pressure must not exceed 0.6MPa, and is better to be kept at a value as low
as possible as long as the atomization of the coating is good.
4.3 Open the discharge valve (Do not open the spray gun), then the air-driven hydraulic booster pump of
the sprayer will move to-and-fro in a continuous and stable way. After the coating hydraulic system of the
sprayer has circulated in idle condition for 2 to 3 minutes, close the bleed valve. If the air-driven hydraulic
pump can work in balance peacefully after the pressure of the coating hydraulic system has reached
balance, the spraying operation can be started.
4.4 During the spraying, the spray gun should be pointed vertically or almost vertically at the workpiece
being coated; and the moving direction should be parallel to the surface being coated. The speed should
be even to avoid sagging.
4.5 The coating should be kept clean. For the unclean coating, it is not allowed to be used if not being
filtered first with a strainer of 40 to 100 meshes according to the dimension and viscosity of the coating
particle. If the coating is new, clean and without impurities such as hornskin and sand grain, it does not
need to be filtered after having been evenly mixed. For the coating apt to deposit, it should be mixed
regularly and continuously during the spraying process.
4.6 During the spraying process, the trigger safety of spray gun should be locked in time if the nozzle is
being cleaned or replaced or the spraying is stopped. Under no circumstances should the spray gun be
pointed at the operator or others, in case the trigger is accidentally pressed causing the high-pressure
coating to spray and injure someone. If the spray gun can still be opened after the trigger safety has been
locked, the small nut at the end of the drawbar of the gun
’
s valve plug should be adjusted. If the nozzle is
blocked, it should be immersed and cleaned with solvent, or cleaned carefully with a brush. Do not poke it
with hard things as this may damaging the nozzle.
4.7 If a airless tip is used during spraying process and the nozzle is slightly blocked, just turn the handle
180 degrees and trigger the spray gun, the dirt in the nozzle will be blown off by the hydraulic pressure of
the high-pressure coating itself. If the nozzle is completely blocked, the connecting nut of the nozzle has
to be slightly loosened. The handle can only be turned after the coating has been depressurized. If the
handle is turned by force while the coating is still pressurized, the handle is easily damaged. While using
standard nozzle or airless tip, a sealing ring has to be placed at the joint of the nozzle and the spray gun.
4.8 If the sprayer has worked continuously for a long time and a severe
“
frosting
”
phenomenon has
appeared inside and outside the silencer, a water-separating air filter and an air dryer can be installed
before the compressed air enters the sprayer, and the silencer can be dismantled. Another way is to
replace the engine oil in the oil cup of oil atomizer with
“
Anti-icing Fluid for Radiator
”
. The
water-separating air filter and air dryer will be purchased or manufactured by the customer according to
actual needs. The
“
Anti-icing Fluid for Radiator
”
is available nationwide.
4.9 If the spraying operation is finished or will not be used for a long periods of time, the suction pipe
should be pulled out of the coating tank in time. The residual coating in the coating pump, the suction pipe,
the high-pressure hose and the spray gun should be discharged by running the sprayer idly. Then the
whole coating hydraulic loop including the coating pump, the suction pipe, the discharge valve, the
high-pressure hose, the airless spray gun and the nozzle should be cleaned by running the sprayer idly
with dilution agent or solvent. During the cleaning, the opening of air intake ball valve should be small, the
reciprocal time of the sprayer is better to be controlled within 30 to 40 times per minute.