Switching an Impact off does not release the pressure in the pump and hose. Titan's Impact 410 manual says the PRIME/SPRAY valve or bleed valve must be operated. The Impact 640 manual lists the steps: lock the gun, switch off, turn the pressure knob to OFF, trigger into a grounded metal container, lock the gun, set PRIME/SPRAY to PRIME. Your own model's manual governs.
The hazard
Airless spraying works at very high fluid pressure. A jet of paint can inject fluid through the skin. The wound looks like a small cut, which is why people shrug it off, but it is a serious medical emergency. Get immediate medical attention and tell the doctor what the fluid was.
Habits that prevent it
- Never put a hand or finger over the tip, and never point the gun at any part of your body.
- Never test the spray on your skin.
- Keep the tip guard fitted. The site lists 0289228, a G-thread tip guard, and 651-070, a 6 inch tip extension with guard.
- Engage the gun's trigger lock whenever you are not spraying, including when you set the gun down.
- Never work without the guard because it is in the way.
The guard and the trigger lock only work if they are on and used. Both are cheap compared with an injury, and both are on the accessories page of every Impact diagram.
Turning off does not relieve pressure
Pressure stays in the pump, hose and gun after the motor stops. Titan's Impact 410 manual says so directly: turning off the motor does not release pressure, and the PRIME/SPRAY valve or the bleed valve must be operated. Airless systems in general keep pressure after shutdown, so a deliberate relief step is part of any service routine.
Relieve pressure before you clean the sprayer, service it, change a tip or a part, and whenever you stop work. Do it even if you only plan to swap a tip for a moment.
The relief steps in the Impact 640 manual
Titan's Impact 640 manual lists these steps. They are the 640's, so use them as a guide to what a relief procedure looks like and read your own model's manual for the exact sequence.
Lock the gun
Engage the trigger lock.
Turn the sprayer off
Switch it off at the sprayer.
Turn the pressure control knob to OFF
Counterclockwise, as the manual describes.
Trigger into a grounded metal container
Take the gun off lock and trigger it into a grounded metal container to let the pressure out.
Lock the gun again
Engage the trigger lock once more.
Set PRIME/SPRAY to PRIME
The last step in the 640 manual's list.
Manuals for every model are on our manuals page. Titan's Impact manuals are not identical, and we have not read the 540, 740, 840, 1140 or 1640 manuals, so we do not attribute these steps to those models.
Hose and fittings
No component in the system may be rated below the sprayer's working pressure. That covers the hose, whip hose, gun, tip guard and fittings, and the rule is that every part meets or exceeds the lowest rating in the system. Use airless-rated, conductive hose that is grounded as the manufacturer specifies. Several Impact models ship with a 1/4 inch by 50 foot hose, and the Impact 1640 ships with a 3/8 inch by 50 foot hose and a 1/4 inch by 6 foot whip.
Replace a damaged hose rather than patching it. Replacement options the site lists include 316-505, a 50 foot spray hose, and 316-506, a 3300 PSI whip hose, 5 foot by 3/16 inch. Confirm the rating of any hose, gun or fitting against your sprayer's maximum pressure before you use it.
Guns and the parts around the tip
The 0538020 RX-Pro gun comes with a 517 TR1 tip, and 0538022 is the RX-Pro gun without it. The 661-020 tip seat and seal kit (5 pack) covers the small seals at the tip. A tip that clogs and has to be cleared is also the moment to relieve pressure first, not after.
Guards, guns, hoses and tip parts for the 640.
The same items on the 840 diagram.
Accessories for the 1040.
Accessories for the original Impact 440.
Read the pressure relief steps for your exact model.
Guard, gun and hose parts listed on the Impact diagrams:
The Short Version
Treat the tip as a danger point. Keep the guard on, lock the trigger, and relieve pressure with the manual's steps before any service. Turning the motor off is not relief. Replace damaged hose and any guard that is cracked.
Not sure which guard or hose fits your Impact?
Call (713) 931-0006 with your model and serial number and our parts team will confirm the part before you order.
(713) 931-0006Order by Parts Diagram