Pressure Relief Procedure
Pressure Relief Procedure | Gun Trigger Lock | ||||
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Follow this Pressure Relief Procedure whenever you are instructed to relieve pressure, stop spraying, check or service equipment, or install or clean spray tip.
1.Engage trigger lock.
2.Shut off pump.
3.Disengage trigger lock.
4.Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.
5.Engage trigger lock.
6.Open fluid drain valve (see System Requirements). Leave drain valve open.
If pressure is not fully relieved:
•Spray tip is clogged. For RAC tip, see Cleaning Tips/Clearing Clogs, page 4. For flat tip, slowly loosen tip guard retaining nut to relieve pressure. Remove and clear tip.
•Hose is clogged. Slowly loosen hose end coupling to relieve pressure. Clean hose obstruction.
To prevent injury when the gun is not in use, always engage the gun’s trigger lock if unit is being shut down or left unattended. A
Trigger |
| Trigger |
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Locked |
| Unlocked |
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(no spray) |
| (spray) |
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| ti5049b | ti5048b |
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Tip Installation
System Requirements
• Install a |
air supply line to relieve air trapped between this valve |
and pump after air regulator is shut off. Trapped air can |
cause the pump to cycle unexpectedly. |
RAC Tip
1.Follow Pressure Relief Procedure. Engage trigger lock.
• Install a fluid drain valve between the pump and gun to |
relieve pressure in displacement pump, hose, and gun. |
Triggering to relieve pressure may not be sufficient. See |
Pressure Relief Procedure. |
Grounding
Check your local electrical code and pump/sprayer manual for detailed grounding instructions.
• | Spray gun: ground through connection to a grounded fluid |
| hose and pump/sprayer. |
• | Fluid hose: use only grounded hoses. |
• | Fluid supply container: follow local code. |
• | Object being sprayed: follow local code. |
2.Insert housing (A) through back of retaining nut (B) and pull it forward. Install metal seal (20a) in housing (A), flat side first.
3.Install tip cylinder (20c) so small orifice (X) faces front.
4.Insert tip guard (19) into place. Insert screw (20d) and tighten. Install white gasket (20b) in housing. Install assembled RAC onto spray gun.
B
A
20a
A
X 20c
20d 20b
19
• | Solvent flushing pails: follow local code. Use only conduc- |
| tive metal pails placed on a grounded surface. Do not |
| place pail on a nonconductive surface, such as paper or |
| cardboard, which interrupts grounding continuity. |
• | To maintain grounding continuity when flushing or reliev- |
| ing pressure: hold metal part of gun firmly to side of a |
| grounded metal pail, then trigger gun. |
Flat Tip
1.Follow Pressure Relief Procedure. Engage trigger lock.
2.Insert tip (32) and gasket (30) into back of guard (31).
3.Install guard over end of gun.
32
31
30
ti10051a
312145B | 3 |
