Merkury Innovations 312795E Operation, Pressure Relief Procedure, Flush the Pump Before First Use

Page 14

Operation

Operation

Pressure Relief Procedure

Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing or moving parts.

1.Lock the gun trigger.

2.Close the bleed-type master air valve.

3.Unlock the gun trigger.

4.Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.

5.Lock the gun trigger.

6.Open all fluid drain valves in the system, having a waste container ready to catch drainage. Leave drain valve(s) open until you are ready to spray again.

7.If you suspect that pressure has not been fully relieved after following the steps above, check the following:

a.The spray tip may be completely clogged. Very slowly loosen the air cap retaining ring to relieve pressure in the cavity between the ball/seat shutoff and the plugged tip. Clear the tip orifice.

b.The gun fluid filter or the fluid hose may be com- pletely clogged. Very slowly loosen the hose end coupling at the gun and relieve pressure gradually. Then loosen completely to clear the obstruction.

c.After following the steps above, if the spray tip or hose still seems completely clogged, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. With tip removed, trig- ger gun into waste container.

Flush the Pump Before First Use

The pump is tested with lightweight oil, which is left in to protect the pump parts. If the fluid you are using may be contaminated by the oil, flush it out with a compatible solvent. See Flushing, page 16.

Trigger Lock

Always engage the trigger lock when you stop spraying to prevent the gun from being triggered accidentally by hand or if dropped or bumped.

Gun Trigger

Locked

ti6581b

Gun Trigger

Unlocked

ti6582b

FIG. 5. Gun Trigger Lock

14

312795E

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Merkur Bellows Pump Assembly II 2 G c IIB T3 200CContents Related ManualsFire and Explosion Hazard Equipment Misuse Hazard Important Two-Component Material Information Models Smarts/Exhaust PackingsMotor Pump Air Displacement Working Pressure At 60 cpm FluidPump Data Fluid Inlet Outlet Air InletComponent Identification Component Identification KeyComponent Identification 312795E Prepare the Operator InstallationGeneral Information Typical Cart-Mount Installation Key Prepare the SiteAir and Fluid Hoses GroundingMount the Pump Wall-Mounted PumpsFluid Line AccessoriesAir Line Flush the Pump Before First Use Pressure Relief ProcedureOperation Trigger LockPrime and Adjust the Pump Shutdown and Care of the PumpFollow Pressure Relief Procedure, MaintenancePreventive Maintenance Schedule Tighten Threaded ConnectionsTroubleshooting Problem Cause SolutionPreparation Disconnect the Displacement PumpRepair Disconnect the PumpDisconnect the Air Motor Reconnect the Air Motor Reconnect the Displacement PumpReconnect the Pump Repair 312795E Parts Parts That Vary by Model Part No./DescriptionCart Mounting Kit 24E879 Repair KitsWall Mounting Kits Overflow Chamber Kit 24E298Repair Kits 312795E Performance Charts Model B15Bxx Fluid Outlet Pressure psi MPa, barMPa MinBar PressureModel B25Bxx Fluid Cycles per MinutePump Dimensions ModelWall Bracket Mounting Dimensions Technical DataGraco Standard Warranty Graco Information
Top Page Image Contents