Graco 306518ZAC Operation, Pressure Relief Procedure, Start and Adjusting the Pump

Operation

Operation

Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever you see this symbol.

This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment.

1.Close the pump air regulator and bleed-type master air valve (required in the system).

2.Hold a metal part of the dispensing valve firmly to a grounded metal waste container and trigger the valve to relieve the fluid pressure.

Start and Adjusting the Pump

1.With the air regulator (C) closed, open the bleed-type master air valves (A), or, if so equipped, join the quick-disconnect coupler (M) to the male fit- ting (L).

2.Open the dispensing valve (J) into a grounded metal waste container, making firm metal-to-metal contact between the container and valve.

3.Open the pump air regulator (C) slowly, just until the pump is running. When the pump is primed and all air has been pushed out of the lines, close the dis- pensing valve.

NOTE: When the pump is, and with sufficient air sup- plied, the pump starts when the dispensing valve is opened and shuts off when closed.

4.Adjust the air regulator until you get sufficient flow from the dispensing valve. Always run the pump at the lowest pressure necessary to get the desired results. Do not exceed the maximum working pres- sure of any component in the system.

5.If your pump accelerates quickly or is running too fast, stop it immediately and check the fluid supply. If the supply container is empty and air has been pumped into the lines, prime the pump and lines with fluid, or flush it and leave it filled with a compat- ible solvent. Be sure to eliminate all air from the fluid lines.

NOTICE

Never allow the pump to run dry of the fluid being pumped. A dry pump will quickly accelerate to a high speed, possibly damaging itself, and it may get very hot.

NOTE:

•The low-level cut-off valve accessory (K) closes the pump fluid intake when the fluid level is low, which prevents air from entering the system.

•A pump runaway valve (D) should be installed on the air line to automatically shut off the pump if it starts to run too fast.

6.Read and follow the instructions supplied with each component in the system.

7.If the pump will be unattended for any period of time, if there is an air supply interruption, or at the end of the work shift, shut off the system and always relieve the pressure. (See Pressure Relief Proce- dure)

6 306518ZAC