Graco SDM15 User Manual

This equipment will stay pressurized until the pressure 
has been manually relieved. To reduce the risk of 
serious injury from pressurized fluid, accidental spray 
from the dispense valve or splashing fluid, follow this 
Pressure Relief Procedure when ever you:

•

Are instructed to relieve pressure.

•

Check, clean or service any system equipment.

•

Install or clean fluid nozzles or filter.

1. Turn off power supply to the pump or close 

upstream ball valve.

2. Trigger the dispense valve into a waste container to 

relieve pressure.

3. Open any bleed-type master air valves and fluid 

drain valves in the system.

4. Leave the drain valve open until you are ready to 

pressurize the system.

The equipment must be grounded. Grounding reduces 
the risk of static and electric shock by providing an 
escape wire for the electrical current due to static build 
up or in the event of a short circuit.

Pump: Follow manufacturer’s recommendations.

Air and fluid hoses: Only use electrically conductive 
hoses. Check electrical resistance of hoses. If total 
resistance to ground exceeds 29 megohms, replace 
hose immediately.

Air compressor: Follow manufacturer’s 
recommendations.

Fluid supply container: Follow local code.

To maintain grounding continuity when flushing or 
relieving pressure: hold a metal part of the dispense 
valve firmly to the side of a grounded metal pail, then 
trigger the valve.

1. Relieve pressure, page 9.

2. Close the shut-off valve (B, F

. 1). 

3. Ground the hose and reel or console, page 9. Leave 

at least two threads bare when using PTFE tape. 
The bare threads ensure a ground is maintained. 

If this is an existing installation, go to Installing Meter 
section, page 10. The following procedure, Steps 1-5 
are the Flushing Procedure.

1. Close the fluid shut-off valve (B, F

. 1, page 8) at 

each dispense position.

2. Make sure:

•

main fluid outlet valve at the pump is closed,

•

air pressure to the pump motor is adjusted, 
and

•

air valve is open. 

FIRE HAZARD: Conductive metal surfaces on the 
meter must not make contact with any positively 
charged metal surface, including (but not limited to), 
the starter solenoid terminal, alternator terminal or 
battery terminal. Such contact could cause electrical 
arcing and a fire. 

•

If this is a new installation or if the fluid lines are 
contaminated, flush the lines before you install the 
metered valve. Contaminated lines could cause the 
valve to leak.

•

Never dispense compressed air with meter. Doing 
so will damage meter.