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Pressure Relief Procedure

3A0096B

13

Pressure Relief 
Procedure

1.

Lock the dispense valve trigger.

2.

Shut off the power to the pump:

In an air-powered system, close the air regula-
tor (H) and the bleed-type master air valve (J).

In a hydraulic-powered system, close the 
hydraulic supply line shutoff valve (E) first, then 
the return line shutoff valve (S).

3.

Unlock the valve trigger.

4.

Hold a metal part of the valve firmly to the side of a 
grounded metal pail, and trigger the valve to relieve 
pressure.

5.

Lock the valve trigger.

6.

Open the fluid line drain valve and the pump bleed 
valve (N). Have a container ready to catch the drain-
age.

7.

Leave the pump bleed valve open until ready to dis-
pense again.

If you suspect that the nozzle or hose is completely 
clogged, or that pressure has not been fully relieved 
after following the steps above, very slowly loosen the 
retaining nut, nozzle, or hose end coupling and relieve 
pressure gradually, then loosen completely. Now clear 
the nozzle or hose.

Prime/Flush

NOTE:

 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 com-
patible solvent before using the pump.

Flush with a fluid that is compatible with the fluid you are 
pumping and with the wetted parts in your system. 
Check with your fluid manufacturer or supplier for rec-
ommended flushing fluids and flushing frequency. 
Always flush the pump before fluid dries on the displace-
ment rod.

1.

Follow 

Pressure Relief Procedure

 on page 13.

2.

Supply solvent to the pump.

3.

Hold a metal part of the valve firmly to the side of a 
grounded metal pail.

4.

Start the pump. Always use the lowest possible fluid 
pressure when flushing.

5.

Trigger the valve.

6.

Flush the system until clear solvent flows from the 
valve.

7.

Relieve the pressure.

NOTICE

Never leave water or water-based fluid in a carbon 
steel pump overnight. If you are pumping a 
water-based fluid, flush with water first. Then flush 
with a rust inhibitor, such as mineral spirits. Relieve 
pressure, but leave rust inhibitor in pump to protect 
parts from corrosion.

Summary of Contents for L200CM

Page 1: ...tant Safety Instructions Read all warnings and instructions in this manual Save these instructions ti14639a Package with NXT Air Motor and L500CM Displacement Pump See page 3 for model information inc...

Page 2: ...Packages 16 258753 Hydraulic Powered Ink Package 17 Dimensions 18 Technical Data 19 Graco Standard Warranty 20 Graco Information 20 Related Manuals Component Manuals in English Manual Description 312...

Page 3: ...500 cc 100 0 7 7 0 1400 9 7 97 258745 A 14 1 Air 500 cc 100 0 7 7 0 1400 9 7 97 258746 A 14 1 Air 500 cc 100 0 7 7 0 1400 9 7 97 258747 A 23 1 Air 200 cc 100 0 7 7 0 2300 15 9 159 258748 A 23 1 Air 2...

Page 4: ...PARTS HAZARD Moving parts can pinch or amputate fingers and other body parts Keep clear of moving parts Do not operate equipment with protective guards or covers removed Pressurized equipment can star...

Page 5: ...s away from traffic areas sharp edges moving parts and hot surfaces Do not kink or over bend hoses or use hoses to pull equipment Keep children and animals away from work area Comply with all applicab...

Page 6: ...Warnings 6 3A0096B...

Page 7: ...llow your local code Object being sprayed follow your local code Solvent pails used when flushing follow local code Use only conductive metal pails placed on a grounded surface Do not place the pail o...

Page 8: ...ine drop to drain off moisture Air shutoff relief valve M isolates the air line accessories for servicing Locate upstream from all other air line accessories DataTrak see the NXT air motor manual 3112...

Page 9: ...rain Valve not supplied L Air Filter not supplied M Air Shutoff Relief Valve for accessories not supplied N Pump Bleed Valve P Wet Cup R Wet Cup Drain Fitting if used T DataTrak Module standard module...

Page 10: ...hydraulic motors only on the upstroke of the operating cycle The oil return line must have at least twice the flow capacity as the oil supply line Otherwise back pressure on the hydraulic motor pisto...

Page 11: ...tlet H Flow Control Valve J Hydraulic Pressure Gauge K Pressure Reducing Valve L Accumulator M Drain Line N Pump Bleed Valve see FIG 6 on page 15 P Wet Cup R Wet Cup Drain Fitting if used see FIG 5 on...

Page 12: ...an be installed in place of the covered fitting if desired Wet Cup Drain Fitting As supplied the side port of the wet cup is plugged To install a drain tube remove the plug and install the sup plied 9...

Page 13: ...Now clear the nozzle or hose Prime Flush NOTE 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...

Page 14: ...ic power supply b Open the flow control valve H all the way c Adjust the pressure reducing valve K until you get the desired fluid pressure Run the pump until all air is purged from the fluid lines d...

Page 15: ...w Pressure Relief Procedure page 13 3 Always flush the pump before the fluid dries on the displacement rod See Prime Flush on page 13 To reduce the risk of fluid injection do not use your hand or fing...

Page 16: ...CM Displacement Pump 258748 A P23MCM N22LT0 NXT Air Motor L200CM Displacement Pump 258749 A P23RCM N22LR0 NXT Air Motor L200CM Displacement Pump 258750 A P26LCM N65LN0 NXT Air Motor L500CM Displacemen...

Page 17: ...hex hd 3 8 16 x 1 5 in 38 mm long 4 4 276025 LUG 4 5 184086 GASKET PTFE 1 6 208390 BALL VALVE 1 4 npt mbe 1 7 237569 WIRE ground 1 8 n a FITTING 90 1 2 in 13 mm ID tube 1 9 100139 PLUG pipe 1 8 npt 1...

Page 18: ...4 mm mounting holes for 1 2 in 13 mm diameter bolts D D Table 1 Pump Package Dimensions Pressure Ratio xx 1 Motor Displacement PumpVolume cc per cycle A in mm B in mm C in mm D in mm Weight lbs kg 14...

Page 19: ...ump manual 312375 Maximum pump speed Do not exceed maximum recommended speed of fluid pump to prevent premature pump wear 60 cpm Wetted parts Refer to Check Mate Displacement Pump manual 312375 Ink Pu...

Page 20: ...anship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IM...

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