Graco 238515, 238512, 238511 User Manual

Instructions -- Parts List

PRESET

PM5t

t Electronic

Metered Dispense Valves

For pre--set metered dispense of oils and antifreeze.

1000 psi (7 MPa, 69 bar) Maximum Working Pressure 5 gpm (18.9 lpm) Maximum Flow Rate

Model 23851 1 75____ bend 3/8--in. rigid tube

Model 238512 3/8--in. coupled flexible hose

Model 238515 90____ offset

Patent Nos. 4,883,199 DE3834454C2 D382,500 1025804 6,357,300 ZL97102971.7 6,047,906 187760 77664 13742

Model 238511 shown

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Important Safety instructions

Read all warnings and instructions in this manual. Save these instructions.

CAUTION

D This dispense valve is designed to dispense

petroleum-based lubricants and antifreeze only. Do not dispense windshield washer solvent with this dispense valve.

D This dispense valve is designed for indoor use

only.

D This dispense valve is not designed for in-line

installation. Do not install with a shutoff valve on the outlet side of the meter. Such installation could result in damage to the meter housing cover.

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440- 1441

Table of Contents

Warnings 2......................................

Installation 4.....................................

Setup 7.........................................

Operation 11....................................

Troubleshooting 13...............................

Service 16......................................

Parts List 18.....................................

Parts Drawing 19.................................

Technical Data 20................................

Dimensional Drawing 21..........................

Graco Standard Warranty 22......................

Graco Information 22.............................

WARNINGWARNING

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

INSTRUCTIONS

D This equipment is for professional use only.

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

D Read all instruction manuals, tags, and labels before you operate this equipment.

D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor

for assistance.

D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

D Do not leave this dispense valve unattended while it is dispensing.

D Check equipment daily. Repair or replace worn or damaged parts immediately.

D Do not exceed the maximum working pressure of the lowest rated system component. See the

Technical Data on page 20 for the maximum working pressure of this component.

D Use fluids and solvents that are compatible with the equipment wetted parts. See the Technical

Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.

D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not

expose Graco hoses to temperatures above 180_ F(82_ C) or below --40_ F(--40_ C).

D Comply with all applicable local, state, and national fire, electrical, and safety regulations.

D Do not point the dispense valve at anyone or at any part of the body.

D Do not put your hand or fingers over the end of the dispense valve.

D Do not stop or deflect leaks with your hand, body , glove, or rag.

D Use only extensions and nozzles that are designed for use with this dispense valve.

D Follow the Pressure Relief Procedure on page 5 before you clean, check, or service this

D Tighten all fluid connections before you operate this equipment.

D Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do

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equipment.

not repair high pressure couplings; you must replace the entire hose.

WARNINGWARNING

FIRE AND EXPLOSION HAZARD

Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and result in a fire or explosion and serious injury.

D Be sure the entire fluid system is properly grounded. Refer to your pump instruction manual for

complete details. See Grounding on page 6.

D If there is any static sparking or you feel an electric shock while using this equipment, stop

dispensing immediately. Do not use the equipment until you identify and correct the problem.

D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid

being dispensed.

D Keep the dispensing area free of debris, including solvent, rags, and spilled gasoline.

D Do not smoke while flammable fluids or fumes are in the dispensing area.

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Installation

Typical Installations

Fig. 1 shows a typical hose reel installation. These dispense valves can also be installed on a console, as showninFig.2.

CAUTION

Do not use this dispense valve on non-Graco consoles. Such use could result in the trigger becoming inadvertently pressed while the dispense valve is stowed.

The typical installation shown in Fig. 1 is only a guide. The components shown are typical; however, it is not a complete system design. Contact your Graco distributor for assistance in designing a system to suit your particular needs.

CAUTION

This dispense valve is not designed for in-line installation. Do not install with a shut-off valve on the outlet side of the meter. Such installation could result in damage to the meter housing cover.

Mounting Bracket

Mounting bracket 196471 is available for resting a PM5 dispense valve on a console. See Fig. 2.

CAUTION

Do not obstruct the trigger of this dispense valve, and do not set the unit down resting on its trigger, or it might not stop dispensing.

Fig. 1

KEY DESCRIPTION

H Thermal relief kit (required) Part No. 235998

Install downstream from pump.

J Fluid shut-off valve

K Hose

L Hose reel fluid inlet hose

M Hose reel

N PM5 electronic metered dispense valve

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mounting bracket 196471

Fig. 2

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Installation

WARNING

PRESSURIZED EQUIPMENT HAZARD

The equipment stays pressurized until pressure is manually relieved. To reduce the risk of serious injury from pressurized fluid, accidental spray from the dispense valve, or splashing fluid, follow the Pressure Relief Procedure when you

D Are instructed to relieve pressure D Check, clean, or service any system equipment D Install or clean fluid nozzles or filter

Pressure Relief Procedure

1. Turn off the power supply to the pump.

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.

WARNING

FIRE AND EXPLOSION HAZARD

The movement of fluids through the dispensing system generates static

electricity. The static electricity can cause volatile fumes to ignite, resulting in explosion and fire. The dispensing system must grounded. See Grounding on page 6.

Installation Procedure

CAUTION

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

1. If this is an existing installation, go to step 7.

Steps 2 through 6 are the Flushing Procedure.

2. Close the fluid shut-off valve (J) at each dispense position.

3. Make sure the main fluid outlet valve at the pump is closed, the air pressure to the pump motor is adjusted, and the air valve is open. Slowly open the main fluid valve.

4. Place the hose end (with no dispense valve connected) into a container for waste oil. Secure the hose in the container so it will not come out during flushing. If you have multiple dispense positions, first flush the dispense position farthest from the pump, and work your way toward the pump.

5. Slowly open the shut-off valve (J) at the dispense position. Flush out a sufficient amount of oil to ensure that the entire system is clean, and close the valve.

6. Repeat step 5 at all other dispense positions.

7. Relieve the pressure.

Pre-Installation Procedure

1. Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure above.

2. Close the shut-off valve (item J in Fig. 1).

3. Ground the hose and reel or console. See Grounding on page 6. Leave a minimum two engaged threads bare when using PTFE tape. The bare threads ensure a ground is maintained.

WARNING

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure at left.

8. Slide the swivel cover (4) of the PM5 onto the hose, small end first. See Fig. 3.

9. Apply thread sealant to the male threads of the hose fitting, thread the hose fitting into the swivel (3) of the PM5, and tighten it firmly. See Fig. 3.

NOTE: Make sure you let the sealant cure to the manufacturer’s recommendations before you let fluid into the system.

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Installation

10. Thread the sealing nut (5c, 6c, or 7c) onto the extension (5a) or street elbow (6d or 7d), thread the extension or elbow in at least three full turns, position it for proper alignment, and tighten the sealing nut. The PTFE seal on the sealing nut must face the valve housing. See Fig. 4.

NOTE: Theflexibleextension(6a)canalsobe threaded directly into the meter outlet without the street elbow or sealing nut. See the note in the Parts Drawing on page 19.

1 1. Thread the new nozzle (5b, 6b, or 7b) onto the

extension, and, with an open-end adjustable wrench, tighten it firmly. See Fig. 4.

NOTE: Only tighten the nozzle with the wrench on the flats of the nozzle bushing. Do not disas- semble the bushing from the nozzle. Disassembly will affect the performance of the nozzle.

WARNING

Model shown has

75_ bend rigid

extension

Fig. 4

hose

nozzle bushing

Nozzle is not serviceable.

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Do not use Graco’s old nozzle (Part No. 203655) or any other manual shut-off nozzle on the PM5 extension. You must use the new automatic nozzle that is provided with the PM5, or the meter could be damaged. Do not use any sealant material.

12. Open all dispense position shut-off valves, and start the pump to pressurize the system. See the Operation section for proper operation of meter.

13. T o ensure dispensing accuracy, purge all air from the fluid lines and dispense valve before you use it. Set the system flow to the desired flow rate, which is typically 1.5 gpm. Do not exceed a 5-gpm flow rate.

Slide onto hose before connecting.

hose fitting

Grounding

Proper grounding is an essential part of maintaining a safe system.

To reduce the risk of static sparking, ground all system components according to local and national electrical codes. Refer to the user manuals for the pump and other system components, and ground the following:

D Pump: Follow the manufacturer’s recommend-

ations.

D Air and Fluid hoses: Use only grounded hoses.

D Air compressor: Follow the manufacturer’s recom-

mendations.

Fig. 3

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D Fluid supply container: Follow the local code.

To maintain grounding continuity when flushing or relieving pressure, always hold a metal part of the

valve firmly to the side of a grounded metal pail, then trigger the valve.

Setup

T erms

The following terms are shown on the display and/or used often in this instruction manual.

D R--TOTAL: resettable total

Displayed to show the cumulative amount that the dispense valve has dispensed in all modes. It can be reset to zero.

D TOTAL: non-resettable total

Displayed to show the cumulative amount that the dispense valve has dispensed in all modes for the history of the unit. It cannot be reset.

D MANUAL mode

Dispense mode in which the display counts up from zero to show the dispensed amount. In this mode, you may lock the trigger, but you must manually unlock it when the desired amount is dispensed. Memory setting also unlocks the trigger.

D AUTO mode

Dispense mode in which a preset, user-entered amount is dispensed. When the preset amount is dispensed, a beep sounds, the trigger unlocks to stop the unit from dispensing, and the amount dispensed is displayed. At this point, you may dispense more by pulling back the trigger, and the display resumes counting up in Manual mode.

D Asleep / Awake

Asleep is a battery-saving mode in which the display goes blank after 45 seconds of inactivity during normal operation and 2 minutes when in the options menu. The display comes awake from sleep mode when you press the Manual/Reset or Auto/Reset button, but not when you squeeze the trigger to dispense fluid. The unit does keep track of the amount dispensed while the display is asleep.

NOTE: If the unit falls asleep after any dispense cycle, and you do wake it up by pressing the Auto/ Reset button, the previously dispensed amount is cleared, and the Auto mode dispense amount stored in memory is displayed. You will be at the beginning of an Auto mode dispense cycle.

Keypad Buttons

The buttons on the keypad and their functions are as follows (see the figure below):

D 10, 1.0, and 0.1

Used in Auto mode and during setup to enter dispense amounts.

D MANUAL / RESET and AUTO / RESET

Used individually to select Manual mode and Auto mode. Used together (pressed simultaneously) to access the setup menus.

For both of these buttons, the first push selects the mode, and the second push resets the display to zero.

D TOTAL

Used in any mode to see the resettable total and the non-resettable total.

NOTE: All buttons are disabled while fluid is being dispensed.

GAL

AUTO

If the unit falls asleep after any dispense cycle, and you do not wake it up by pressing the Manual/Reset or Auto/Reset button, it will default to manual mode. When dispensing begins you will be at the beginning of a manual mode dispense cycle.

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