Graco PM5 238501 Operation manual

308735
Rev. F
First choice when
quality counts.t
INTRINSICALLY SAFE FOR
HAZARDOUS LOCATIONS
CLASS 1, DIV. 1, GROUP D
D97D.122550
EExia II A/B T3
INSTRUCTIONS–PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Preset
PM5tElectronic Metered Dispense Valves
1000 psi (7 MPa, 69 bar) Maximum Working Pressure
5 gpm (18.9 lpm) Maximum Flow Rate
Factory-Set to Measure in Quarts
Model 238501 75_bend 3/8-in. rigid tube
Model 238502 3/8-in. coupled flexible hose
Model 238505 90_offset
Factory-Set to Measure in Liters
Model 238503 75_bend 3/8-in. rigid tube
Model 238504 3/8-in. coupled flexible hose
Model 238506 90_offset
DThis dispense valve is designed to
dispense petroleum-based lubricants and
antifreeze only. Do not dispense
windshield washer solvent with this
dispense valve.
DThis dispense valve is designed for indoor
use only.
DThis 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.
CAUTION
Registered Design No. 1025804
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1998, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
Model 238501 or 238503 shown
TI0327
Parts

2 308735
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 24. . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 24. . . . . . . . . . . . . . . . . . . . . . . . . .
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.
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before you operate this equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor
for assistance.
DDo not alter or modify this equipment. Use only genuine Graco parts and accessories.
DDo not leave this dispense valve unattended while it is dispensing.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo 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.
DUse 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.
DRoute 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).
DComply with all applicable local, state, and national fire, electrical, and safety regulations.
DDo not point the dispense valve at anyone or at any part of the body.
DDo not put your hand or fingers over the end of the dispense valve.
DDo not stop or deflect leaks with your hand, body, glove, or rag.
DUse only extensions and nozzles that are designed for use with this dispense valve.
DFollow the Pressure Relief Procedure on page 5 before you clean, check, or service this
equipment.
DTighten all fluid connections before you operate this equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do
not repair high pressure couplings; you must replace the entire hose.
WARNING
WARNING
INSTRUCTIONS

3308735
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.
DBe sure the entire fluid system is properly grounded. Refer to your pump instruction manual for
complete details. See Grounding on page 6.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop dis-
pensing immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being dispensed.
DKeep the dispensing area free of debris, including solvent, rags, and spilled gasoline.
DDo not smoke while flammable fluids or fumes are in the dispensing area.
WARNING
WARNING

4 308735
Installation
Typical Installations
Fig. 1 shows a typical hose reel installation. These
dispense valves can also be installed on a console, as
shown in Fig. 2.
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.
CAUTION
Fig. 1
L
M
K
N
J
H
06174B
KEY DESCRIPTION
HThermal relief kit (required) Part No. 235998
Install downstream from pump.
JFluid shut-off valve
K Hose
LHose reel fluid inlet hose
MHose reel
NPM5 electronic metered dispense valve
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.
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.
CAUTION
Mounting Bracket
Mounting bracket 196471 is available for resting a PM5
dispense valve on a console. See Fig. 2.
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.
CAUTION
mounting bracket
196471
Fig. 2 TI0334

5308735
Installation
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
DAre instructed to relieve pressure
DCheck, clean, or service any system equipment
DInstall or clean fluid nozzles or filter
WARNING
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.
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.
WARNING
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 TeflonRtape.
The bare threads ensure a ground is maintained.
Installation Procedure
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.
CAUTION
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.
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.

6 308735
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 TeflonRseal on the sealing nut
must face the valve housing. See Fig. 4.
NOTE: The flexible extension (6a) can also be
threaded directly into the meter outlet without the
street elbow or sealing nut. See the note in the
Parts Drawing on page 19.
11. 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
disassemble the bushing from the nozzle.
Disassembly will affect the performance of the
nozzle.
WARNING
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. To 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.
3
hose fitting
Slide onto
hose before
connecting.
Fig. 3
4
TI0328
hose
5c
4
5a
5b
Model shown has
75_bend rigid
extension
Fig. 4
Nozzle is not serviceable.
nozzle bushing
TI0327
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:
DPump: Follow the manufacturer’s recommend-
ations.
DAir and Fluid hoses: Use only grounded hoses.
DAir compressor: Follow the manufacturer’s
recommendations.
DFluid 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.

7308735
Setup
Terms
The following terms are shown on the display and/or
used often in this instruction manual.
DR–TOTAL: resettable total
Displayed to show the cumulative amount that the
dispense valve has dispensed in all modes. It can
be reset to zero.
DTOTAL: 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.
DMANUAL 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.
DAUTO 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.
DAsleep / 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 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):
D10, 1.0, and 0.1
Used in Auto mode and during setup to enter
dispense amounts.
DMANUAL / 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.
DTOTAL
Used in any mode to see the resettable total and
the non-resettable total.
NOTE: All buttons are disabled while fluid is being
dispensed.
06044A
AUTO
GAL

8 308735
Setup
Selecting Dispensing Options
This is the procedure for setting or changing the resettable total, units of measurement, calibration factor, auto
preset amount, and shut-off default amount:
1. If the display is asleep, wake it up by pressing the Manual/Reset or Auto/Reset button.
2. To enter the dispensing options menus from any mode, press and hold the Manual/Reset and Auto/Reset
buttons simultaneously for four seconds.
The first menu is the Resettable Total menu, which is described in the first subsection below. You can advance
through the menus by pressing the Auto/Reset button. You will know which menu you are in, because a menu
indicator will be blinking in the display. The value that is displayed when you leave each menu and advance to
the next is the value that gets stored.
Resettable Total
In this menu, you can reset the resettable total to zero
or leave it unchanged. The resettable total
accumulates until the next time it is manually reset.
1. If you have not already entered the dispensing
options menus, do steps 1 and 2 in Selecting
Dispensing Options above.
2. With R–TOTAL blinking and the current resettable
total displayed, as shown below, do ONE of the
following two options:
DPress the Manual/Reset button.
The resettable total is set to zero, and 0 GAL
or 0 LITERS is displayed.
You can press the Manual/Reset button again
to toggle between zero and the previously
displayed resettable total. To lock in the
displayed value and advance to the Units of
Measurement menu, press the Auto/Reset
button.
OR
DPress the Auto/Reset button.
The currently displayed value is stored, and
the display advances to the Units of
Measurement menu.
R-TOTAL
GAL
06044A
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
Units of Measurement
In this menu, you can set the units of measurement to
quarts, gallons, pints, or liters.
1. If you have not already entered the dispensing
options menus, do steps 1 and 2 in Selecting
Dispensing Options above.
2. Press the Auto/Reset button repeatedly until QTS,
GAL, LITERS, or PTS blinks to indicate that you
are in the Units-of Measurement menu.
3. With QTS, GAL, LITERS, or PTS blinking, as
shown below, do ONE of the following two options:
DPress the Manual/Reset button.
Each time you press the Manual/Reset button,
the display scrolls to the next unit of
measurement. To lock in the new unit of
measurement and advance to the Calibration
Factor menu, press the Auto/Reset button.
OR
DPress the Auto/Reset button.
The displayed unit of measurement is retained,
and the display advances to the Calibration
Factor menu.
GAL
06044A
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual

9308735
Setup
Calibration Factor
In this menu, you can recalibrate the meter for different
fluids.
1. If you have not already entered the dispensing
options menus, do steps 1 and 2 in Selecting
Dispensing Options on page 8.
2. Press the Auto/Reset button repeatedly until CAL
blinks and the current calibration factor is
displayed to indicate that you are in the Calibration
menu.
3. With CAL blinking, you can press the Auto/Reset
button and choose not to change the calibration
factor, which advances to the Auto Preset Amount
menu.
OR
You can recalibrate the meter as follows:
3a. If the unit of measurement is liters, dispense
exactly one liter of fluid into a calibrated
1-liter container. If the unit of measurement
is gallons, pints, or quarts, dispense exactly
one quart of fluid into a calibrated 1-quart
container. For proper calibration, you must
dispense the exact amount, according to the
markings on the container.
After dispensing, the displayed number is the
new calibration factor. The new calibration
factor must be within 20 percent of the
factory default value [in the range of 294 gal.
(310 liters) to 442 gal. (467 liters)], or it will
not be accepted.
The following table lists approximate
calibration factors for different fluids. Your
calibration number may vary slightly due to
temperature or flow rate.
Calibration Number
Fluid Quarts Liters
oil (10W–30) 368 389
gear lube 368 389
automatic
transmission
fluid
368 389
antifreeze 347 367
Calibration factors at 70_F (21_C) at 2.0 gpm (7.6 lpm).
3b. Press the Auto/Reset button to store the new
calibration factor and advance to the Auto
Preset Amount menu.
Auto Preset Amount
In this menu, you can specify an amount to be
displayed when you enter the Auto dispense mode.
Typically, you would enter the amount you most
frequently dispense.
1. If you have not already entered the dispensing
options menus, do steps 1 and 2 in Selecting
Dispensing Options on page 8.
2. Press the Auto/Reset button repeatedly until
AUTO blinks and the auto preset amount in
memory is displayed to indicate that you are in the
Auto Preset Amount menu. This is the amount
that is displayed when the Auto/Reset button is
pressed during normal operation.
3. With AUTO blinking and the stored auto preset
amount displayed, as shown below, do ONE of the
following two options:
DEnter a new auto preset amount by pressing
the 10 button to change the 10s digit,
the 1.0 button to change the 1s digit, and
the 0.1 button the change the first decimal
digit.
In the figure below, the arrows point from the
numbered buttons on the keypad to the
corresponding digits in the display.
NOTE: If you press and hold the 10, 1.0, or
0.1 buttons, the digits advance rapidly.
To store the displayed auto preset amount in
memory and advance to the Shut-Off Default
Amount menu, press the Auto/Reset button.
OR
DPress the Auto/Reset button.
The currently displayed auto preset amount is
retained, and the display advances to the
Shut-Off Default Amount menu.
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
06044A
AUTO
GAL

10 308735
Setup
Shut-Off Default Amount
The shut-off default amount is for preventing
accidental overfills when dispensing with the trigger
locked in Manual mode. The shut-off default amount is
factory preset at 5 quarts.
In this menu, you can change the shut-off default
amount.
1. If you have not already entered the dispensing
options menus, do steps 1 and 2 in Selecting
Dispensing Options on page 8.
2. Press the Auto/Reset button repeatedly until the
clock icon blinks, and the stored shut-off default
amount is displayed to indicate that you are in the
Shut-off Default Amount menu.
3. With the clock icon blinking and the stored shut-off
default amount displayed, as shown below, do
ONE of the following two options:
DEnter a new shut-off default amount by
pressing the 10 button to change the 10s digit,
the 1.0 button to change the 1s digit, and
the 0.1 button the change the first decimal
digit. You cannot enter zero. To lock in the
new shut-off default amount and exit the
dispensing options menus, press the
Auto/Reset button.
The PM5 beeps and returns to the Manual
dispense mode to indicate that you have
exited the dispensing options menus.
OR
DPress the Auto/Reset button.
The PM5 beeps and returns to the Manual
dispense mode to indicate that you have
exited the dispensing options menus.
QTS
06044A
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual

11308735
Operation
Locking and Unlocking the Trigger
The trigger on this dispense valve has a locking
mechanism. In Auto mode, the unit stops dispensing
when the entered amount has been dispensed. In
Manual mode, the trigger does not automatically
unlock; you must unlock it manually.
To lock the trigger, press on the part of the trigger
that has the textured grip (see below) until you feel it
click into the locked position.
To unlock the trigger, press on the smooth part of
the trigger (see below) until you feel it click out of the
locked position. When you release the trigger, fluid
flow stops.
Press here
to lock. Press here
to unlock. 06227A
Checking Segments in the Display
When you press the Manual/Reset button or the
Auto/Reset button when the display is awake and in
the Manual or Auto dispense mode, the Segment
Check is displayed briefly. This display allows you to
check for burned out segments in the display. Press
the Manual/Reset or Auto/Reset button repeatedly to
get a good look at each segment in the display. The
Segment Check should show all of the segments
shown below.
QTS
LITERS
PTS
GAL
R-TOTALAUTO CAL
06044A
,, ,
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
Dispensing Fluid in Manual Mode
1. Press the Manual/Reset button.
If the display was asleep, it wakes up and
displays the amount that was displayed before it
fell asleep.
If the display was awake, and the meter is in the
Manual dispense mode, the meter beeps, and the
display clears to 0.00.
If the display was awake, and the unit is in the
Viewing Totals mode or the Auto dispense mode,
the meter switches to the Manual dispense mode.
2. When the display is awake, you can dispense from
zero or from the displayed amount by doing one of
the following:
DPress the Manual/Reset button again to clear
the display to 0.00 if it is not already at 0.00.
Then go to step 3.
OR
DGo straight to step 3 to dispense from the
displayed amount.
3. Squeeze the trigger. You may lock it. See
Locking and Unlocking the Trigger at left.
Fluid flows, and the amount displayed counts up
from zero or the previously dispensed amount.
4. Release/unlock the trigger when you have
dispensed the desired amount of fluid.
Fluid flow stops, and the amount you have
dispensed is displayed.
You may press the Manual/Reset button again to
reset the displayed amount to zero.
NOTE: When the trigger is released, the automatic
nozzle prevents the fluid in the extension from running
out.

12 308735
Operation
Dispensing Fluid in Auto Mode
Before you begin a preset dispense cycle, make
sure AUTO is displayed. If you do not see
AUTO on the display, you are not in the Auto
dispense mode, and fluid flow will not stop when
the auto preset amount is dispensed.
CAUTION
1. Press the Auto/Reset button.
The display wakes up if it was asleep, and AUTO
and the stored preset dispense amount are
displayed. The factory default is 0.00.
NOTE: To change the stored preset dispense
amount, see Auto Preset Amount on page 9.
2. You can dispense or change the displayed preset
amount by doing one of the following:
DGo straight to step 3 to dispense the displayed
preset amount.
OR
DTo change the displayed preset amount, you
can set the display to zero by pressing the
Auto/Reset button, then press the10 button to
change the 10s digit, press the 1.0 button to
change the 1s digit, and press the 0.1 button
the change the first decimal digit. Then go to
step 3.
3. Lock the trigger. See Locking and Unlocking
the Trigger on page 11.
Fluid flows, and the displayed dispensed amount
counts up from zero. When the preset amount is
dispensed, the unit beeps, the trigger unlocks, fluid
flow stops, the dispensed amount is displayed,
and the meter switches to the Manual dispense
mode.
If you want to stop fluid flow before the preset
amount is dispensed, manually unlock the trigger.
To continue the dispense, lock the trigger, and the
dispensed amount resumes counting toward the
preset amount.
If you want to continue dispensing after the trigger
unlocks at the preset dispense amount, squeeze
the trigger, and the dispensed amount resumes
counting in the Manual dispense mode until you
release the trigger.
NOTE: When the trigger unlocks, the automatic
nozzle prevents the fluid in the extension from running
out.
Viewing Totals
This is the procedure for viewing the non-resettable
and resettable totals. To change the resettable total,
see Resettable Total on page 8.
1. If the display is blank, press the Manual/Reset or
Auto/Reset button to wake it up.
2. Press the Total button to view the non-resettable
total amount.
If the unit of measurement is gallons, quarts, or
pints, the total is displayed in gallons, as shown
below. If the unit of measurement is liters, the
total is displayed in liters.
06044A
GAL
TOTAL
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
3. Press the Total button again to view the resettable
total amount.
If the unit of measurement is gallons, quarts, or
pints, the resettable total is displayed in gallons, as
shown below. If the unit of measurement is liters,
the resettable total is displayed in liters.
06044A
R-TOTAL
GAL
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
Pressing the Total button repeatedly toggles
between the non-resettable and resettable total.
4. Press the Manual/Reset or Auto/Reset button to
return to the Manual or Auto dispensing mode.

13308735
Troubleshooting
Relieve the pressure before you check or repair the
meter. Be sure all other valves and controls and the
pump are operating properly. WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
Problem Cause Solution
Battery icon is displayed. Battery is low. Replace the battery. See Replacing
the Battery on page 16.
Battery icon is blinking, and
bAtt is blinking. Battery is dead. Replace the battery. See Replacing the Battery on page 16.
Display does not activate. Battery is defective or dead.
Electronic control is malfunctioning.
A dispense mode has not been
selected.
Replace the battery. See Replacing
the Battery on page 16.
Replace the entire unit.
Select a dispense mode by pressing
the Manual/Reset button or the
Auto/Reset button.
Slow or no fluid flow Filter is clogged.
Pump pressure is low.
Shut-off valve is not fully open.
Foreign material is jammed in the
meter housing.
1. Relieve the pressure.
2. Clean or replace the filter. See
Replacing the Filter on page 16.
3. If the problem remains, contact
your Graco distributor for repair
or replacement.
Turn up pump pressure.
Fully open shut-off valve.
Contact your Graco distributor for
repair or replacement.
Displayed dispensed amount
is not accurate. Unit needs to be calibrated for the fluid that is being dispensed. Calibrate the meter for the fluid that is being dispensed. See Calibration
Factor on page 9.
continued

14 308735
Troubleshooting
Problem Cause Solution
Meter leaks from:
Cover/Control Poor swivel (3)/hose connection.
Poor swivel (3)/meter housing
connection.
Damaged valve stem (16) assembly.
Poor seal at meter housing plate.
NOTE: Place a straight edge along
meter housing plate. If flat, plate and
seal are ok. If plate is not flat, meter
is damaged.
Apply TeflonRtape (leave minimum 2
engaged threads uncovered for
electrical continuity) or sealant to
threads of hose and tighten the
connection. See step 9 in
Installation Procedure.
Torque the fitting to 20–25 ft.lb.
Replace or clean valve stem and
O–rings. See Servicing the Valve.
Contact your Graco distributor for
repairs or replacement.
Meter leaks from:
Automatic
nozzle
NOTE: It is important to dis-
tinguish between the two
causes of this problem. A
new nozzle will not correct a
fluid leak caused by a faulty
valve.
Automatic nozzle (5b, 6b, or 7b) has
a damaged seal.
Valve (16) has damaged or
obstructed seals.
Replace the nozzle. See Replacing
the Automatic Nozzle on page 17.
Replace or clean valve stem and
o-rings. See Servicing the Valve on
page 17.
Meter leaks from:
Swivel Poor swivel (3)/hose connection
Poor swivel (3)/meter housing
connection.
Apply TeflonRtape (leave minimum 2
engaged threads uncovered for elec-
trical continuity) or sealant to threads
of hose and tighten the connection.
See step 9 in Installation Proce-
dure.
Torque the fitting to 20–25 ft.lb.
Unit does not stop dispensing
when assumed auto amount
is dispensed.
Auto amount was not entered.
Trigger is obstructed, or unit has
been set down resting on its trigger.
Enter a preset dispense amount in
the Auto dispense mode. AUTO
must be displayed below the amount.
Never set the unit down resting on its
trigger.

15308735
Troubleshooting
Error Codes
Error codes are listed below. Even in an error
condition, the unit keeps track of the amount
dispensed. With any error code displayed, as shown
at right, you can
DPress the Manual/Reset button.
Error code is cleared, unit switches into Manual
mode, and dispensed amount is displayed.
DPress the Auto/Reset button.
Error code is cleared, unit switches into Auto mode,
and the preset amount is displayed.
06044A
! CAUTION
To prevent overfills and spills
Maximum Working Pressure 7 MPa (70 bar, 1000 PSI)
DDo not obstruct the trigger
DDo not leave unattended DDo not operate below 32_F (0_C) DRead instruction manual
Error Code Cause Solution
Err 2 Switch Error: Error occurred with
pick-up in internal gear, or flow
range is too high.
Air was pumped through the line.
Unit was dropped or encountered
excessive vibration during shipping.
Ensure that your flow rate is not
higher than 5 gpm. For further assis-
tance, contact your Graco distributor.
Purge air from the line.
Press the Manual/Reset button at
start-up.
Err 4 Flow has continued after it should
have shut off. Check if the unit is resting on the trigger or if an obstruction is pressing
the trigger. The unit checks for flow
every two seconds, and it beeps and
repeats the error code until the
trigger is released and the error code
cleared.
Err 5 The unit has dispensed the shut-off
default amount and has stopped
fluid flow.
Press the Manual/Reset button, and
dispense again. To change the
shut-off default amount, see the
Shut-off Default Amount section
on page 10.
Err 6 A preset dispense amount of zero
was entered for the dispense or is
stored as the default, and a Preset
dispense was attempted.
Enter an amount that is not zero.
See the Auto Preset Amount
section on page 9.

16 308735
Service
Replacing the Battery
FIRE AND EXPLOSION HAZARD
Only replace the battery in a
non-hazardous location, away from
flammable fluids or fumes.
You may order battery Part No. 113716 separately.
Battery required to meet safety approvals:
Duracell MN1604, PC1604
or
Eveready EN22, 522
WARNING
Before you replace the battery, press the
Manual/Reset button, which clears the dispensed
amount to zero. This saves everything to memory.
CAUTION
The low-battery and dead-battery displays are
explained in the Troubleshooting chart on page 13.
To change the battery, press the Manual/Reset button,
remove the impact guard (28), remove the battery
cover (2), and put in a new battery.
Replacing the Filter
The filter (25) is replaceable. To replace the filter, do
the following:
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 on page 5.
2. Unscrew the hose from the swivel (3).
3. Remove the o-ring (27), and remove the old filter
(25) from its seat in the swivel (3) with an o-ring
pick.
4. Push the new filter (25) into the swivel (3), and
make sure it is properly seated. Replace the
o-ring (27).
NOTE: Orient the new filter (25) so the concave
side of the screen points downstream, as shown
below.
27
3
25
5. Screw the hose back into the swivel (3).

17308735
Service
Servicing the Valve
Valve Repair Kit 240453 is available and can be
ordered separately. See the Parts List on page 18
and the Parts Drawing on page 19. The parts with
asterisks next to their reference numbers are available
in the Valve Repair Kit.
When you are repairing the valve with new parts from
the Valve Repair Kit, use all of the new parts. To
replace the parts, do the following:
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 on page 5.
2. Remove the six screws (21) that hold the cover (1)
together, and open the cover.
3. Remove the trigger (15) from the valve stem
(16b*).
4. Unscrew the valve seat (16e*), remove the valve
seat and valve stem assembly (16b*) from the
meter housing, and pull the valve stem assembly
out of the valve seat.
5. Discard the old valve stem assembly (16b*) and
the spring (16a*).
6. Apply lubricant to all new parts. Place the new
spring (16a*) in the new valve stem assembly
(16b*), push the new valve stem assembly back
into the valve seat (16e*), place the valve stem
assembly, seat and spring into the meter housing,
thread the valve seat into the meter housing, and
torque to 140 to 150 in-lb (16 to 17 N.m).
NOTE: Take care that the spring (16a*) does not
get pinched when you install the valve stem
assembly (16) into the meter housing.
7. Place the trigger (15) on the valve stem assembly
(16b*), put the cover (1) together, thread in the six
screws that hold the cover together, and torque to
7 to 10 in-lb (0.8 to 1.1 N.m).
Replacing the Automatic Nozzle
The automatic nozzle (5b, 6b, or 7b) is not serviceable.
If it leaks, replace it as follows:
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 on page 5.
2. Remove the old nozzle from the extension with an
open-end adjustable wrench on the flats of the
nozzle bushing. See below.
nozzle bushing
TI0327
3. Thread the new nozzle (5b, 6b, or 7b) onto the
extension, and tighten it firmly with an open-end
adjustable wrench.
NOTE: Only tighten the nozzle with the wrench
on the flats of the nozzle bushing. Do not
disassemble the bushing from the nozzle.
Disassembly will affect the performance of the
nozzle.
WARNING
Do not use the old Graco 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.

18 308735
Parts List
Ref.
No. Part No. Description Qty.
1 238551 COVER/CONTROL 1
2 191351 COVER, battery 1
3 240416 SWIVEL, straight 1
4 191286 SWIVEL COVER, black
191287 SWIVEL COVER, red
191288 SWIVEL COVER, blue
191289 SWIVEL COVER, green
191290 SWIVEL COVER, yellow 1
5 239949 NOZZLE ASSEMBLY
For Models 238501 & 238503
(includes 5a through 5c)
5a 191036 .TUBE; 75_bend 1
5b 239829 .NOZZLE, automatic 1
5c 113419 .NUT, seal; 3/8 in.–18 NPT 1
6 239951 NOZZLE ASSEMBLY
For Models 238502 & 238504
(includes 6a through 6b)
6a 238370 .HOSE, flexible; 3/8 in. coupled 1
6b 239829 .NOZZLE, automatic 1
6c 113419 .NUT, seal; 3/8 in.–18 NPT 1
6d 155699 .ELBOW, street 1
7 239950 NOZZLE ASSEMBLY
For Models 238505 & 238506
(includes 7a through 7d) 1
7a 191038 .TUBE, 15_bend; 3/8 in. 1
7b 239829 .NOZZLE, automatic 1
7c 113419 .NUT, seal; 3/8 in.–18 NPT 2
7d 155699 .ELBOW, street 1
Ref.
No. Part No. Description Qty.
8 113716 BATTERY; standard 9V, alkaline 1
15 191046 TRIGGER 1
16 240453 KIT, valve repair
(includes 16a to 16e, 25, and 27)
16a* SPRING, compression 1
16b* VALVE STEM ASSEMBLY 1
16c* O-RING, packing 1
16d* O-RING, packing 1
16e* SEAT, valve 1
21 113412 SCREW, pan-head; 6–19x3/4 6
24Y290205 LABEL, warning 1
25* 114017 FILTER 1
27* 109018 O-RING 1
28 243758 GUARD, impact 1
*These parts are included in Valve Repair Kit
240453, which can be ordered separately.
YExtra Warning labels are available for free.

19308735
Parts Drawing
7119B
1Torque to 7 to 10 in-lb (0.8 to 1.1 N.m).
1
meter housing
(not available for sale)
21 1
2Torque to 140 to 150 in-lb (16 to 17 N.m).
2
3
4
25*
1
15
24
3Apply lubricant when reassembling.
8
6b
5a 5c
4
4
Torque to 20 to 25 ft-lb (27 to 34 N.m).
7c
7a
7d
solenoid
(not available
for sale)
27*
16
2
3
6d
7c
*16a
*16b
*16c
*16d
*16e
28
*These parts are included in Valve Repair Kit
240453, which can be ordered separately.
6c
This flexible extension can also
be threaded directly into the
meter outlet without the street
elbow (6d) or sealing nut (6c).
6a
7b 5b

20 308735
Technical Data
Flow range*0.26 to 5 gpm (1 to 18.9 lpm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating pressure range 45 to 1000 psi (0.29 to 7 MPa, 2.9 to 69 bar). . . . . . . . . . . . . . . . . . . . . . . .
Weight 3 lb (1.36 kg). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Units of measurement factory-set in quarts or liters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
maximum totalizer amount = 99999 gallons or liters
maximum recorded dispensed volume = 999.99 units
maximum preset volume = 99.9 units
Inlet 1/2 npt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outlet 3/8 npt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating temperature range 32_F to 120_F (0_C to 49_C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –30_F to 120_F (–34_C to 49_C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery** standard 9 volt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected battery life in typical shop environment 6 months. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wetted parts zinc, stainless steel #304, ZeniteR,. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
carbon steel, polyurethane, nitrile rubber
Fluid compatibility lubricating oils, antifreeze mixtures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Meter valve assembly pressure loss
at 1.5 gpm (5.7 lpm) with 30-weight oil at 70_F (21_C) 17 psi (117 kPa, 1.2 bar). . . . . . . . . . . . . . .
Accuracy{+/–0.5 percent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repeatability}+/–0.15 percent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*Tested in No. 10 motor oil. Flow rates vary with fluid pressure and viscosity.
** Battery required to meet safety approvals: DuracellRMN1604 or EvereadyREN22, 522
{At 2.5 gpm (9.5 lpm), at 70_F (21_C), with 10-weight oil, and 1 gallon dispensed. May require
calibration; out-of-box accuracy is +/–1.25 percent.
}At 2.5 gpm (9.5 lpm), at 70_F (21_C), with 10-weight oil, and 1 gallon dispensed.
TeflonRand ZeniteRare registered trademarks of the DuPont Company.
DuracellRis a registered trademark of Duracell Inc.
PanasonicRis a registered trademark of Panasonic Industrial Co.