Graco 255751 User manual

Instructions
LDM5 (Standard) & LDP5 (Preset)
Electronic Metered Dispense Valves 312668D
- For metered dispense of oils and antifreeze -
Not for use in explosive atmosphere locations.
1000 psi (7 MPa, 69 bar) Maximum Working Pressure
5 gpm (19 lpm) Maximum Flow Rate
LDM5 Model 255751: Includes Flex Extension
LDM5 Model 256215: Includes Rigid Extension, Impact
Guard, Swivel Cover
LDP5 Model 255277: Includes Flex Extension
LDP5 Model 256216: Includes Rigid Extension, Impact
Guard, Swivel Cover
Patent Nos.
1
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
6,357,300* 77664
D382,500 ZL97102971.7*
6,047,906 1025804
*Applies to LDP5 Preset Electronic Dispense Valve Only
NOTICE
This dispense valve:
• is designed to dispense petroleum-based lubricants
and antifreeze only. Do not dispense windshield
washer solvent with this dispense valve.
• is designed for indoor use only.
•isnot designed for in-line installation.
LDM5 Model 256215
LDM5 Model 255751 LDP5 Model 255277
LDP5 Model 256216
ti12062a
ti12063a
ti12064a
ti12065a

Warnings
2312668D
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
SKIN INJECTION HAZARD
High-pressure fluid from dispense valve, hose leaks, or ruptured components will pierce skin. This may
look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point dispense valve at anyone or at any part of the body.
• Do not put your hand over the end of the dispense nozzle.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables 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 applicable safety regulations.
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground all equipment in the work area.
• Use only grounded hoses.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Installation
312668D 3
Installation
Typical Installations
FIG. 1 shows a typical hose reel installation. Dispense
valves can also be installed on a console as shown in
Fig. 2.
The typical installation shown in Fig. 1 is only a guide. It
is not a complete system design. Contact your Graco
distributor for assistance in designing a system to suit
your needs.
Mounting Bracket
Mounting bracket 196471 is available for resting dis-
pense valve on a console. See Fig. 2.
KEY DESCRIPTION
A Metered dispense valve
B Fluid shut–off valve
CHose
D Hose reel fluid inlet hose
E Hose reel
A Thermal Relief Kit (not shown) is required. The kit
will vary by pump selected. See Parts, page 26 for a
list of available kits.
FIG. 1
BD
E
C
A
ti12081a
NOTICE
• Do not use this dispense valve on non-Graco con-
soles. The trigger could be inadvertently pressed
while the dispense valve is stowed.
• 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 which could damage the
meter housing cover.
NOTICE
Do not obstruct the dispense valve trigger and do not
set the unit down resting on its trigger or it might not
stop dispensing.
FIG. 2
mounting
bracket
196471
ti0274

Installation
4312668D
Pressure Relief Procedure
The equipment stays pressurized until pressure is man-
ually 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 you:
• are instructed to relieve pressure.
• check, clean, or service any system equipment.
• install or clean fluid nozzles or filter.
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.
Grounding
Proper grounding is an essential part of maintaining a
safe system. The movement of fluids through the dis-
pensing system generates static electricity. Static elec-
tricity can cause fumes to ignite, resulting in explosion
and fire. To reduce the risk of static sparking, ground all
system components per local and national electrical
codes. Refer to user manuals for pump and other sys-
tem components to ground the following:
•Pump: Follow manufacturer’s recommenda-
tions.
•Air and Fluid hoses: Use only grounded
hoses.
•Air compressor: Follow the manufacturer’s
recommendations.
•Fluid supply container: Follow the local code.
To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of valve
firmly to side of grounded metal pail, then trigger valve.
Pre–Installation Procedure
1. Install the battery. See Replacing the Battery on
page 28.
2. Follow the Pressure Relief Procedure.
3. Close the shut–off valve (B, FIG. 1, page 3).
4. Ground the hose and reel or console. See
Grounding.
Installation Procedure
If this is an existing installation, go to step 7. Steps 1 - 6
are the Flushing Procedure.
1. Close the fluid shutoff valve (B, FIG. 3) at each dis-
pense position.
2. Make sure:
• the main fluid outlet valve at the pump is closed,
• the air pressure to the pump motor is adjusted,
• the air valve is open.
3. Slowly open main fluid valve.
Leave a minimum of two engaged threads bare
when using PTFE tape. The bare threads ensure a
ground is maintained.
NOTICE
If this is a new installation or if there is contaminated
fluid in the lines, flush the lines before you install the
metered valve. Contaminated lines could cause the
valve to leak.
FIG. 3
B
ti12081a

Installation
312668D 5
4.
a. Place the hose end (with no dispense valve
connected) into a container for waste oil.
b. Secure the hose in the container so it will not
come out during flushing.
c. If you have multiple dispense positions, first
flush the dispense position farthest from the
pump, then work your way toward the pump.
5. Slowly open the shut–off valve (B, FIG. 4) at the dis-
pense position. Flush out a sufficient amount of oil
to ensure that the entire system is clean. Close the
valve.
6. Repeat step 5 at all other dispense positions.
Connecting Hose to Meter
1. Follow the Pressure Relief Procedure, page 4.
2. Slide the swivel cover (34) onto the hose, small end
first, before connecting hose fitting to swivel (4) (FIG.
5).
3. Apply thread sealant to the male threads of the hose
fitting. Thread the hose fitting into the swivel (4) and
tighten firmly (FIG. 5).
FIG. 4
B
ti12081a
FIG. 5
Make sure you let sealant cure to the manufac-
turer’s recommendations before you let fluid into
the system.
4
hose
fitting
ti0269
34

Installation
6312668D
Installing Extension and Nozzle on Meter
1. Thread the fitting (26c) onto the extension (26a).
2. Thread extension fitting (26c) into meter outlet at
least three full turns. (FIG. 6).
3. Thread new nozzle (26b) onto extension. With an
open-end, adjustable wrench, tighten it firmly.
4. Open all dispense position shut-off valves (B, FIG. 7)
and start the pump to pressurize the system. See
Operation, (LDM5 Meters - page 11; LDP5 Meters -
page 20), for proper operation of meter.
• 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.
FIG. 6
NOTICE
Do not use a twist/lock or manual shut-off nozzle. You
must use an automatic nozzle on the meter or the
meter could be damaged.
Only tighten nozzle with the wrench on the flats of
the nozzle bushing. Do not disassembly the
bushing from the nozzle. Disassembly will affect
the performance of the nozzle.
26c
26a
26b
26c
26a
26b
ti12063a
ti12062a
FIG. 7
B
ti12081a

LDM5 Meter Setup and Operation Instructions
312668D 7
LDM5 Meter Setup and Operation Instructions
Setup
Terms
The following terms are shown on the display and/or
used often in this instruction manual.
•R-TOTAL: Resettable Total
Shows the cumulative amount that has been dis-
pensed. Can be reset to zero.
•TOTAL: Non–Resettable Total
Shows the cumulative amount that has been dis-
pensed for the life of the unit. Cannot be reset.
•Standard Dispense Mode
Dispense mode in which display counts up from
zero or from where it recently stopped.
•ASLEEP / AWAKE Mode
Asleep is a battery–saving mode in which the dis-
play goes blank after 45 seconds of inactivity. The
display comes Awake from sleep mode when you
press any button on the keypad or squeeze the trig-
ger to dispense fluid.
Keypad Buttons (FIG. 8)
•TOTAL*
Displays the resettable total, non–resettable total,
and calibration factor.
•RESET*
Resets the displayed amount to zero or press to
enter the Standard Dispense Mode (see Terms).
* Press the hold Reset and Total
buttons simultaneously to dis-
play Setup Menus (page 8).
FIG. 8
All buttons are disabled while fluid is being
dispensed.
GAL
QTSPTS
LITERS
R-TOTAL
AUTO
ti12043A

LDM5 Meter Setup and Operation Instructions
8312668D
Setup Menus (FIG. 9)
1. If the display is blank (asleep), wake it up by press-
ing any button on the keypad (FIG. 9).
2. Press and hold the Total and
Reset buttons simultaneously
for approximately six (6) sec-
onds to enter the Setup
Menus (FIG. 9).
3.
There are three (3) Setup Menus available, stored in
a preset order.
a. The first screen displayed is the Resettable
Total Menu. When this menu is displayed,
R-TOTAL will blink on the screen (FIG. 10).
b. Press and hold Reset but-
ton to display Units of
Measure Menu. When
this menu is displayed the
last set Unit of Measure-
ment blinks on the screen
(FIG. 11).
c. Press and hold Reset button again to display
Calibration Menu. When this menu is displayed
CAL blinks on the screen (FIG. 12).
The total that is displayed when you leave each
menu is the total that is stored.
FIG. 9
During the first 4 seconds all segments display.
Then for 2 seconds the software version number
displays.
GAL
QTSPTS
LITERS
R-TOTAL
AUTO
ti12044a
The following sections of this manual provide
instructions for using the Setup Menus.

LDM5 Meter Setup and Operation Instructions
312668D 9
Resettable Total (FIG. 10)
Resets dispensed total on screen to zero or stores dis-
played dispense total. The resettable total accumulates
until the next time it is manually reset.
1. If Resettable Total Menu is not already displayed,
complete steps 1 and 2 of Setup Menus section.
2. R-TOTAL blinks indicating you are on the Resetta-
ble Total Menu. The currently stored total and unit of
measurement is displayed (FIG. 10).
3. Do ONE of the following.
a. Press and hold the Total
button. Resettable total is
set to zero (0).
0GAL/QTS/PTS or 0
LITERS is displayed.
b. Press and hold the Reset
button. The zero (0) total
is stored. Units of Mea-
surement Menu displays.
OR
• Press and hold the Reset
button. The currently dis-
played total is stored. The
Units of Measurement
Menu displays.
Units of Measurement (FIG. 11)
Sets unit of measurement to quarts, gallons, pints, or
liters.
1. If the Units of Measurement Menu is not already dis-
played, complete steps 1 - 3 of the Setup Menus
section, page 8.
2. The currently stored unit of measurement: GAL,
QTS, PTS or LITERS blinks indicating you are on
the Units of Measurement Menu screen.
3. To change the unit of measurement, do ONE of the
following.
a. Press and hold Total but-
ton to display next unit of
measurement in the
sequence.
b. When measurement unit
you want to use is dis-
played, press and hold
Reset button. Display
advances to Calibration
Menu.
OR
• Press and hold Reset but-
ton. The currently dis-
played measurement unit
is stored. The Calibration
Menu displays.
FIG. 10
GAL
QTSPTS
LITERS
R-TOTAL
Auto
ti12047a
FIG. 11
ti0272C
GAL
QTSPTS
LITERS
R-TOTAL
AUTO
ti12045a

LDM5 Meter Setup and Operation Instructions
10 312668D
Calibration (FIG. 12)
Recalibrates the meter for dispensing different fluids.
1. If the Calibration Menu is not already displayed,
complete steps 1 - 4 of the Setup Menus section,
page 8.
2. CAL blinks indicating you are on the Calibration
Menu screen. Do ONE of the following.
Use the current calibration.
• Press and hold Reset but-
ton to lock in amount. Dis-
play returns to the
Standard Mode.
OR
Recalibrate meter as follows:
a. If the unit of measurement is gallons, pints,
or quarts, dispense exactly one quart of fluid
into a calibrated 1–quart container.
If the unit of measurement is liters, dispense
exactly one liter of fluid into a calibrated
1–liter container.
For proper calibration, you must dis-
pense the exact amount.
b. Press and hold Total
button until CAL stops
blinking.
c. When CAL starts to
blink again, the display
should show 1.00. The
new calibration is com-
plete.
3. Press and hold the Reset but-
ton. The unit returns to Stan-
dard Dispense Mode.
FIG. 12
GAL
QTSPTS
LITERS
R-TOTAL
CAL
ti12046a
If an error was made during meter recalibration,
repeat Steps a - c of the recalibration process to
recalibrate the meter again.