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MDE-4645B Model 52 Pressure Regulator Valve Installation/Parts Manual · August 2019

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Important Safety Information

Notes: 1) Save this Important Safety Information section in a 

readily accessible location.

2) Although DEF is non-flammable, Diesel is flammable. 

Therefore, for DEF cabinets that are attached to 
Diesel dispensers, follow all the notes in this section 
that pertain to flammable fuels.

This section introduces the hazards and safety precautions 
associated with installing, inspecting, maintaining, or servicing 
this product. Before performing any task on this product, read this 
safety information and the applicable sections in this manual, 
where additional hazards and safety precautions for your task will 
be found. Fire, explosion, electrical shock, or pressure release 
could occur and cause death or serious injury, if these safe 
service procedures are not followed. 

Preliminary Precautions

You are working in a potentially dangerous environment of 
flammable fuels, vapors, and high voltage or pressures. Only 
trained or authorized individuals knowledgeable in the related 
procedures should install, inspect, maintain, or service this 
equipment

.

Emergency Total Electrical Shut-Off

The first and most important information you must know is how to 
stop all fuel flow to the pump/dispenser and island. Locate the 
switch or circuit breakers that shut off all power to all fueling 
equipment, dispensing devices, and Submerged Turbine Pumps 
(STPs).

 

Total Electrical Shut-Off Before Access

Any procedure that requires access to electrical components or 
the electronics of the dispenser requires total electrical shut off of 
that unit. Understand the function and location of this switch or 
circuit breaker before inspecting, installing, maintaining, or 
servicing Gilbarco equipment.

Evacuating, Barricading, and Shutting Off

Any procedure that requires access to the pump/dispenser or 
STPs requires the following actions:

• An evacuation of all unauthorized persons and vehicles from 

the work area 

• Use of safety tape, cones, or barricades at the affected 

unit(s)

• A total electrical shut-off of the affected unit(s)

Read the Manual

Read, understand, and follow this manual and any other labels or 
related materials supplied with this equipment. If you do not 
understand a procedure, call the Gilbarco Technical Assistance 
Center (TAC) at 1-800-743-7501. It is imperative to your safety 
and the safety of others to understand the procedures before 
beginning work.

Follow the Regulations

Applicable information is available in National Fire Protection 
Association (NFPA) 30A; 

Code for Motor Fuel Dispensing 

Facilities and Repair Garages

, NFPA 70; 

National Electrical Code 

(NEC)

, Occupational Safety and Health Administration (OSHA) 

regulations and federal, state, and local codes. All these 
regulations must be followed. Failure to install, inspect, maintain, 
or service this equipment in accordance with these codes, 
regulations, and standards may lead to legal citations with 
penalties or affect the safe use and operation of the equipment.

Replacement Parts

Use only genuine Gilbarco replacement parts and retrofit kits on 
your pump/dispenser. Using parts other than genuine Gilbarco 
replacement parts could create a safety hazard and violate local 
regulations.

Federal Communications Commission (FCC) Warning

This equipment has been tested and found to comply with the
limits for a Class A digital device pursuant to Part 15 of the FCC 
Rules. These limits are designed to provide reasonable 
protection against harmful interference when the equipment is 
operated in a commercial environment. This equipment 
generates, uses, and can radiate radio frequency energy, and if 
not installed and used in accordance with the instruction manual, 
may cause harmful interference to radio communications. 
Operation of this equipment in a residential area is likely to cause 
harmful interference in which case the user will be required to 
correct the interference at his own expense. Changes or 
modifications not expressly approved by the manufacturer could 
void the user’s authority to operate this equipment.

Safety Symbols and Warning Words

This section provides important information about warning 
symbols and boxes.

Alert Symbol 

 

This safety alert symbol is used in this manual and on 

warning labels to alert you to a precaution which must be 
followed to prevent potential personal safety hazards. Obey 
safety directives that follow this symbol to avoid possible injury or 
death

.

Signal Words

These signal words used in this manual and on warning labels 
tell you the seriousness of particular safety hazards. The 
precautions below must be followed to prevent death, injury, or 
damage to the equipment:

DANGER

:

 

Alerts you to a hazard or unsafe practice 

which will result in death or serious injury.

WARNING

Alerts you to a hazard or unsafe practice that 

could result in death or serious injury. 

CAUTION

 

with Alert symbol: Designates a hazard or 

unsafe practice which may result in minor injury.

CAUTION

 

without Alert symbol: Designates a hazard or 

unsafe practice which may result in property or 
equipment damage.

Working With Fuels and Electrical Energy

Prevent Explosions and Fires

Fuels and their vapors will explode or burn, if ignited. Spilled or 
leaking fuels cause vapors. Even filling customer tanks will cause 
potentially dangerous vapors in the vicinity of the dispenser or 
island

.

DEF is non-flammable. Therefore, explosion and fire safety 
warnings do not apply to DEF lines.

The EMERGENCY STOP, ALL STOP, and PUMP 
STOP buttons at the cashier

s station WILL NOT 

shut off electrical power to the pump/dispenser. This 
means that even if you activate these stops, fuel 
may continue to flow uncontrolled. 
You must use the TOTAL ELECTRICAL SHUT-OFF 
in the case of an emergency and not the console

ALL STOP and PUMP STOP or similar keys.

!

WARNING

!

2 – Important Safety Information

!

!

!

Summary of Contents for 52

Page 1: ...Model 52 Pressure Regulator Valve Installation Parts Manual MDE 4645B...

Page 2: ...File Products listed with UL MH4314 All dispensers and self contained pumping units MH6418 Power operated Transfer Pump Models 25 25C 26 27 28 72 72S 72SP 72X 73 and 1820 MH7404 Hand operated Transfe...

Page 3: ...st 2019 Page i Table of Contents 1 Introduction 1 Purpose 1 Abbreviations and Acronyms 1 Warranty 1 2 Important Safety Information 3 3 Installation 7 Installation Precautions 7 Valve Requirements 8 Tr...

Page 4: ...Page ii MDE 4645B Model 52 Pressure Regulator Valve Installation Parts Manual August 2019 This page is intentionally left blank...

Page 5: ...butor The Model 52 Pressure Regulator Valve is a unique control valve developed for use with suction type island dispensers The Model 52 Pressure Regulator can be used for Aboveground Storage Tank AST...

Page 6: ...Introduction Warranty Page 2 MDE 4645B Model 52 Pressure Regulator Valve Installation Parts Manual August 2019 This page is intentionally left blank...

Page 7: ...ect maintain or service this equipment in accordance with these codes regulations and standards may lead to legal citations with penalties or affect the safe use and operation of the equipment Replace...

Page 8: ...ample stopped bleeding by pressure and so on Whether or not a victim has vomited for example if swallowed or inhaled something and so on IMPORTANT Oxygen may be needed at scene if gasoline has been in...

Page 9: ...t off power These keys do not remove AC power and do not always stop product flow Take precautions to avoid igniting fuel Do not allow starting of vehicles in the area Do not allow open flames smoking...

Page 10: ...Page 6 MDE 4645B Model 52 Pressure Regulator Valve Installation Parts Manual August 2019 Important Safety Information This page is intentionally left blank...

Page 11: ...of valve DO NOT experiment with fuel dispensing equipment if you are not sure whether the installation is correct DO NOT install any underground piping without proper swing joints Always use shoulder...

Page 12: ...m piping or the system Installation must locate the shear groove at the same level as the top of the concrete island 1 2 inch 13 mm Installation must include shutoff or gate valve to close the system...

Page 13: ...UNT OF PRODUCT REQUIRED BY THE DISPENSING NOZZLE TO PASS THROUGH THE SUCTION ISLAND DISPENSER THUS PREVENTING THE AIR SEPARATOR FROM OVERFLOWING WHETHER OR NOT THE SUCTION ISLAND DISPENSER IS IN OPERA...

Page 14: ...de requirements 2 Piping fittings seals valves sumps etc to be furnished by customer 3 Warning Safety shear section must be even with the bottom of the pump base SAFETY SHEAR SECTION WHEN ASSEMBLING A...

Page 15: ...in the appropriate parts lists Procedures that require the disassembly of portions of the fueling installation should be performed by qualified service personnel Do not depend upon the repair service...

Page 16: ...Parts Page 12 MDE 4645B Model 52 Pressure Regulator Valve Installation Parts Manual August 2019 Figure 4 1 Model 52 Pressure Regulator Valve...

Page 17: ...uare Ring 2 014273 Square Ring 3 014274 Valve Cover 4 014319 Pressure Relief Valve Assembly 5 063312 Suction Screen Complete Gas 063313 Suction Screen Complete Diesel 6 014262 Pilot Valve Spring 7 014...

Page 18: ...ts List 2019 GASBOY 7300 West Friendly Avenue Post Office Box 22087 Greensboro North Carolina 27420 Phone 1 800 444 5529 http www gasboy com Printed in the U S A MDE 4645B Model 52 Pressure Regulator...

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