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Certification – Groth 7678 User Manual

Page 2

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2

Table of Contents

Section

Page

Introduction

2

Certification

2

Integrated Temperature Sensor

2

Design & Function

2

Installation

3

Maintenance

4

Model Identification

6

Product Limited Warranty

6

Tables

Bolt torque

3 & 4

MESG tables

5

Attachments

ATEX Declaration of Conformity

Cert. # IBExU12ATEX2019 X

Drawings SCH-7678-01

INTRODUCTION

This

manual

is

intended

to

provide

recommended procedures and practices for
installation, operation and maintenance of the
Groth Model 7678 end of line deflagration flame
arrester. Any standard procedures and practices
developed for a specific plant or process should
supersede this manual. Although this manual
cannot

cover

all

possible

contingencies,

following these guidelines will provide safe,
reliable deflagration flame arrester service.

The arrester shall be treated as a safety device
and must be maintained by a knowledgeable
repair technician. Carefully read and understand
this manual before installing or servicing this
product.

For information not contained in this manual,
please contact:

Groth Corporation

13650 North Promenade Blvd.

Stafford, TX 77477

281-295 6800

281-295-6999 Fax

CERTIFICATION

Groth Model 7678 end of line deflagration flame
arresters are manufactured in compliance with
the ATEX Directive 94/4/EC, as confirmed by
Certificate

IBExU12ATEX2019

X.

This

certification covers the following sizes, materials
and limits for use.

Sizes included are all those shown on drawing
SCH-7678-01.

Materials

included

are

all

materials that satisfy the strength and pressure
ratings specified on these drawings.

These arresters are suitable for end of line

deflagrations and short time burning.

*

Each temperature sensor with respect to connection size

has a trigger emergency function within half of the burn
time.

Must be installed with integrated temperature
sensor(s), Groth P/N 93219005 or equal.

INTEGRATED TEMPERATURE SENSORS

Flame arresters for short time burning must
be fitted with one or more integrated
temperature sensors, taking into account the
intended orientation of the flame arrester.
These arresters may be used in systems and
situations where the flow of the flammable
mixture can be stopped within one minute.

Groth model 7678 flame arresters were
tested with one Groth integrated temperature
sensor, P/N 93219005, installed on the
ignition side. All arresters are manufactured

Explosion Gas Group

IIA

MESG of vapor

mixture

0.036” [0.90 mm]

Operating

Temperature

–4

o

F to 140

o

F [-20

o

C to 60

o

C]

Maximum Allowable Burn

Time

*Temperature

Sensor

Emergency

Function

Connection

Size

Burn Time

Trigger Time

2”-12”

(50-300mm)

2 Minutes

60 Second