Groth 7678 - Manual (Page 2)

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