Groth 7758A - Manual (Page 2)

Table of Contents
Section Page
Introduction 2
Specifications 1
Design & Function 3
Installation 3
Maintenance 4
Model Identification 7
Product Limited Warranty 7
Tables
Bolt torque 4 & 5
MESG tables 6
Attachments
Drawing A-93536
Test reports [as required]
INTRODUCTION
This manual is intended to provide recommended
procedures and practices for installation, operation
and maintenance of the Groth Model 7758A stable
detonation flame arrester without restriction. 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 detonation 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.
Groth Corporation offers repair services for all
products manufactured by the Tank Protection
Division.
For information not contained in this manual, please
contact:
Groth Corporation
A Continental Disc Company
13650 North Promenade Blvd.
Stafford, TX 77477
Phone 281-295-6800
Fax 281-295-6999
CERTIFICATION
Groth Model 7758A stable detonation flame
arresters are manufactured in compliance with the
ATEX Directive 94/4/EC, as confirmed by
Certificate
IBExUXXXXX X . This certification covers
the following sizes, materials and limits for use.
Sizes included are all those shown on drawing A-
93536. Materials included are all materials that
satisfy the strength and pressure ratings specified
on these drawings.
These arresters are suitable for in line unstable
detonations 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
Detonation 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.
Explosion Gas
Group
IIB3
MESG of
vapor mixture
≥ 0.025" [0.65 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
8”-12" 30
Minute
s
15 Minutes
(200 -305 mm)
IOM-7758A
Ref. ID 97895
2