PENBERTHY
MODEL MGS-314L SERIES LEVEL CONTROL SWITCH
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.
© 2019 Emerson. All Rights Reserved.
VCIOM-03389-EN 20/04
PRODUCT WARRANTY
Emerson warrants its products as designed
and manufactured to be free of defects in
material and workmanship for a period of one
year after the date of installation or eighteen
months after date of manufacture, whichever
is earliest. Emerson will, at its option, replace
or repair any products which fail during the
warranty period due to defective material or
workmanship.
Prior to submitting any claim for warranty
service, the owner must submit proof of
purchase to Emerson and obtain written
authorization to return the product. Thereafter,
the product shall be returned to Emerson, with
freight prepaid.
This warranty shall not apply if the product has
been disassembled, tampered with, repaired
or altered outside of the Emerson factory, or
if it has been subjected to misuse, neglect or
accident.
TABLE OF CONTENTS
Product Warranty .......................................... 1
1. Introduction ................................................... 1
2. Specifications/Approvals .............................. 2
2.1 2.1 Enclosure .......................................... 2
2.2 Switch ...................................................... 2
2.3 Approvals ................................................ 2
3. Theory of Operation ....................................... 2
4. Installation ..................................................... 3
4.1 Unpacking ............................................... 3
4.2 Mounting the switch ............................... 3
4.3 Wiring connection................................... 3
5. Set-up ............................................................. 4
5.1 Initial test ................................................ 4
6. Troubleshooting ............................................ 4
6.1 Introduction ............................................ 4
6.2 Switch test .............................................. 4
7. Disposal at End of Useful Life ...................... 4
8. Telephone Assistance ................................... 4
Emerson's responsibility hereunder is limited
to repairing or replacing the product at its
expense.
Emerson shall not be liable for loss, damage,
or expenses directly or indirectly related to the
installation or use of its products, or from any
other cause or for consequential damages. It
is expressly understood that Emerson is not
responsible for damage or injury caused to
other products, building, property or persons,
by reason of the installation or use of its
products.
This is Emerson's sole warranty and in lieu of
all other warranties, expressed or implied which
are hereby excluded, including in particular all
warranties of merchantability or fitness for a
particular purpose.
This document and the warranty contained
herein may not be modified and no other
warranty, expressed or implied, shall be made
by or on behalf of Emerson unless modified or
made in writing and signed by the company's
president or a vice president.
1 INTRODUCTION
The instructions in this manual pertain to the
Penberthy Model MGS-314L Series magnetic
level gauge switch.
The Model MGS-314L Series magnetic level
gauge switch is designed to detect the passage
of the float in a Multiview™ magnetic liquid
level gauge, at a specific location. The switch
consists of a bi-stable latching reed switch
encased in a watertight enclosure.
Tables and Figures
Table 1
Wire conditions at different
switch orientations .......................... 4
Figure 1 MGS-314L switch positions ............ 2
Figure 2 Control drawing CSA approved
explosion-proof for
MGS-314L (7E741-008) ................... 5
Figure 3 Control drawing CSA approved
intrinsically safe for
MGS-314L (7E742-008) ................... 6
Figure 4 Control drawing ATEX/
IECEx certified explosion-proof
for MGS-314L (7E741-010) ............. 7
Figure 5 Control drawing ATEX/
IECEx certified intrinsically safe
for MGS-314L (7E741-010) ............. 8
