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PENBERTHY 

MODELS LL,LM, LH, ELL, GL, GH PLASTIC MATERIAL CONSTRUCTION JET PUMPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

Emerson.com/FinalControl

Before installation, these instructions must be read carefully and understood

© 2018 Emerson. All Rights Reserved.

VCIOM-04062-EN 19/04

PRODUCT WARRANTY

Emerson warrants its Penberthy products 
as designed and manufactured to be free 
of defects in the material and workmanship 
for a period of one year after the date of 
installation or eighteen months after the 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 otherwise altered outside of the Emerson 
factory, or if it has been subject to misuse, 
neglect or accident.

The responsibility of Emerson hereunder 
is limited to repairing or replacing the 
product at its expense. Emerson shall not be 
liable for loss, damage or expenses related 
directly or indirectly 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, 
buildings, personnel or property, 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 made in 
writing and signed by the company's general 
manager or director of engineering.

TABLE OF CONTENTS

Product warranty ................................................ 1

1  About the manual..................................... 2
2 Introduction ............................................. 2

2.1  Features and specifications ........................ 2
2.2  Design ratings at max. and min. 

operating temperatures .............................. 2

2.3  Application data ........................................... 2

3  Inspection and performance 

confirmation ............................................ 2

3.1  Receiving inspection .................................... 2
3.2  User's rating inspection .............................. 2

4 Installation ............................................... 3

4.1  Special handling of plastic material jet 

pump ............................................................. 3

4.2  Effect of related piping and precautions .... 3

5 Operation ................................................. 4

5.1  Pre-operational check ................................. 4
5.2 Operating ...................................................... 4

6 Maintenance ............................................ 4

6.1  Preventative maintenance ........................... 4
6.2 Troubleshooting ........................................... 4

7 Removal ................................................... 5
8  Disposal at end of useful life ................... 5
9  Telephone assistance .............................. 5
10  Exploded parts drawing ........................... 6

Tables and figures

Table 1  - Design ratings at max. and min. 

operating temperatures ................... 2

Table 2  - Troubleshooting ................................ 4
Figure 1 - Typical installation schematic 

liquid operated pumping liquids ...... 4

Figure 2 - Typical installation schematic gas 

operated pumping gases  ................. 4

Figure 3 - Barstock PVC one-piece section 

cut-away  ........................................... 6

Figure 4 - Barstock exploded cut-away ............ 6
Figure 5 - Welded polypropylene section 

cut-away ............................................ 6

Figure 6 - Molded exploded cut-away ............... 6

Summary of Contents for Penberthy LL

Page 1: ...ponsible for damage or injury caused to other products buildings personnel or property 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...

Page 2: ...n data Models LL LM and LH are liquid operated jet pumps for pumping liquids against low medium and high discharge pressures respectively Models LM and ELL are liquid operated jet pumps for exhausting gases Model ELL is self priming and has greater suction capacity at vacuum Models GL and GH are gas operated jet pumps for pumping gases against low and high discharge pressures respectively Note For...

Page 3: ...rime a centrifugal pump c Throttle suction flow 8 When a gas operated jet pump is used to lift liquids by suction or vacuum the jet pump should be located as close to the level of the liquid as practical However any liquid entrained into the jet pump will cause the jet pump to stop pumping resulting in a possible suction flow reversal 9 Discharge piping should be sized as short as possible and wit...

Page 4: ...ed experienced personnel who are familiar with this equipment and have read and understood all the instructions in this manual DO NOT proceed with any maintenance unless the jet pump has been relieved of all pressure or vacuum has been allowed to reach ambient temperature and has been drained or purged of all fluids Failure to follow these instructions may cause a sudden release of pressure result...

Page 5: ...cur before its disposal A Material Safety Data Sheet MSDS may be required before disposal services accept certain components Metal glass and polymers should be recycled whenever possible Refer to order and relevant technical data sheet for materials of construction 9 TELEPHONE ASSISTANCE If you are having difficulty with your jet pump contact your local Penberthy distributor So that we may assist ...

Page 6: ... logo are trademarks and service marks of Emerson Electric Co All other marks are the property of their respective owners The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their ...

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