DH Instruments SPLT User manual

© 1998-2009 DH Instruments, a Fluke Company
Self Purging Liquid Trap
(SPLT™)
User’s Manual

© 1998-2009 DH Instruments, a Fluke Company
High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases can be
released unexpectedly and with extreme force. High pressure systems should be assembled and operated
only by personnel who have been instructed in proper safety practices.
© 1998 - 2009 DH Instruments, a Fluke Company All rights reserved
Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or
by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments 4765 East Beautiful
Lane Phoenix AZ 85044-5318 USA.
DH Instruments, a Fluke Company makes sincere efforts to ensure accuracy and quality of its published materials; however, no warranty,
expressed or implied, is provided. DH Instruments, a Fluke Company disclaims any responsibility or liability for any direct or indirect
damages resulting from the use of the information in this manual or products described in it. Mention of any product does not constitute an
endorsement by DH Instruments of that product. This manual was originally composed in English and was subsequently translated into
other languages. The fidelity of the translation cannot be guaranteed. In case of conflict between the English version and other language
versions, the English version takes precedence.
DH Instruments, a Fluke Company, DH , DHI, PPC, PPC2, PPC3, PPC, and PPC2 AF are trademarks, registered and otherwise.
100521
3152142 REV 103
Printed in the USA.

TABLE OF CONTENTS
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TABLE OF CONTENTS ..................................................................I
TABLES .....................................................................................II
FIGURES....................................................................................II
ABOUT THIS MANUAL ................................................................III
1. INTRODUCTION..................................................................... 1
1.1 PRODUCT OVERVIEW....................................................................................................................................... 1
1.2 SUBASSEMBLY DESCRIPTION AND LOCATION........................................................................................... 1
1.3 SPECIFICATIONS............................................................................................................................................... 2
2. INSTALLATION ..................................................................... 3
2.1 PNEUMATIC........................................................................................................................................................3
2.2 ELECTRICAL ......................................................................................................................................................4
3. OPERATION.......................................................................... 5
3.1 GENERAL OPERATING INSTRUCTIONS......................................................................................................... 5
4. MAINTENANCE...................................................................... 7
4.1 GENERAL............................................................................................................................................................ 7
4.2 REMOVING AND INSTALLING THE SPLT FILTER.......................................................................................... 7
4.3 SPLT EXHAUST VALVE REMOVAL AND REPLACEMENT............................................................................ 8
4.4 OVERHAUL......................................................................................................................................................... 8
4.5 PARTS................................................................................................................................................................. 9

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Table 1. Parts Listing ...........................................................................................................................................9
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Figure 1. SPLT (Overall View) .............................................................................................................................1
Figure 2. PPC with SPLT and DUT......................................................................................................................3
Figure 3. Front View (Left) and Side View (Right)................................................................................................9

ABOUT THIS MANUAL
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Manual Conventions
(CAUTION) is used in manual to identify user warnings and cautions.
(NOTE) is used in the manual to identify operating and applications advice and additional explanations.

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1. INTRODUCTION
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1. . I IN
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1.1 PRODUCT OVERVIEW
The SPLT is a free standing accessory designed to protect the PPC from liquid contamination returning from
the system or device under test.
The SPLT is made up of a stainless steel body with an internal X-Type coalescing filter and a bottom drain port
fitting with an electrically actuated purge valve. The filter and valve assembly is installed in a mounting stand.
1.2 SUBASSEMBLY DESCRIPTION AND LOCATION
1. Purge Tube - Exhaust liquids and contaminants 3. Pressure Connections – 1/4 in. NPT F to test and to
PPC
2. Exhaust Valve - Solenoid valve to release pressure 4. Electrical Connection - Terminal block connections to
PPC valve driver for activation of exhaust valve
Figure 1. SPLT (Overall View)

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1.3 SPECIFICATIONS
Pressure Connections 1/4 in. NPT F
Power Requirements Apply 12 V to actuate valve, 6 watts
Weight 1.7 kg (3.8 lb)
Dimensions 10 cm H x 10 cm W x 17.5 cm D (3.9 in. x 3.9 in. x 6.9 in.)
Maximum Working Pressure 2 000 psi
Maximum Differential Across Filter 80 psi
Operational Capacity of Filter Body 10 cc

2. INSTALLATION
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2.1 PNEUMATIC
Figure 2. PPC with SPLT and DUT
Be sure SPLT is at low point of pneumatic system.
The SPLT is intended to collect and exhaust liquid contaminants that may be present in the device or system
under test so that they do NOT return to the PPC.
The SPLT is installed in the test connection line at a low point between PPC and the device or system under
test. The SPLT pressure connections are 1/4 in. NPT female.
Teflon™ tape or another sealing material should be used to assure leak free connection of adaptors
installed in the SPLT pressure connections.
Proper SPLT operation is dependent on the gas flowing through it in the correct direction. Make sure to connect
the SPLT to the device or system under test and the PPC following the connector port labels on the SPLT.
Connect the SPLT electrically to the PPC rear panel DRIVER connection and to the SPLT terminal block (see
Section 2.2).
The SPLT must be mounted vertically with the purge valve at the bottom to perform properly. The SPLT MUST
be at a lower point in the system than the PPC and/or the device under test. In operation, liquid contaminants
collected from the device or system under test will be exhausted through the SPLT purge valve.

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Liquid contaminants will be forcibly ejected from the SPLT purge tube. Provision for collecting the purged
liquids should be considered when installing the SPLT.
Excessively dirty or wet filter elements can adversely affect pressure control.
2.2 ELECTRICAL
In order to take advantage of the automatic purging feature of the PPC, the SPLT valve MUST be connected to
the PPC external driver #8.
Connect like this if drivers connector with attached cable was included with SPLT:
Connect drivers connector to DRIVERS connector on back panel of PPC. Attach the two wires to the
terminal block on the SPLT
Connect like this if you have SPLT without drivers connector:
Solder (2) 24 gauge wires of desired length to the 12-pin connector provided with the PPC. Connect
(1) wire to pin L and the other to pin B. Connect drivers connector to DRIVERS connector on back
panel of PPC. Attach the other end of these wires to the terminal block on the SPLT.
Polarity is NOT significant to the operation of the purge valve.

3. OPERATION
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3.1 GENERAL OPERATING INSTRUCTIONS
See the section on Installing a Self Purging Liquid Trap in the PPC Operation and Maintenance manual.

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4. MAINTENANCE
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4.1 GENERAL
The maintenance of the SPLT consists of cleaning or replacing the internal coalescing filter. A dirty filter should
be rinsed with a degreasing agent to remove oil and particulate matter. A filter with physical damage should be
replaced.
4.2 REMOVING AND INSTALLING THE SPLT FILTER
See Section 4.5 for part number and figures referred to in the filter replacement procedure.
Remove power and pressure connections prior to disassembly.
The procedure for replacing the coalescing filter in the SPLT is as follows:
Disconnect pressure tubing to the SPLT if necessary.
Disconnect power leads to the exhaust valve solenoid (3137053).
Disconnect drain tube (3232357) from elbow adaptor (3133040).
Unscrew lower housing of filter using flats on the lower housing.
Lower the housing with attached valve and fittings through the slot in the mounting bracket.
Remove filter, clean cavity (3136996).
Install new filter.
Re-assemble SPLT.
Leak Check.

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4.3 SPLT EXHAUST VALVE REMOVAL AND REPLACEMENT
See Section 4.5.
•Disconnect pressure tubing to the SPLT.
•Disconnect power leads to the exhaust valve solenoid (3137053).
•Remove solenoid valve from SPLT body (3136996).
•Remove fittings (3137066, 3133040) and drain tube (3232357) from exhaust valve.
•Install fittings (3137066, 3133040) and drain tube (3232357) onto the new exhaust valve.
•Reinstall exhaust valve onto SPLT body (3136996).
•Leak check assembly.
Any or all of the following items may be included as part of SPLT maintenance and overhaul:
•Clean or change filter (see Section 4.1).
•Clean internal portions of SPLT body using a degreasing agent.
•Check exhaust valve solenoid power leads.
•Check tightness of fittings on SPLT exhaust solenoid valve.
•Check drain tube and replace as necessary.
4.4 OVERHAUL
Any or all of the following items may be included as part of SPLT maintenance and overhaul:
•Clean or change filter (see Section 4.1).
•Clean internal portions of SPLT body using a degreasing agent.
•Check exhaust valve solenoid power leads.
•Check tightness of fittings on SPLT exhaust solenoid valve.
•Check drain tube and replace as necessary.

4. MAINTENANCE
Page 9 © 1998-2009 DH Instruments, a Fluke Company
4.5 PARTS
Figure 3. Front View (Left) and Side View (Right)
Unless otherwise specified, Seal NPT Connections using Teflon™ tape.
Table 1. Parts Listing
PART NUMBER PREVIOUS DHI
PART NUMBER DESCRIPTION QTY REQUIRED
2678004 100970-Z Hex nut, M 3 1
3232357 101392-Z Drain tube, 1/8 in. O.D. 1
3153533 102088-Z Split lock washer 2
3153741 102461-Z Label 1
3115728 122587-Z Label 1
3133040 100321 Elbow adaptor 1
3133921 101008 Allen screw, M3 X 20 1
3134409 101468 Rubber grommet 6
3136981 102501 Liquid trap 1
3136996 102502 Filter 1
3137053 102514 12 VDC solenoid valve 1
3137066 102516 Reducer, adaptor 1
3137142 102528 Terminal block 1
3137156 102530 Allen screw, 1/4-20 X 1/2 2
3146329 122541 Mounting bracket 1

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