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Alemite 7835-SDTR1 Service Manual

Alemite 7835-SDTR1 Service Manual

Medium-pressure stainless pump

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1-800-548-1191-http://www.partdeal.com-info@partdeal.com
Medium-Pressure Stainless Pump
Description
NOTE: The components within the fluid-wetted path of
this pump are stainless steel and Teflon.
This pump is tested in mineral oil. Flush the pump thor-
oughly with a solvent compatible with the product dis-
pensed as required.
The major components of pump model 7835-SDTR1 consist of a
reciprocating air motor and a double-acting pump tube. The pump
tube is divorced from the motor which:
• protects the motor from product contamination
• allows separation without product leakage
The pump tube is designed to enable the delivery of a variety of
materials. This medium-pressure (5:1) pump includes a bung adapter
[2 " NPTF (m)] that allows operation directly from original 55-gallon
(200/205 l) drums
Specifications
Air Motor
Piston
Diameter x Stroke
In
Cm
3 x 1-5/8
7.6 x 4.1
For details on the air motor, refer to Service Guide SER 338905
See Figure 2 for performance curves.
Pump Tube
Max.
Max. Free-Flow
Material
Delivery/Minute *
Material
Pressure
Outlet
psi
Bars Gallons
3/4 " NPTF (f) 1000
69
4.5
See Figure 2 for performance curves.
* SAE 10 oil at 75 ° F (24 ° C) and 100 psi [6.9 Bars] air pressure.
Table 1 Pump Model 7835-SDTR1 Specifications
This document contains confidential information that is the property of Alemite Corporation
670653
and is not to be copied, used, or disclosed to others without express written permission.
Service Guide
CAUTION
Maximum
Air Pressure
Air Inlet
psi
1/4 " NPSI (f)
200
Recommended
Continuous
Delivery/Minute
Liters
Gallons Liters
17
2.75
10.4
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
www.alemite.com
©
Copyright
2000 by Alemite Corporation
Bars
13.8
Displacement
per Cycle
3
3
In
Cm
3.6
59
Figure 1 Pump Model 7835-SDTR1
7835-SDTR1
SER 7835-SDTR1
Revision 8-00

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Summary of Contents for Alemite 7835-SDTR1

  • Page 1 PO Box 473515, Charlotte, North Carolina 28247-3515 www.alemite.com © Copyright 2000 by Alemite Corporation SER 7835-SDTR1 This document contains confidential information that is the property of Alemite Corporation 670653 Revision 8-00 and is not to be copied, used, or disclosed to others without express written permission.
  • Page 2: Performance Curves

    338984 322590-4 * * This cover contains an inspection/fill port Table 2 Pump Model 7835-SDTR1 Accessories Performance Curves A pump’s ability to deliver material is based on the pressure (psi/Bars) and quantity (cfm/lpm) of air supplied to the motor and the amount of material discharge [back] pressure to be overcome within the system.
  • Page 3 Washer, Flat, 1/4 ’’ 338905 Screw, 1/4 ’’ -20 x 7/8 ’’ 380667 Legend: Part numbers left blank (or in italics) are not available separately Figure 3-A Medium-Pressure Stainless Pump Model 7835-SDTR1 - Exploded View Alemite Corporation Revision 8-00 1-800-548-1191-http://www.partdeal.com-info@partdeal.com...
  • Page 4 SER 7835-SDTR1 Medium-Pressure Stainless Pump Figure 3-B Medium-Pressure Stainless Pump Model 7835-SDTR1 - Exploded View Revision 8-00 Alemite Corporation 1-800-548-1191-http://www.partdeal.com-info@partdeal.com...
  • Page 5 Medium-Pressure Stainless Pump SER 7835-SDTR1 Item Numeric Order Part No. Description Notes Part # (Item #) (14) 322321 Nut, Packing (Stainless Steel) 171120 322323 Ring, Female Adapter (Stainless Steel) 171701-80 (34) 326069-24 Ring, Packing, 1-1/4 ’’ ID x 1-3/4 ’’ OD (Teflon)
  • Page 6 SER 7835-SDTR1 Medium-Pressure Stainless Pump Revision 8-00 Alemite Corporation 1-800-548-1191-http://www.partdeal.com-info@partdeal.com...
  • Page 7 Medium-Pressure Stainless Pump SER 7835-SDTR1 Overhaul Pump Tube Assembly Outlet Body Assembly NOTE: Refer to Figures 3-A and 3-B for component identification on all overhaul 5. Unscrew Packing Nut (9) from the Outlet Body. procedures. • Use Adjustment Bar (6).
  • Page 8: Clean And Inspect

    SER 7835-SDTR1 Medium-Pressure Stainless Pump Clean and Inspect 4. Install Packing Rod (15) [threaded end first] into the top of the Outlet Body. • Allow the threaded end to extend from the bottom of 1. Clean all metal parts in cleaning solvent. The solvent the Outlet Body.
  • Page 9 Medium-Pressure Stainless Pump SER 7835-SDTR1 22. Screw the Cylinder assembly [with Loctite 242] into the Outlet Body. • Do not tighten at this time. 23. Install Bung Adapter (32) onto the Cylinder. Refer to Figure 3-B Parts List for Parts Identification Foot Valve Body 24.
  • Page 10: Installation

    SER 7835-SDTR1 Medium-Pressure Stainless Pump 17. Operate the control valve into a container. Initial Prime 18. Shut off the control valve. 1. Place the pump in the material to be dispensed. • Visually inspect the pump for external leaks. • The pump should not cycle more than once or twice 2.
  • Page 11: Troubleshooting Chart

    Medium-Pressure Stainless Pump SER 7835-SDTR1 Troubleshooting Chart Pump Indications Possible Problems Solution Pump does not cycle 1. Packing Rings (11) too tight 1. Adjust Packing Nut (9) 2. Air motor not operating properly 2. Inspect air motor and rebuild or replace 3.
  • Page 12 SER 7835-SDTR1 Medium-Pressure Stainless Pump Every effort has been made to ensure that the information within this publication is accurate. Please send any comments or inquiries to chris.schrader@btrinc.com Revision 8-00 Alemite Corporation 1-800-548-1191-http://www.partdeal.com-info@partdeal.com...