Alemite 7886-S5 User manual

7886-S5
Service Guide
SER 7886-S5
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
www.alemite.com
Copyright © 2000 by Alemite Corporation
This document contains confidential information that is the property of Alemite Corporation
670751 and is not to be copied, used, or disclosed to others without express written permission. Revision (8-00)
Medium-Pressure Stainless Material Pump
Description
NOTE: The components within the fluid-wetted path of
this pump are stainless steel and Teflon.
CAUTION
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 7886-S5 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 (11:1) pump contains a bung
adapter [2 " NPTF (m)] that allows operation directly from original
55-gallon (200/205 l) drums.
Specifications
Air Motor
Pump Tube
Piston Diameter / Stroke Air Inlet/Outlet Max. Air Pressure
Inches Centimeters psi Bars
4-1/4 / 4 10.8 / 10.2 3/4 " NPTF (f) 200 14
For air motor data, refer to Service Guide SER 323440-4
See Figure 2 for performance curves.
Material
Outlet
Maximum
Material
Pressure Max. Free-Flow
Delivery/Minute * Recommended
Continuous
Delivery/Minute Displacement
per Cycle
psi Bars Gallons Liters Gallons Liters In 3Cm 3
1 " NPTF (f) 2200 152 13 49.2 7.75 29.3 9.62 157.6
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 7886-S Specifications Figure 1 Medium-Pressure Stainless Pump
Model 7886-S5

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 2 Alemite Corporation
Accessories
Hoists
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. This chart contains curves based on three different air pressures.
The curves relate delivery in gallons (liters) per minute (X axis) to air consumption in cubic feet
(liters) per minute (right Y axis) and to material discharge pressure in psi/Bars (left Y axis).
Air Hose Muffler Cover
55-Gallon 200/205 Liter
317811-5 324170 318040-4 338984
322590-4 *
* This cover contains an inspection/fill port
Table 2 Pump Model 7886-S5 Accessories
Hoist Description Pump Hoist Model
Material Follower
Plate Adapter
35-lb 400-lb
Single-Post 7886-S5 2741-4, * 2742-4, * 2743-4 - 327242 330976
2742-4, * 2743-4 324610 -
* Requires Adapter Plate 322593 Requires Adapter (Attaches the Plate to Inlet of Pump)
Table 3 Hoists available for Pump Model 7886-S5
Figure 2 Delivery versus Discharge Pressure and Air Consumption

Medium-PressureStainless Material Pump SER 7886-S5
Alemite Corporation 3 Revision (8-00)
Item
No. Part No. Description Qty Notes Numeric Order
Part # (Item #)
1 323842 Bolt, Eye, 3/8 " NPTF (m) 1 11828 (3)
2 323440-A1 Motor Assembly, Air 1 See SER 323440-4 77807 (5)
3 Screw, 1/2 " -20 x 2 " 4
Included with Item 2
172207-4 (4)
4 172207-4 Lockwasher, 1/2 " 4 323440-A1 (2)
5Nut, 1/2 " -20 4 323842 (1)
6 328037 Connector, 3/4 " NPTF (m) 1 327675-5 (8)
7 328031 Coupler, Air, 1/2 " NPTF (f) 1 328031 (7)
8 Tube Assembly, Pump 1 See Figure 3-B 328037 (6)
Legend:
Part numbers left blank (or in italics) are not available separately
Figure 3-A Medium-Pressure Stainless Material Pump Model 7886-S5 - Exploded View

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 4 Alemite Corporation
Figure 3-B Medium-Pressure Stainless Material Pump Model 7886-S5 - Exploded View

Medium-Pressure Stainless Material Pump SER 7886-S5
Alemite Corporation 5 Revision (8-00)
Repair Kits
Part No. Kit Symbol Description
393006 Kit, Major Repair
393007 Kit, Minor, Upper Packing
393008 Kit, Minor, Lower Packing
Item
No. Part No. Description Qty Notes Numeric Order Part # (Item #)
9 323439 Coupling 1 171256 (14)
10 326909 Clip, Spring (Stainless Steel) 6 171258 (13)
11 326907 Piston (Stainless Steel) 1 171701-80 (39)
12 335943 Screw, Packing 1 317419 (38)
13 Screw, 1/2 " -20 x 1-1/4 " 4 317425 (31)
14 Washer, Lock, 1/2 " 4 318855 (40)
15 330481-2 Mounting, Upper 1 323126 (32)
16 327278 Screw, Gland (Stainless Steel) 1 323439 (9)
17 334775 Washer, 1.31 " ID (Stainless Steel) 1 326069-24 (19)
18 334776 Ring, Female Support (Glass-Filled Teflon) 1 326750-A1 (25)
19 326069-24 V-Packing (Teflon) 5 326906 (23)
20 334712 Ring, Male Support (Glass-Filled Teflon) 1 326907 (11)
21 327279 Washer, 1.28 " ID (Stainless Steel) 1 326908-1 (24)
22 330478 Gasket (Stainless Steel) 4 3 in kit
1 in kits 326909 (10)
23 326906 Body (Stainless Steel) 1 326911 (26)
24 326908-1 Cylinder (Stainless Steel) 1 327278 (16)
25 326750-A1 Adapter, Bung, 2 " NPTF (m) 1 327279 (21)
26 326911 Coupling (Stainless Steel) 2 327650 (37)
27 327655 Rod (Stainless Steel) 1 327651 (35)
28 327653 Stem (Stainless Steel) 1 327652 (33)
29 327657 Stop (Stainless Steel) 1 327653 (28)
30 327656 Adapter (Stainless Steel) 1 327655 (27)
31 Washer, 1.19 " ID (Stainless Steel) 1 327656 (30)
32 323126 Packing, Cup (Glass-Filled Teflon) 1 327657 (29)
33 327652 Spacer (Stainless Steel) 1 327664 (36)
34 328719 Packing (Glass-Filled Teflon) 1 328719 (34)
35 327651 Ring, Back-Up (Stainless Steel) 1 330478 (22)
36 327664 Seat, Valve (Stainless Steel) 1 330481-2 (15)
37 327650 Valve (Stainless Steel) 1 334712 (20)
38 317419 Washer, Stop (Stainless Steel) 1 334775 (17)
39 171701-80 Ball, 1-1/4 " Dia. (Stainless Steel) 1 334776 (18)
40 318855 Valve, Foot (Stainless Steel) 1 335943 (12)
Legend:
Part numbers left blank (or in italics) are not available separately
designates a repair kit item

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 6 Alemite Corporation

Medium-PressureStainless Material Pump SER 7886-S5
Alemite Corporation 7 Revision (8-00)
Access to Body Packing
8. Remove lower Spring Clip (10) that secures Rod (11)
to the Coupling.
• Remove the Coupling from the Rod.
9. Remove Packing Screw (12) from Gland Screw (16).
10. Clamp the pump assembly horizontally in a vise at
Body (23).
11. Unscrew and remove Cylinder (24) [with attached
components] from the Body.
• Use a wrench on the Bung Adapter.
Body Packing
12. Remove Gasket (22) from the bottom of the Body.
13. Remove Screws (13) and Lock Washers (14) that
secure Upper Mounting (15) to the Body.
• Remove the Upper Mounting.
14. Remove Gland Screw (16) [with attached
components] from the Body.
15. Remove Washer (21) and Gasket (22) from the top of
the Body.
16. From the bottom of the Gland Screw remove:
• Male Support Ring (20)...................................Qty 1
• V-Packings (19) ...............................................Qty 5
• Female Support Ring (18)................................Qty 1
•Washer(17)......................................................Qty 1
Overhaul
NOTE: Refer to Figure 3-A and 3-B for
component identification on all overhaul
procedures.
Prior to performing any maintenance procedure, the
following safety precautions must be observed. Personal
injury may occur.
WARNING
Release all pressure within the system
prior to performing any overhaul procedure.
• Disconnect the air supply line from the pump
motor.
• Into an appropriate container, operate the
control valve to discharge remaining pressure
within the system.
Never point a control valve at any portion of your
body or another person. Lubricant discharged at
high velocity can penetrate the skin and cause
severe injury. Should any fluid appear to puncture
the skin, get medical care immediately.
Read each step of the instructions carefully. Make
sure a proper understanding is achieved before
proceeding.
Disassembly
Separate Air Motor from Pump Tube
1. Clamp the pump assembly vertically in a vise at Bung
Adapter (25).
2. Remove Screws (3), Lock Washers (4), and Nuts (5)
that secure the Air Motor Assembly to the Pump Tube
Assembly.
3. Lift the motor upward to expose upper Coupling (9)
and at the same time place a wood block (2" x 4") onto
the surface of Upper Mounting (15). See Figure 4.
4. Lower the Air Motor onto the wood block.
5. Remove upper Spring Clip (10) that secures the air
motor piston to the Coupling.
6. Rotate the Coupling until the air motor piston is free.
7. Remove the Air Motor Assembly. Figure 4 Separation of Air Motor from Pump Tube with
use of Wooden Block

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 8 Alemite Corporation
Pump Tube
17. Clamp the Cylinder assembly horizontally in a vise at
the Bung Adapter.
18. Unscrew Foot Valve (40) from Cylinder (24).
• Place a large wrench in the slot of the Foot Valve.
19. Remove Gasket (22), Stop Washer (38), additional
Gasket (22), and Ball (39) from the Foot Valve.
20. Remove the Rod assembly from the bottom of the
Cylinder.
21. Remove upper and lower Spring Clips (10) that secure
Rod (27) and Stem (28) to lower Coupling (26).
22. Unscrew the Rod assembly and the Stem assembly
from the Coupling.
23. Clamp the flats of the Stem assembly in a vise.
24. Unscrew Valve (37) from the Stem.
25. Remove the Valve Seat and Packing assembly from the
Stem.
26. Remove Stop (29) from the Stem.
27. Unscrew Valve Seat (36) from Adapter (30).
28. Remove Packing (34) and Back-Up Ring (35) from the
Valve Seat.
29. Remove Spacer (33), Cup Packing (32), and
Washer (31) from the Adapter.
Optional Procedures
30. Remove upper and lower Spring Clips (10) that secure
Piston (11) and Rod (27) to upper Coupling (26).
31. Unscrew the Piston and the Rod from the Coupling.
Clean and Inspect
NOTE: Use the appropriate repair kit for
replacement parts. Make sure all the compo-
nents are included in the kit before discard-
ing used parts.
1. Clean all metal parts in a solvent compatible with the
product dispensed. The solvent should be
environmentally safe.
2. Make sure to remove the thread sealant from both male
and female threaded connections.
3. Inspect all parts for wear and/or damage.
• Replace as necessary.
4. Inspect Piston (11) and Cylinder (24) closely. Use a
magnifying glass to detect any score marks.
• Replace as necessary.
5. Closely inspect the mating surfaces of all check valve
components for any imperfections. Ensure a smooth
and clean contact is obtained when assembled.
EXAMPLE: Place Ball (39) into Foot Valve
(40). Fill the Foot Valve with solvent. Make
sure no leakage occurs.
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication in clean mineral
oil. Refer to Table 4 for details.
Body Packing
NOTE: Refer to Figure 5 for a section view
of the Pump Tube Assembly.
1. Position Gland Screw (16) threads upward.
2. Install and seat the following components in order:
•Washer(17)......................................................Qty 1
• Female Ring (18) [concave surface upward]....Qty 1
• V-Packings (19) [concave surface upward] ..... Qty 5
• Male Ring (20) [flat surface upward]...............Qty 1
3. Clamp Body (23) small diameter upward.
4. Install and seat Gasket (22) and Washer (21) into the
Body.
5. Screw the Gland Screw assembly into the Body.
• Tighten securely to properly crush the Gasket.
6. Install and align Upper Mounting (15) onto the Body.
7. Install Lock Washers (14) and Screws (13) that secure
the Upper Mounting to the Body.
• Tighten the Screws securely in a crisscross pattern.
Item No. Description
11 Piston
24 bore of Cylinder
Table 4 Components Lubricated in Clean Mineral Oil

Medium-PressureStainless Material Pump SER 7886-S5
Alemite Corporation 9 Revision (8-00)
Figure 5 Pump Tube Assembly 327675-5 - Section View
Refer to Figure 3-B
Parts List for Parts Identification

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 10 Alemite Corporation
Pump Tube
CAUTION
Use care installing Piston (11) into the Body
assembly. Damage to the V-Packings can occur.
8. Install Piston (11) into the top of the Body assembly.
Valve and Packing Assembly
9. Position Adapter (30) threaded end upward.
10. Install Washer (31) [lip upward], Cup Packing (32)
[flat side upward], and Spacer (33) [grooved end first]
onto the Adapter.
11. Install Back-Up Ring (35) [concave end first] and
Packing (34) onto Valve Seat (36).
12. Screw the Valve Seat assembly onto the Adapter
assembly.
• Tighten the Valve Seat after it bottoms.
13. Install Stop (29) onto Stem (28).
14. Install the Valve Seat and Packing assembly [Adapter
end first] onto the Stem assembly.
15. Clamp the flats of Valve (37) horizontally into a soft-
jaw vise.
16. Screw the Stem assembly [with Loctite 222] into the
Valve.
• Tighten the Stem assembly securely.
17. Measure the distance from the bottom of the Stem to
the bottom of the Valve.
• The distance must not be greater than 0.15 "
(3.8 mm). See Figure 5.
NOTE: This setting ensures the components
remain engaged.
18. Screw lower Coupling (26) onto the Stem until the
Spring Clip holes align.
19. Measure the distance from the bottom of the Coupling
to the top of the Stop.
• The distance must not be less than 0.23 " (5.8 mm)
and no greater than 0.26 " (6.6 mm). See Figure 5.
NOTE: This setting effects the efficiency of
the pump.
20. Install Spring Clip (10).
Rod and Cylinder
21. Install the Valve Seat and Packing assembly onto Rod
(27) until the Spring Clip holes align.
22. Install Spring Clip (10).
23. Screw upper Coupling (26) onto the Rod until the
Spring Clip holes align.
24. Install Spring Clip (10).
CAUTION
Use care installing Cylinder (24) onto the Rod
assembly. Damage to the Cup Packing can occur.
25. Install Cylinder (24) [large bore first] onto the top of
the Rod assembly.
• Make sure the Coupling on the Rod assembly is
exposed from the top of the Cylinder.
26. Install Gasket (22) [seam first] into the bottom of the
Body.
27. Screw the Rod assembly onto the Piston until the
Spring Clip holes align.
28. Install Spring Clip (10).
29. Screw the Cylinder into the Body assembly.
• Do not tighten at this time.
30. Install Bung Adapter (25) onto the Cylinder.
Foot Valve
31. Install Ball (39) into the top of Foot Valve (40).
32. Install and seat Gasket (22) [seam upward], Stop
Washer (38) [convex upward], and additional Gasket
(22) [seam first] into the Foot Valve.
33. Screw the Foot Valve assembly onto the Cylinder.
• Make sure the Ball moves freely.
34. Clamp the pump assembly at the Body.
35. Place a large wrench or other suitable tool into the slot
of the Foot Valve.
• Tighten all the components of the assembly securely.
• Make sure to properly crush all Gaskets.

Medium-PressureStainless Material Pump SER 7886-S5
Alemite Corporation 11 Revision (8-00)
Attach Air Motor to Pump Tube
CAUTION
Do not extend the Piston too far from the Body.
The Coupling and Spring Clip assembly will
contact the V-Packing group.
36. Extend Piston (11) from the top of the Body assembly
enough to allow access to its Spring Clip hole.
IMPORTANT: Do not overtighten Packing
Screw (12). The pump must cycle with an ini-
tial air pressure setting of 15 psi (1 Bar).
37. Install and tighten Packing Screw (12) into Gland
Screw (16) until it contacts the V-Packing group.
• Use the torque bar to snug the installation.
38. Screw upper Coupling (9) onto the Rod until the
Spring Clip holes align.
39. Install Spring Clip (10).
40. Position the pump assembly vertically in a soft-jaw
vise.
41. Fill the cavity of the Packing Screw with a solution
that prevents product from drying on the Piston.
This step is important for visual feedback due to
possible leakage during the initial start up procedures.
42. Place a wood block (2" x 4") onto the surface of the
Upper Mounting as illustrated in Figure 4.
43. Position Air Motor Assembly (2) onto the Pump Tube
Assembly.
• Make sure to orient the Air Motor Assembly
properly.
44. Screw the air motor piston rod onto the Coupling until
the Spring Clip holes align.
45. Install the Spring Clip.
46. Remove the block and position the Air Motor
Assembly onto the Pump Tube Assembly.
47. Install Screws (3), Lock Washers (4), and Nuts (5) that
secure the Air Motor Assembly to the Pump Tube
Assembly.
• Tighten the Screws securely in a crisscross pattern.
Bench Test and Operation
WARNING
Do not exceed the lowest pressure rating
of any component in the system.
Never point a control valve at any portion of your
body or another person. Product discharged at
high velocity can penetrate the skin and cause
severe injury. Should any material appear to punc-
ture the skin, get medical care immediately.
Ensure all components are in operable condition.
Replace any suspect parts prior to operation.
Should leakage occur anywhere within the system,
disconnect air to the motor. Personal injury can
occur
Initial Start Up
1. Make sure air pressure at the regulator reads zero.
2. Install air Connector (6) to the inlet of the air motor.
3. Connect Air Coupler (7) to the Connector.
IMPORTANT: The pump must begin to cycle
once the air pressure reaches 15 psi (1 Bar).
4. Slowly supply air pressure [not to exceed 15 psi
(1 Bar)] to the pump’s motor.
• The pump assembly should begin to cycle.
If the pump assembly does not cycle, loosen the
Packing Screw.
NOTE: The pump may not cycle for addi-
tional reasons. Refer to the Troubleshooting
Chart for details.
Should the pump cycle before 15 psi (1 Bar) is reached,
tighten the Packing Screw.
CAUTION
Do not operate the pump longer than 2 minutes
during the adjustment procedure. Excessive heat
due to friction can change the setting.
5. Continue to adjust the Packing Screw until the pump
begins to cycle at 15 psi (1 Bar).

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 12 Alemite Corporation
With air pressure at zero:
6. Connect a product hose to the pump’s material
outlet.
• Direct the hose into a collection container.
7. Place the pump in the product to be dispensed.
8. Slowly supply air pressure to the pump’s motor
once again.
9. Allow the pump to cycle slowly until the product
is free of air.
If the pump assembly does not prime, refer to the
Troubleshooting Chart for details.
10. Inspect Packing Screw (12) for leakage.
Should the solution overflow the torque hole in the
Packing Screw, tighten the Packing Screw clockwise
1/8 turn.
With air pressure at zero:
11. Attach a control valve to the outlet hose of the
pump.
• Make sure the nozzle on the control valve is
open and pointed into an appropriate collection
container.
12. Slowly supply air pressure to the pump’s motor.
13. Allow the pump to cycle slowly until the product
is once again free of air.
14. Set the air pressure to 100 psi (6.9 Bar).
15. Operate the control valve into the container
momentarily.
16. Shut off the control valve.
• Visually inspect the pump for external leaks.
• The pump should not cycle more than once or
twice in one hour.
If the pump does not stall, refer to the Troubleshooting
Chart for details.
17. Check the motor for air leakage.
If the motor leaks, refer to the Air Motor Service Guide
for details.
18. Open the control valve and allow the pump to operate for 5
minutes.
19. Inspect Packing Screw (12) for leakage.
Should the solution overflow the torque hole in the Packing
Screw, tighten the Packing Screw clockwise an additional 1/8
turn.
IMPORTANT: After 8-10 hours of operation,
inspect the Packing Screw for leakage once
again. Tighten an additional 1/8 turn as
required.
Installation
Additional items that should be incorporated into the air
piping systems are listed in Table 5.
* Although the air motor is lubricated at the factory, the life
of the motor can be extended with the use of a lubricator.
Part Number Description
338862 Moisture Separator/Regulator & Gauge Combination
5608-2 Moisture Separator
7608-B Regulator and Gauge
5908-2 Lubricator *
Table 5 Air Line Components

Medium-Pressure Stainless Material Pump SER 7886-S5
Alemite Corporation 13 Revision (8-00)
Troubleshooting Chart
Pump Indications Possible Problems Solution
Pump does not cycle 1. Packing Screw (12) too tight
2. Air motor not operating properly
3. Pump tube jammed and/or contains
loose components
4. Insufficient air pressure
1. Loosen Packing Screw (12)
2. Inspect air motor and rebuild or
replace as necessary
3. Rebuild pump tube
4. Increase air pressure
Pump will not prime 1. Excessive cycling speed
2. Pump leaking internally 1. Reduce air pressure 2. See Internal Leaks
Pump cycles rapidly Product source empty Replenish product
Pump cycles continuously, or
slowly (once or twice/hour) 1. Pump leaking internally 2. Pump leaking externally
3. Distribution system leaking
1. See Internal Leaks
2. See External Leaks
3. Correct leak
External Leaks
Product leakage visible at torque
hole or bottom of Packing Screw
(12)
1. Packing Screw (12) not sufficiently tight
2. Worn or damaged V-Packings (19)
3. Damaged Piston (11)
1. Tighten Packing Screw (12) with
use of torque bar
2. Replace V-Packings (19)
3. Inspect Piston (11) and replace as
necessary
Product leakage visible at top of
Body (23)1. Gland Screw (16) not sufficiently tight 2. Damaged Gasket (22)1. Tighten Gland Screw (16)
2. Replace Gasket (22)
Product leakage visible at bottom
of Body (23)1. Pump tube not sufficiently tight
2. Damaged Gasket (22)1. Tighten pump tube assembly 2. Replace Gasket (22)
Product leakage visible at top of
Foot Valve (40)1. Foot Valve (40) not sufficiently tight
2. Damaged Gasket(s) (22)
1. Tighten Foot Valve (40) into
Cylinder (24)
2. Replace Gasket(s) (22)
Internal Leaks
Pump does not prime or cycles
continuously, or slowly
(once or twice/hour)
1. Foreign material between Ball (39) and
Foot Valve (40)
2. Foreign material between Valve (37)
and Valve Seat (36)
3. Worn or damaged Ball (39)
4. Worn or damaged Foot Valve (40)
5. Worn or damaged Valve (37)
6. Worn or damaged Valve Seat (36)
7. Worn or damaged Cup Packing (32)
8. Worn or damaged Packing (34)
9. Worn or damaged Cylinder (24)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect
and replace worn or damaged
components.
Changes Since Last Printing
Changed Cylinder 326908-1

SER 7886-S5 Medium-Pressure Stainless Material Pump
Revision (8-00) 14 Alemite Corporation
Every effort has been made to ensure that the information within this publication is accurate.
Please send any comments or inquiries to chris.schrad[email protected]