Alemite 7216-S User manual

Service Guide 7216-S
7216-S3
SER 7216-S3
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
www.alemite.com
Copyright © 2002 by Alemite Corporation
This document contains confidential information that is the property of Alemite Corporation
670547 and is not to be copied, used, or disclosed to others without express written permission. Revision (10-02)
Figure 1 Stainless Transfer Pump Model 7216-S3
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 7216-S3 consist of a
reciprocating differential air motor and a double-acting pump tube.
This low-pressure (1:1 ratio) pump is equipped with a
2 " PT (m) bung adapter and a stainless extension that allows
operation directly from original 55-gallon (200/205 l) drums.
Models 7216-S and 7216-S3
Model 7216-S is obsolete. Repair parts are still available.
Specifications
Differential Air Motor
Pump Tube
Piston
Diameter x Stroke
Effective
Piston Area * Air Inlet
Maximum Air
Pressure
In Cm In2Cm2psi Bars
2-1/16 x 4 5.2 x 10.2 1.67 10.8 1/4 " NPTF (f) 200 13.8
For details on the air motor, refer to Service Guide SER 318450-4.
See Figure 3 for performance curves.
* The effective piston area of a differential air motor is equal to one-half the
actual area of the piston.
Fluid
Outlet
Max. Fluid
Pressure
Max. Free-Flow
Delivery/Minute *
Displacement
per Cycle
psi Bars Gallons Liters In 3Cm 3
1 " NPTF (f) 200 13.8 14 53 10.5 172
See Figure 3 for performance curves.
* SAE 10 oil at 75 ° F (24 ° C) and 100 psi [6.9 Bars] air pressure.
Table 1 Transfer Pump Model 7216-S3 Specifications
Stainless Transfer Pump

SER 7216-S3 Stainless Transfer Pump
Revision (10-02) 2 Alemite Corporation
Figure 2 Transfer Pump Model 7216-S3 - Exploded View

Stainless Transfer Pump SER 7216-S3
Alemite Corporation 3 Revision (10-02)
Item
No. Part No. Description Qty Notes Numeric Order Part # (Item #)
1 Motor Assembly, Air 1 See SER 318450-4 (1)
2 53176 Adapter, 1/4 '' NPTF (m) x 1/4 '' NPTF (f) 1 53176 (2)
3 319391 Valve, 1/4 '' PT (m) 1 171701-80 (24)
4 B330605 Adapter, 1/4 '' NPTF (f) 1 171724 (22)
5 328030 Coupler, Air, 1/4 " NPTF (f) 1 317419 (23)
6 318859 Pin, Cotter, 1/8 '' Dia. x 1.25 '' Long (SS) 1 318859 (6)
7 Rod and Stop Assy, 9-1/2 '' Long (SS) 1 319391 (3)
8 332272 Nut, 2-1/4 '' -16 1 320033-82 (12)
9 332262 Screw Assy, Packing (w/ nylon insert) (SS) 1 320472 (20)
10 332268 Washer (Stainless Steel) 2 326750-A1 (18)
11 332270 Ring, Female Adapter (Virgin Teflon) 1 328030 (5)
12 Packing, 1-3/8 '' ID x 1-7/8 '' OD (Teflon) 2 B330605 (4)
13 Ring, Male Adapter (Virgin Teflon) 1 332258 (26)
14 332269 Spring (Stainless Steel) 1 332262 (9)
15 332265 Body Assembly (Stainless Steel) 1 332265 (15)
16 333388 Gasket (Stainless Steel) 3 332268 (10)
17 332273 Cylinder (Stainless Steel) 1 332269 (14)
18 326750-A1 Adapter, Bung, 2 " NPTF (m) (SS) 1 332270 (11)
19 332274 Valve (Stainless Steel) 1 332271 (13)
20 320472 Ring, Packing (Teflon) 2 332272 (8)
21 338598 Plunger (Stainless Steel) 1 332273 (17)
22 171724 Nut, Elastic Stop, 3/8 '' -24 (Stainless Steel) 1 332274 (19)
23 317419 Washer, Stop (Stainless Steel) 1 333388 (16)
24 171701-80 Ball, 1-14 '' Dia. Stainless Steel) 1 333689 (25)
25 333689 Body, Valve (Stainless Steel) 1 337824 (7)
26 332258 Extension (Stainless Steel) 1 338598 (21)
Legend:
Part numbers left blank (or in italics) are not available separately
designates a repair kit item SS = Stainless Steel
Repair Kit
Part No. Kit Symbol Description
393309-2 Kit, Major Repair

SER 7216-S3 Stainless Transfer Pump
Revision (10-02) 4 Alemite Corporation
Figure 3 Delivery versus Discharge Pressure and Air Consumption
Performance Curves
A pump’s ability to deliver fluid is based on the pressure (psi/Bars) and quantity
(cfm/lpm) of air supplied to the motor and the amount of fluid 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 fluid discharge pressure in psi/Bars (left Y axis).

Stainless Transfer Pump SER 7216-S3
Alemite Corporation 5 Revision (10-02)
Overhaul
NOTE: Refer to Figure 2 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. Product 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 Pump Tube from Air Motor
1. Clamp Body Assembly (15) horizontally in a soft-jaw
vise.
CAUTION
Support the pump tube assembly during removal.
Damage to components can occur.
2. Unscrew Cylinder (17) from the Body Assembly.
• Remove the Cylinder [with attached components].
3. Pull on Rod and Stop Assembly (7) to expose the end
of the Air Motor’s piston rod as required.
4. Remove Cotter Pin (6) that secures the Air Motor’s
piston rod to the Rod and Stop Assembly.
5. Unscrew the Rod and Stop Assembly from the Air
Motor’s piston rod.
6. Loosen Jam Nut (8) that secures Air Motor Assembly
(1) to the Body Assembly.
7. Unscrew and remove the Air Motor Assembly from the
Body Assembly.
8. Remove the Jam Nut from the Air Motor Assembly as
required.
Pump Tube Assembly
Body Assembly
9. Remove Gasket (16) from the bottom of the Body
Assembly.
10. Remove Packing Screw Assembly (9) from the Body
Assembly.
11. From the top of the Body Assembly remove:
•Washer(10) ..................................................... Qty 1
• Female Adapter Ring (11) ............................... Qty 1
• Packings (12)................................................... Qty 2
• Male Adapter Ring (13)................................... Qty 1
• additional Washer (10)..................................... Qty 1
• Spring (14) ...................................................... Qty 1
Cylinder Assembly
12. Unscrew Nut (22) that secures Plunger (21) to the Rod
and Stop Assembly.
• Remove the Plunger and Valve (19) from the Rod and
Stop Assembly.
13. Remove both Packing Rings (20) from the Plunger.
14. Remove Bung Adapter (18) from the Cylinder as
required.
Vale Body Assembly
15. Unscrew Valve Body (25) from the Cylinder.
16. Remove Gasket (16), Stop Washer (23), additional
Gasket (16), and Ball (24) from the Valve Body.
17. Remove Extension (26) from the Valve Body as
required.

SER 7216-S3 Stainless Transfer Pump
Revision (10-02) 6 Alemite Corporation
3. Screw Packing Screw Assembly (9) into the Body
Assembly loosely.
IMPORTANT: The Packing Screw Assembly
will require adjustment. Refer to the section
entitled Bench Test and Operation for
details.
4. Screw Jam Nut (8) onto Air Motor Assembly (1).
5. Screw the Air Motor Assembly into the Body
Assembly.
• Tighten the Air Motor Assembly securely.
6. Tighten the Jam Nut that secures the Air Motor
Assembly to the Body Assembly.
7. Install Gasket (16) into the Body Assembly.
Rod and Stop Assembly
8. Install Packing Rings (20) onto Plunger (21).
9. Install Valve (19) and Plunger assembly [flat surface
first] onto the bottom of Rod and Stop Assembly (7).
10. Install Nut (22) onto the Rod and Stop Assembly.
• Tighten the Nut securely.
11. Screw the Rod and Stop Assembly into the piston of
the Air Motor Assembly.
• Make sure the cotter pin holes align.
12. Install Cotter Pin (6) that secures the Piston Assembly
to the Rod and Stop Assembly.
Valve Body and Cylinder Assembly
13. Install Ball (24), Gasket (16), Stop Washer (23) [flat
side first], additional Gasket (16), into Valve Body
(25).
14. Screw Cylinder (17) [with Loctite 222] into the Valve
Body.
• Do not tighten at this time.
15. Install Bung Adapter (18) onto the Cylinder.
16. Install the Cylinder (with Loctite 222) [with attached
components] onto the Plunger.
• Use care not to damage the Packing Rings.
Clean and Inspect
IMPORTANT: Replace a worn old style
nylon 11 Plunger with the current Plunger
and Ring assembly (See Figure 4).If the old
style Plunger is desired, order part 337693.
1. Clean all metal parts in cleaning solvent. The solvent
should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Inspect Rings (20) for wear.
• Replace as necessary.
4. Inspect the bore of Cylinder (17) for 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 (24) into Valve
Body (25). Fill the Valve Body with solvent.
Make sure no leakage occurs.
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication in clean mineral
oil. Refer to Table 3 for details.
Pump Tube Assembly
Body Assembly
1. Clamp Body Assembly (15) [exhaust port upward] in a
soft-jaw vise.
2. Install and seat the following components in order:
• Spring (14).......................................................Qty 1
•Washer(10) .....................................................Qty 1
• Male Adapter Ring (13) [ridge upward] ..........Qty 1
•Packings(12) [ridge upward] ..........................Qty 2
• Female Adapter Ring (11) [flat side upward] ..Qty 1
• additional Washer (10).....................................Qty 1
Item No. Description
1 Air Motor piston rod
17 bore of Cylinder
Table 3 Components Lubricated in Clean Mineral Oil

Stainless Transfer Pump SER 7216-S3
Alemite Corporation 7 Revision (10-02)
Figure 4 Pump Tube Assembly - Section View
Refer to Figure 2 Parts List
for Parts Identification

SER 7216-S3 Stainless Transfer Pump
Revision (10-02) 8 Alemite Corporation
Connect Pump Tube to Air Motor
17. Screw the Cylinder into the Body Assembly.
• Make sure the Gasket has not moved.
18. Tighten the Valve Body into the Cylinder and at the
same time the Cylinder into the Body Assembly.
• Make sure to properly crush the Gaskets.
19. Screw Extension(26) [with Loctite 222] into the Valve
Body.
• Tighten the Extension securely.
Bench Test and Operation
WARNING
Do not exceed the lowest pressure rating
of any component in the system.
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 Prime
1. Place the pump in the fluid to be dispensed.
2. Connect a product hose to the pump’s fluid outlet.
• Direct the hose into an appropriate collection
container.
3. Screw Adapter (2) [with thread sealant] into the inlet
of the Air Motor Assembly.
4. Screw Valve (3) [with thread sealant] into the Adapter.
5. Screw Adapter (4) into the Valve [with thread sealant].
• Tighten the Adapter securely.
6. Install Air Coupler (5) onto the air supply line.
7. Make sure air pressure at the regulator reads zero.
8. Connect the Air Coupler to the Adapter.
9. Slowly supply air pressure to the pump’s motor.
10. Allow the pump to cycle slowly until the fluid is free
of air.
If the pump assembly does not prime, refer to the
Troubleshooting Chart for details.
Starting Pressure
11. Set the air pressure to 30 psi (2.1 Bars).
12. Insert the Adjustment Rod into one of the holes in the
Packing Screw Assembly.
13. Adjust the Packing Screw Assembly until the pump
assembly stops.
14. Loosen the Packing Screw Assembly until the pump
assembly begins to cycle.
Leakage and Stall
WARNING
Should leakage occur anywhere within the
system, disconnect air to the motor. Personal
injury can occur.
With air pressure at zero:
15. Attach a control valve to the outlet hose of the pump.
• Make sure the nozzle on the control valve is open.
16. Slowly supply air pressure to the pump’s motor.
17. Allow the pump to cycle slowly until the fluid is once
again free of air.
18. Set the air pressure to the normal operating pressure.
19. Operate the control valve into a container.
20. 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 leaks or does not stall, refer to the
Troubleshooting Chart for details.
21. Check the motor for air leakage.
If the motor leaks, refer to the Air Motor Service
Guide for details.

Stainless Transfer Pump SER 7216-S3
Alemite Corporation 9 Revision (10-02)
Installation
Additional items that should be incorporated into the
air piping systems are listed in Table 4.
Part Number Description
5604-2 Moisture Separator
7604-B Regulator and Gauge
Table 4 Air Line Components
Packing Adjustment
IMPORTANT: Break-in and wear of upper
packings require the user to readjust the
Packing Screw Assembly:
• after approximately 6 hours of initial operation *
• anytime the upper packings leak
1. Make sure the air pressure is zero.
2. Operate the control valve into a container.
• This releases any pressure within the system.
3. Insert the Adjustment Rod into one of the holes in the
Packing Screw Assembly.
4. Tighten Packing Screw Assembly (9) clockwise 1/4-
turn.
5. Set the air pressure to 30 psi (2.1 Bars).
6. Hold the control valve open while aiming into a
suitable collection container.
7. Loosen the Packing Screw Assembly until the pump
assembly begins to cycle.
* Applies to new and overhauled pumps.

SER 7216-S3 Stainless Transfer Pump
Revision (10-02) 10 Alemite Corporation
Troubleshooting Chart
Pump Indications Possible Problems Solution
Pump does not cycle 1. Packings (12) too tight
2. Air motor not operating properly
3. Pump tube jammed and/or contains
loose components
4. Insufficient air pressure
1. Adjust Packing Screw Assembly (9)
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 will not stall (cycles more
than once or twice/hour)
1. Pump requires break-in period
2. Pump leaking internally
3. Pump leaking externally
4. Distribution system leaking
1. Operate the pump against moderate
fluid pressure for up to one hour
2. See Internal Leaks
3. See External Leaks
4. Correct leak
External Leaks
Product leakage visible at bottom
of Body Assembly (15)
1. Damaged Gasket (16)
2. Cylinder (17) not sufficiently tight
1. Replace Gasket (16)
2. Tighten Cylinder (17) into Body
Assembly (15)
Product leakage at exhaust port in
Body Assembly (15)
1. Packings (12) too loose
2. Worn or damaged Packing(s) (12)
3. Worn or damaged air motor piston rod
1. Adjust Packing Screw Assembly (9)
2. Use Kit 393309-2
3. Replace air motor piston rod
Product leakage between Cylinder
(17) and Valve Body (25)
1. Worn or damaged Gaskets (16)
2. Valve Body (25) not sufficiently tight
1. Replace Gaskets (16)
2. Tighten Valve Body (25) into
Cylinder (17)
Product leakage between Valve
Body (25) and Extension (26)
Extension (26) not sufficiently tight Tighten Extension (26) into Valve
Body (25)
Internal Leaks
Pump does not prime or cycles
continuously, or
slowly (once or twice/hour)
1. Foreign material between Ball (24) and
Va l v e B o d y ( 25)
2. Foreign material between Valve (19)
and Plunger (21)
3. Worn or damaged Ball (24)
4. Worn or damaged Valve Body (25)
5. Worn or damaged Valve (19)
6. Worn or damaged Plunger (21)
Locate and eliminate source of foreign
material
Disassemble pump tube, clean,
inspect, and replace worn or damaged
components
Changes Since Last Printing
Deleted Minor Repair Kit to 393624