Alemite 7730 Service Manual - Page 14

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SER 7730

Pump Indications

Pump does not cycle

Pump will not prime

Product is aerated *

Pump cycles rapidly

Pump will not stall (cycles more than once

or twice/hour)

External Leaks

Product leakage from weep hole in

Body (12)

Visible at air motor base

Product leakage at bottom of Body (12)

Visible on Pump Tube (28)

Air leakage from weep hole in

Body (12)

Felt at air motor base

Product leakage visible at weep hole in

Pump Tube (28) and/or Adapter (44)

Pump will not prime or product is aerated * 1. Damaged O-Ring (24)

Internal Leaks

Pump will not prime or pump will not stall

(cycles more than once or twice/hour)

* Should the pump aerate product, see Section entitled Prove the Pump for details.

Revision (8-01)

Troubleshooting Chart

Possible Problems

1. Insufficient air pressure

2. Air motor not operating properly

3. Pump tube jammed and/or contains loose

components

1. Pump leaking internally

2. Improper seal between Camlock

Adapter (25) and camlock

3. Bulk container connection fittings leaking

4. Pump leaking externally

1. Improper seal between Camlock

Adapter (25) and camlock

2. Bulk container connection fittings leaking

3. Pump leaking externally

Product source empty

1. Pump leaking internally

2. Pump leaking externally

3. Distribution system leaking

1. Damaged Seal (18)

2. Damaged air motor piston rod.

1. Pump tube not sufficiently tight

2. Damaged Gaskets (21)

Damaged Seal (16)

1. Pump tube not sufficiently tight

2. Damaged Gasket(s) (29)

2. Damaged O-Rings (11)

1. Foreign material between Ball (39) and

Adapter and Insert Assembly (41)

2. Foreign material between Valve Body (47) and

Valve Seat (48)

3. Worn or damaged Ball (39)

4. Worn or damaged Adapter and Insert

Assembly (41)

5. Worn or damaged Valve Body (47)

6. Worn or damaged Valve Seat (48)

7. Worn or damaged Seal (32)

8. Worn or damaged Piston (36)

9. Worn or damaged Seal (46)

10. Worn or damaged Primer Rod (43)

Changes Since Last Printing

Changed Configuration of Retainer 319763

High-Pressure Bulk Grease Pump

Solution

1. Increase air pressure

2. Inspect air motor and rebuild or replace as

necessary

3. Rebuild pump tube

1. See Internal Leaks

2. Replace seal in camlock

3. Seal fittings and tighten securely

4. See External Leaks

1. Replace seal in camlock

2. Seal fittings and tighten securely

3. See External Leaks

Replenish product

1. See Internal Leaks

2. See External Leaks

3. Correct leak

1. Separate pump tube from air motor and replace

Seal (18)

2. Inspect piston rod and replace as necessary

1. Tighten pump tube assembly

2. Separate pump tube from air motor and replace

Gaskets (21)

Separate pump tube from air motor and replace

Seal (16)

1. Tighten pump tube assembly

2. Disassemble pump tube and replace Gaskets (29)

1. Remove Camlock Adapter (25) and replace

O-Ring (24)

2. Replace O-Rings (11)

Locate and eliminate source of foreign material.

Disassemble pump tube, clean, inspect and replace

worn or damaged components.

Alemite Corporation