IMOVILLI M35 - User Manual

Imovilli Pompe S.r.l.
Reggio Emilia – Italy
www.imovillipompe.it
Manuale d’officina – Pompe a membrana 1/11
WORKSHOP MANUAL
DIAPHRAGM PUMPS
1.0 A-M VALVE ZONE CONTROL on pumps with internal manifolds
(M25 – M29 – M30 – M35 – M 50 – M60 – M73 – M104S – M135S)
1.1 Remove the valve covers and remove the A-M valves
from the cylinder head
NOTE: The suffix A-M means "Suction / Delivery"; in
fact, the pump valves can be used indifferently in
suction and delivery
1.2 Break down the valves into the individual elements and
proceed with their inspection; if a component is
particularly worn or damaged they will need to be
replaced.
1.3 Check the inside of the valve covers: if they show signs
of wear in the contact areas with the valve caps or
damage in the plasticization, they must be replaced.

Summary

A-M VALVE ZONE CONTROL on pumps with internal manifolds

Remove Valve Covers and A-M Valves

Inspect and Replace Valve Components

Check Valve Covers for Wear

Tested control in the A-M valve zone

Replace Head or Covers

Reassembly

Reposition A-M Valves Correctly

Reposition A-M valves correctly in the head, following model-specific guidance.

Reposition A-M Valves (External)

Reposition A-M valves in heads per original scheme and model-specific fittings.

Diaphragm control and replacement

Diaphragm Replacement Procedure

Steps for diaphragm replacement: positioning, unscrewing pin, removing diaphragms, and cleaning.

Check for Swollen Diaphragms

Diagnose Excessive Depression

Check for cuts near intake valves, indicating potential excessive depression issues.

Diagnose Piston Contact

Inspect oil-contact side for cuts near piston, indicating piston contact or operational issues.

Disassemble for Broken Diaphragms

If any membrane breaks, fully disassemble the crank mechanism for component inspection.

Cylinder control

Inspect Cylinders for Scratches

Disassembly and control of shaft and bearings

Keyway Position for Shaft Extraction

Special attention for M25-M50 pumps: position keyway vertically for shaft extraction to avoid damage.

Pump shaft control

Shaft and Bearing Component Checks

Replace Worn Shaft Components

Inspect Shaft for Grooves

Check shaft surface for grooves where connecting rods and oil seals operate.

Reassembly and Air Bleeding

Air Bleeding Procedure

Tilt pump and rotate shaft to expel air bubbles until oil level stabilizes.

CHECKING AND REPLACING THE OIL

Initial Pump Start-up After Intervention

Follow specific steps for initial start-up to purge air and ensure efficiency.

Pump Operation and Air Purging

Initial Start-up with Canceled Pressure

Cycling Pump for Air Removal

Cycle pump operation at intervals to expel air and lower oil level.

Increase Speed and Pressure

Final Regularization of Pumping

IMOVILLI M35 Specifications

General

Brand	IMOVILLI
Model	M35
Category	Water Pump
Language	English