IMOVILLI M135S - 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: Internal Manifolds

Remove Valve Covers and Valves

Inspect Valve Components

Check Valve Covers for Wear

Tested Control in A-M Valve Zone

Verify Valve Support Surfaces

Inspect O-Ring Diameters for Grooves

A-M Valve Zone Control: External Manifolds

Remove Manifolds and Extract Valves

Diaphragm Control and Replacement

Initial Diaphragm Removal

Positioning pump, unscrewing pin, and removing diaphragms.

Diaphragm Swelling Check

Diaphragm Damage from Suction Issues

Diaphragm Damage from Piston Contact

Cylinder Control

Inspect Cylinders for Scratches

Shaft and Bearing Support Removal

Through Shaft Disassembly

Pump Shaft Control

Inspect Shaft for Rod Wear

Inspecting shaft surface for grooves or incorporated metal from connecting rods.

Inspect Shaft for Oil Seal Grooves

Checking shaft area for grooves caused by oil seal dust.

Reassembly

General Reassembly Steps

Add Lubricating Oil

Air Bleeding

Initial Air Bleeding Steps

Tilting pump and rotating shaft to initiate air bleeding.

First Start-up Procedure

First start-up with pressure canceled and suction line connected.

Repeated Start;Stop for Air Bleeding

Using repeated start/stop cycles to effectively bleed air from the pump.

Speed and Pressure Adjustments for Bleeding

Adjusting speed and pressure during air bleeding for optimal purging.

Pressure Cancellation for Bleeding

Using pressure cancellation and resetting for effective air bleeding.

Final Air Bleeding Cycles

Repeating air bleeding cycles for smoother pump operation.

ANNEX A - Oil Checks and Replacement

Post-Maintenance Oil Purging

Initial steps for purging air after maintenance: tilting and rotating shaft.

IMOVILLI M135S Specifications

General

Category	Water Pump
Inlet/Outlet Size	1 inch
Power Source	Electric
Model	M135S
Frequency	50Hz
Protection	IPX4