Maintenance; Lubrication; Washing And Storing; Regular Check Of Sealing And Tightness - WAGNER Unica 4-270 Translation Of The Original Operating Manual

Medium pressure double diaphragm pump

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EDITION 09 /2015

OPERATING MANUAL

6.2

MAINTENANCE

6.2.1

No lubrication is required for the pneumatic motor. An excessive lubrication may cause

system failure.

Regularly check the condition of compressed air fi lters mounted on the pneumatic motor

piloting system (parts nr. 25 in the diagram in Paragraph 8.3). Replace them if necessary.

6.2.2

Before stopping the pump for a period of time in which the fl uid may harden inside the

curcuit and damage the system, carry out a washing with suitable solvent. Please see Para-

graph 5.3 "Disconnection and cleaning" for the relevant procedure.

6.2.3

Before each use of the

pump:

1. Make sure that all fl uid conveying pipes have no wear signs or damages. Replace them

if necessary.

2. Check the sealing and tightness of all threaded fi ttings. Make sure there are no leaks.

Check screws tightness at least once every two months. Please see this manual for

information about the correct tightening torques.

6.2.4

Work out a plan of preventive maintenance including the above checks, basing on the

usage history of the pump. The wear of components depends on the using conditions. It

is important to replace the parts subject to wear (e.g. valve seats or membranes) in due

time, in order not to have the system damaged, which can be avoided by means of a plan

of preventive maintenance.

PART NO. ZZB028ENG

Unica 4-270 N

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