Pressure Release Procedure; Pump Washing - WAGNER Unica 4-270 Translation Of The Original Operating Manual

EDITION 09 /2015
OPERATING MANUAL
Before every start-up, the following points should be observed as laid down in the
operating manual:
- Check the admissible pressures
- Check all connections for leaks
- Check hoses for damage
It should be ensured that the unit is in the following state before carrying out any work on
it:
- Interrupt compressed air supply.
- Depressurise the pump and the product delivery circuit.
Emergency stop
In case of unexpected events, it is necessary to close immediately the compressed air sup-
ply and discharge the pressure from the pump service circuit.
5.2.2

PRESSURE RELEASE PROCEDURE

1. Interrupt the pump compressed air supply.
2. Open the usage and discharge the remaining pressure inside the pump and circuit.
3. To guarantee a complete depressurisation of the pneumatic motor, pull the ring of the
safety valve (see Paragraph 4.4.1).
5.2.3

PUMP WASHING

The Unica 4-270 N pump is tested in the factory with oil.
In case eventual testing fl uid residues may contaminate the working material, carry out a
preliminary washing using a solvent compliant with the product. To perform the washing
see the instructions in the following paragraph, considering the solvent instead of the wor-
king material.
PART NO. ZZB028ENG
Unica 4-270 N
.
27