Filling With Working Fluid; Pump Stop - WAGNER Unica 4-270 Translation Of The Original Operating Manual

EDITION 09 /2015
OPERATING MANUAL
5.2.4

FILLING WITH WORKING FLUID

This description refers to the exemplifying picture given in Paragraph 5.1.6.
1. Make sure the pump is correctly connected to a grounding terminal. Please see
Pragraph 5.1.7 - "Grounding" for further information.
2. Check the tightness of all fi ttings and make sure they are tight enough.
3. Connect the pump suction duct to the tank with the working fl uid (I). For example, if a
suction hose is used, dip it in the barrel of the product to be pumped.
4. Connect the pump delivery duct to the usage. If a washing is in progress, direct the
product outlet hose into the container collecting the solvent.
5. Close the pump air pressure regulator (C) , pressurise the compressed air supply line
and open the air shut-off valve on the pump (D).
6. Slowly open the air pressure regulator on the pump (C) until it starts working. Have the
pump work slowly until all the air left inside the suction and delivery circuits has been
discharged. Continue until the pump has correctly primed.
7. Only if the pump is being washed with solvent, have it cycle until the clean solvent
fl ows inside the delivery circuit. Then close the pump air pressure controller (C).
Attention!
- Never operate the pump at high speed with no fl uid inside.
- Slow down the pump during priming.
- High running speed without material can damage the diaphragm.
5.2.5

PUMP STOP

For a short-term stop, perform the pressure release procedure (Paragraph 5.2.2).
For a long-term stop, such as an overnight standstill:
1. Clean the pump fl uid section by washing it with a compliant solvent.
2. Leave the solvent inside the pump fl uid section.
3. Perform the pressure release procedure (Paragraph 5.2.2).
For a stop preceding maintenance or disconnection of the pump, see the instructions
given in Paragraph 5.3.
PART NO. ZZB028ENG
Unica 4-270 N
.
28