wiwa HERKULES PFP, Руководство по эксплуатации

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Translation of the original operation manual
HERKULES PFP
37
HERKULES PFP_BAoDB_en_1402_B · rs
Troubleshooting
7 Troubleshooting
Fault Possible cause/s Remedy
The pump does not cycle whether
the spray gun is triggered or the
drain valve is opened.
1. The compressed air shut-off
valve is closed.
2. The air motor is defect.

Open the compressed air shut-
off valve.

Repair the air motor – contact
customer service if necessary.
Pump runs but no material is en-
couraged.
1. Bottom valve ball does not rise
(stuck).
2. Bottom valve does not close.

Hit the bottom valve lightly from
the side (hammer) – if that does
not help, press on the ball from
below using a peg or screwdriver
until loose.

Remove the bottom valve and
clean the ball and seat thoroughly.
Pump cycles but does not stop when
the spray gun is closed.
1. Packing and/or valve worn.

Replace parts.
Pump cycles evenly but the required
operating pressure can not be
reached.
1. Air supply / pressure is too low.
2. Spray nozzle is too big.
3. Spray nozzle is worn
4. Air motor is frozen (runs too
slow).

Increase the inbound air pressure
with the regulator and check the
diameter of the inbound air hose.

Use a smaller spray nozzle.

Replace the spray nozzle.

If possible, reduce the inbound
air pressure.
Fill the oiler with anti-freeze (Gly-
santine) and adjust it.
Pump cycles unevenly (different
stroke speeds on the upward and
downward strokes) and the required
spray pressure can not be reached.
1. The viscosity of the coating is too
high (suction loss).
2. Bottom valve leaks (pump only
stops on the upwards stroke
when the spray gun is closed).
3. Piston valve leaks (pump only
stops on the downwards stroke
when the spray gun is closed).
4. Upper or lower packings leak
(wear).

Dilute or warm up the coating
material.

Remove the bottom valve and
clean the ball and seat thoroughly.

Clean the ball and seat in the dual
piston and replace if necessary.

Replace packings.
Coating material spills out of the air
motor anti-vaccum hole.
1. Packings are worn.

Replace packings.
Note: Do not close or block the
ventilation hole!