EN
REPAIR AND CLEANING PROCEDURE
PRESSURE VALVE (Fig. 6)
• Unscrew the suction tube.
• Unscrew the pressure valve seat (C).
• Clean or replace the valve (A) and ring (B).
FOOT VALVE (Fig. 7)
• Attach the suction tube assemble to a vice and unscrew the foot valve
body (B) from the suction tube. Be careful not to damage the O-ring (A).
TROUBLESHOOTING
Symptom
Pump does not start.
Pump reciprocating but not delivering.
Pump runs irregularly.
Oil leak through air muffler.
Pump is running despite the outlet
being closed.
TECHNICAL DATA
Maximum air pressure
Minimum air pressure
Maximum delivery
Air inlet thread
Oil inlet thread
Oil outlet thread
Air piston diameter
REPARATION KITS
SPARE PARTS SEE PAGE 20.
4
835 806 R. 02/23
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
Possible cause
No or low air pressure.
Motor damaged.
Air motor blocked by dirt.
No oil.
Pressure valve damaged.
Foot valve damaged.
Pump cavitation.
Fluid packing damaged.
Pressure valve is damaged.
Dirt in foot valve.
SAE 30 - 22 ºC
7
10 bar (140 psi)
3 bar (40 psi)
6
52,8 l/min
1/4" NPSM (H) / (F)
5
1" BSP
4
3/4" NPSM (H) / (F)
50 mm (2")
3
2
1
0
Solution
Check the air line valve, regulator and quick coupler.
Check air motor mechanism. Check seals as
required and replace any faulty parts.
As above. Check for free movement and for foreign ob-
jects in piston valve etc.
Check oil level in drum/tank.
Make sure that pressure valve is free to move as required.
Check spring and valve part for correct operation and
seating. Check for foreign objects jammed in foot valve.
Decrease the air pressure in order to reduce the speed.
Change the damaged packing.
Change the damaged packing.
Clean/ check the damaged parts.
Cycles / minute
75
150
250
100
90
80
70
60
50
40
30
20
10
0
Gal / min
0
2
5
8
0
10
20
30
l/min
A
B
Fig. 6
C
AIR CONSUMPTION
300
350
200
3
100
4
5
150
6
7
200
8
250
9
10
300
310
11
320
330
335
11,83
7 bar
100 psi
10
13
15
40
50
60
A
B
Fig. 7
3,5
100
4
50
5
2
150
3
6
100
4
7
200
5
150
8
6,00
250
9
7
200
210
7,5
9,5
220
280
9,89
225
7,95
6 bar
5 bar
90 psi
70 psi