Troubleshooting - Samoa PM80 Serie Guía De Servicio Técnico Y Recambio

CONNECTIONS
AIR CONNECTION: compressed air supply must be set between 2 and
7 bar (30 and 100 psi). The recommended pressure is the lowest one
that fits the flowrate requirements, being 7 bar (100 psi) the limit
air pressure which should never be overpassed. An air closing
valve must be installed, in order to be able to close the compressed air
line at the end of the day.
WARNING! In ATEX installations, ensure
!
the grounding cable is properly attached
to the pump and to the installation ground.
GAUGE PORT:
Autoclave Engineers
tube, 7/16-20 thread (SF250CX20).
OPERATION
This pump is self–priming. To prime it the first time, it is convenient to
connect the air supply to the pump while keeping the outlet valve
opened, and increase the air pressure slowly from 0 to the desired
pressure by using a pressure regulator.
Once grease starts flowing through all the outlets, the pump is primed.
The pump starts to pump when an outlet valve is opened.

TROUBLESHOOTING

Symptoms
The pump is not working or there is
no grease delivery.
The pump begins to operate very fast.
The pump keeps on operating
although the grease outlet is closed.
Grease leakage through the warning
hole on pump body (63)
Air leakage through the air outlet
muffler (22).
Grease output too low or diminishes
over time.
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
AIR INLET
3/4" NPT
Medium Pressure port for 1/4"
Possible Reasons
No suitable air supply pressure.
Some outlet circuit element is clogged or closed.
There is an air pocket in the grease inlet area.
The drum is empty or the grease level is beneath the
suction tube inlet.
There is a grease leakage at some point in the circuit.
Contamination in the upper valve.
Contamination in the foot valve.
Scratched piston rod (51) or worn or damaged seals
(54, 56, 59).
Damaged or worn piston O ring (36).
The air seals (6, 10) of the inverter assembly are
damaged or worn.
Damaged or worn spool (18) seals.
Contamination in the foot valve.
Contamination in the upper valve.
The exhaust muffler is clogged by compressed air dirt
or lubricant.
GREASE CONNECTIONS: only ultra high pressure fittings/accessories/
tubing must be used. The pump is able to deliver grease up to
1400 bar (20.000 psi) when fed at 7 bar (100 psi) of air pressure.
Installation components must be rated to withstand that pressure. A
gauge port is provided, being factory closed with a proper plug.
WARNING! CONNECT ONLY ULTRA HIGH PRESSURE
!
ACCESSORIES WITH MINIMUM PRESSURE RATING OF
1400 bar (20.000 psi).
MATERIAL OUTLET:
Autoclave Engineers Medium Pressure port for 9/16"
tube, 13/16-16 thread (SF562CX20)
Fig. 3
NOTE: It is important that the foot valve do not come in contact with dirty
areas, such as a workshop floor, because it may become contaminated with
dirt or other particles that can damage the seals.
Increase the air supply pressure.
Clean or open the outlet circuit.
Stir and repack the grease.
Replace the drum or insert the suction tube until
the inlet reaches the grease level.
Verify and tighten or repair.
Disassemble and clean. Replace if damaged.
Disassemble and clean. Replace if damaged.
Verify the piston rod (51) and replace damaged
/ worn parts.
Replace O Ring (36).
Replace the air seal (6, 10).
Replace the spool (18).
Remove and clean. Replace if damaged.
Remove and clean. Replace if damaged.
Replace the muffler felt (25, 27).
EN
Solutions
5
R. 02/20 853 831