Ragazzini RC2-Mxl, Instructions For Use Manual

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INSTRUCTIONS FOR USE
28
LM05EN002
H TROUBLESHOOTING
PROBLEMS CAUSES SOLUTIONS
THE PUMP DOES NOT PRIME The pump has been idle for a
prolonged period and the procedure
recommended in F6 was not carried
out beforehand Leave pump running. After a short
period it will work efficiently again.
If the problem occurs when drawing
fluid from an underground tank,
prime the pump from an above
ground tank.
The suction pipe is crushed or
blocked In addition to meeting the
requirements given in F6, the
suction line must be equipped with a
rigid fitting at its end to guarantee
complete opening.
Foreign body under the valves See I.5.1
Door seal not intact or incomplete Replace the seal (see I.5.1)
POOR EFFICIENCY Air entering the suction line Check pipe seals and possible pipe
ruptures.
Excessively long suction pipeline Comply with the indications given in
F.6 as far as possible
Excessively worn valves and caps Proceed with the replacement
following the indications given in
I.5.1 and I.5.2
High percentage of gas in pumped
liquid Contact the Technical Service
Reversing valve excessively worn STAINLESS STEEL BALL VALVE
Replace the spherical seals.
(Contact the Technical Service)
DIFFICULTY IN OPERATING THE
VALVE Build-up of deposits inside the valve
Foreign body stuck in the half-open
valve It is advisable to operate the valve
frequently
(with the machine
stopped).
PIPES VIBRATION Insufficient air cushion in the pulse
dampers Allow air to be sucked in for a short
time.
Presence of a foreign body under
the valves See I.5.1
Restrictions in the suction line Comply with the indications given in
F.6 as far as possible
Contact the Technical Service
LOSS OF THRUST FROM THE
GLAND Worn rings Replace the entire pack of rings
following the indications given in
I.5.3 and I.5.4
Rods worn out Replace the rod following the
indications given in I.5.3 and I.5.4
LOSS OF LIQUID FROM THE
VALVE GLAND Sealing system loose or worn out

Tighten the seal

Replace the seal (contact the
Technical Service)
OIL LEAKS FROM THE GUIDES Excessive oil level Check that there have been no
liquid infiltrations in the gearbox