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Idiomas disponibles
Idiomas disponibles
REPLACEMENT OF THE IMPELLER
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unscrew the fixing screws and extract the motor unit
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place the motor unit horizontally and blocking it with wedges so that it does not roll
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lock the impeller with a clip or large screwdriver between the blades, then unscrew the locking screw and remove
the washer; if the impeller is blocked, use a rubber hammer to beat
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remove the key from the shaft, then remove the impeller, if necessary using two levers on the back
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clean and grind the end of the shaft, the key and the impeller hole with emery cloth
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grease the shaft end, reinsert the key in its seat checking that the groove hole in the impeller is aligned with the key
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mount the impeller and washer and tighten the fixing screw keeping the impeller with a screwdriver or a clip
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reposition the motor unit vertically on the pump body and tighten the fixing screws
PROCEDURE FOR OIL CHANGE
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unscrew the fixing screws and extract the motor unit
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unscrew the oil cap and replace always the o-ring on it
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placing the pump horizontally, drain the oil into a container to check it
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fill up new oil with viscosity 10cst (SAE 10W);
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reassemble in reverse order
If the mechanical seal has failed, the oil chamber may be under pressure: to avoid splashes, hold a cloth on the oil cap
and unscrew carefully. Do not dispose of used oil in the environment, deliver it to appropriate collection centers.
PUMP MODEL
PROBLEMS
MOTOR DOES NOT START
THE PUMP IS BLOCKED
INSUFFICIENT FLOW RATE
OIL QUANTITY
SEAL CASING
D 3211
0,25 l
D 4012
0,60 l
D 4013
D 4017
0,75 l
D 4018
D 5020
1,40 l
D 5022
IMPROPER OPERATION
Any intervention must be carried out by qualified personnel!
POSSIBLE CAUSES
the control device indicates a fault
the pump starts in manual mode
there is no voltage in the system
other problems
the pump is overloaded
the current limiter has too low a regulation
the motor protection switch is damaged
not all system phases are in voltage
other problems
pump body, impeller, valves, pipes: clogged
impeller and diffuser are worn out
too high delivery height
other problems
MOTOR CASING
0,7 l
VANGUARD MOLIGUARD WU-FU
or equivalent different brand
check that the pump is cooled by the liquid and
that the impeller rotates freely, check that the
thermal protection is inserted correctly
check that the control equipment, level
regulators and thermal sensors work
check that the main switch is activated, all the
phases of the power cable are under load, the
motor cable is not interrupted, the fuses have
continuity and are tightened
contact an authorized workshop
check that the density of the liquid is not
excessive; disconnect the power supply and
check that the impeller rotates without difficulty
adjust the current limiter
replace the motor protection switch
check the motor fuses or contact an electrician
contact an authorized workshop
suitably clean pump body, impeller, valves, pipes
replace impeller and diffuser
change the type of pump or impeller with the
most suitable types
contact an authorized workshop
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OIL TYPE
MARCOL 82
ADVICE
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