EN
VAL_SC Rev24 - Operating Instructions
Page 11 / 32
10. SPARE PARTS
10.1.
Spare-parts request
When ordering spare parts, please quote their
designation, position number in the cross section
drawing and rated data from the pump name plate
(type, date and serial number).
The spare parts request shall be sent to CALPEDA
S.p.A. by phone, fax, e-mail.
11. ESIGNATION OF PARTS
Nr. Designation
12.00
Casing cover
12.20 Screw
13.12
Delivery side counterlange
13.16 Screw
13.20 Nut
14.00
Pump casing
14.24 Screw
14.29 Washer
28.00 Impeller
28.04
Impeller nut (or screw)
28.08 Washer
28.20 Key
50.00
Lower bearing bush housing
52.00
Bearing sleeve
52.04
Grub screw
54.00
Support column
54.04
Grub screw
54.08
Grub screw
56.00 Adapter
64.00
Pump shaft
64.08
Shaft sleeve
64.20 Key
64.24
Shear pin
70.00
Motor cover, pump side
70.18 Screw
70.20 Screw
73.00
Pump side ball bearing
76.00
Motor casing with winding
76.04
Cable gland
76.54
Terminal board, set
78.00
Shaft with rotor packet
81.00
Fan side ball bearing
82.00
Motor end shield, fan side
82.04
Compensating spring
82.08 Screw
88.00
Motor fan
90.00
Fan cover
90.04 Screw
94.00 Capacitor
94.04
Capacitor collar
98.00
Terminal box cover
98.04 Screw
98.08 Gasket
Changes reserved.
12. TROUBLESHOOTING
OFF
WARNING
: Turn off the power supply before performing any operations.
Do not allow the pump or motor to run when dry even for a short period.
Strictly follow the user instructions and if necessary contact an authorised service centre.
PROBLEM
PROBABLE CAUSES
POSSIBLE REMEDIES
1)
The motor does
not start
1a) Unsuitable power supply
1b) Incorrect electrical connections
1c) Engine overload protective device cuts
in.
1d) Blown or defective fuses
1e) Shaft blocked
1f) Motor failed
1a) Check that the mains frequency and voltage are suitable.
1b) Connect the power supply cable correctly. Check the setting of the
thermal overload protection.
1c) Check the power supply and make sure that the pump shaft is turning
freely. Check the setting of the thermal overload protection.
1d) Replace the fuses, check points a) and c)
1e) See “Blocked pump” instruction booklet
1f) Repair or replace the engine.
2)
Pump blocked
2a) Prolonged periods of inactivity .
2b) Presence of solid bodies in the impeller
2c) Bearings or bearing sleeve siezed
2a) Unblock the pump by using a screw driver to turn the relevant notch
on the back of the shaft.
2b) Remove any solid foreign bodies inside the impeller
2c) Replace the bearings or bearing sleeve.
3)
The pump
functions
but no water
comes out
3a)
Insuficient immersion depth
3b) Possible iniltration of air.
3a) Increase the immersion depth
3b) Increase the immersion depth
4)
Insuficient low
4a) Pipes and accessories with diameter
too small
4b) Presence of deposits or solid bodies
in the impeller
4c) Rotor deteriorated
4d) Worn rotor and pump case
4e) Gases dissolved in the water
4f)
Excessive viscosity of the liquid
pumped
4g) Incorrect direction of rotation
4a) Use pipes and accessories suitable for the speciic application
4b) Clean the impeller and install a suction ilter
4c) Replace the impeller
4d) Replace the impeller and the pump casing
4e) Perform the opening and closing manoeuvres through the feeder gate
4f) The pump is unsuitable
4g) Invert the electrical connections in the terminal board
5)
Noise and
vibrations
from the pump
5a) Worn bearings or bearing sleeve
5b) Unbalanced power supply
5a) Replace the bearings or bearing sleeve
5b) Check that the mains voltage is right
