Starting The Pump; Disassembly And Reassembly - Salvatore Robuschi TSL Serie Instrucciones De Uso

4. STARTING THE PUMP

1. Do not run the pump dry.
2. Start the pump only after filling completely with liquid through the
hole designed for this purpose (replace threaded plug after
each operation). When operating with positive suction head, fill the
pump by gradually and completely opening the inflow gate valve,
while keeping open the delivery gate valve to release air. Close
completely the delivery gate valve and check the suction head's
pressure to make sure the maximum final pressure is not higher than
the one tolerated by the pump.
3. Start the pump with the delivery gate valve closed. Then open
slowly the discharge gate valve, regulating the working point within
the limits indicated on the plate. Make sure the rotation's direction is
the one shown by the arrow on the pump casing. If rotation is in the
opposite direction, reverse the connections of two phases.
4. If the pump is supplied with a packing gland, check that the gland
exerts the right pressure against the seal rings. in case of
mechanicals seals, check that the cover is perfectly closed against
the casing. Open the washing liquid's feeding of the packing or of the
mechanical seal and regulate the flow.
5. If seal chamber's cooling is provided, open the feeding of the
cooling water, regulating its circulation.
6. When the pump is provided with steam preheating chambers, the
steam must flow in from the upper connection and out from the lower
one.
Stopping the pump.
Close the delivery gate valve if a check valve is not fitted.
Close the suction gate valve if a check valve is not fitted
Switch off the motor.
5. PERIODICAL CHECKS AND MAINTENANCE
Caution: disconnect the electrical power before any
servicing operation.
Make sure the pump works in conformity with the range of specified
performance levels and that the absorbed current indicated on the
plate is not exceeded.
Pumps with mechanical seal.
Mechanical seals do not require maintenance. Except for possible
initial leak after the first stat-up, the mechanical seal on the shaft
must function without any loss of liquid. Do not run the pump dry.
When a leak occurs and gradually increases, the seal must be
replaced.
Packing gland.
Pumps with packing glands need a little dripping.
When the dripping through the stuffing box becomes excessive and it
cannot tighten any further, change the seal rings.
(see fig. 4 and tab. 2).
Bearing.
Bearings need to be lubricated with high-quality lithium soap's
grease.
The first lubrication can be enough for about 5000 working hour.
Tab. 1. shows bearings' type and grease quantity.
Type Grease [g]
6403 5
6305 5
6305 5
Tab. 1 Grease characteristics

6. DISASSEMBLY AND REASSEMBLY

Before disassembly the pump, close the suction and delivery gate
valves and drain the pump casing. Be sure to cut off power source
before beginning disassembly.
For disassembly and reassembly, see the sectional assembly
drawing.
When working with dangerous
warnings.
7. SEALS REPLACEMENT
Packing gland
Use seal rings suitable for the liquid that should be pumped. Seal
rings have to be cut suitable (fig. 4). It is necessary to alternate the
gasket slits, so that they don't fit each other.
Type Grease [g] N.L.G.I.
- -
3306 10
3306 15
liquid follow the
l
Size Shaft
TS 30
TS 40-3, 40-8
TS 50-3, 50-8
TS 40-9, 40-12
TS 50-9, 50-12
Tab. 2: Packing gland's dimensions
Mechanical seals.
Stationary part mounting: make sure that the bevel (or chamfer) and
the housing are absolutely clean and free from ragged edges and
traces of working. Damp the housing and the stationary gasket with
alcohol, glycerine or a compatible liquid. Press the stationary part into
the housing using a suitably covered stopper, mounted on the spindle
of a sensitive drill or small press.
Rotary part mounting: make sure that shaft is smooth, clean and free
from sharp edges. Polish the shaft if necessary with a fine abrasive
cloth (about 400 grains) even if it has been ground. After having
damped the shaft with alcohol, glycerine etc, mount the rotary part
turning the seal with a gentle motion opposite to the spring's winding.
Make sure that the two lapped faces come into contact. It is harmful
to put grease, oil, and other similar substances between the seal's
faces which must be absolutely clean. (tab.4)
8. REASSEMBLY
General principle
This operation is carried out by reversing the disassembly
instructions.
In particular remember to:
General principle
This operation is carried out by reversing the disassembly
instructions.
In particular remember to:
a) replace worn out bearings with others of the same type (see tab. 3)
b) replace coupling blocks with others of the same type
Size
TS 30
TS 40-3, 40-8
TS 50-3, 50-8
TS 40-9, 40-12
TS 50-9, 50-12
3
3
3
Size
TS 30
TS 40-3, 40-8
TS 50-3, 50-8
TS 40-9, 40-12
TS 50-9, 50-12
due
5
Original instructions
d D
Fig.4 Packing gland
Chamber Packing
dia dimension ring
d D l
- - - -
30 50 60/50 10
30 50 60/50 10
30/34 50 60/50 10/8
30/34 50 60/50 10/8
Suction side
bearings
6305
3305
3305
3306
3306
Tab. 3 Bearings
Suction side
Discharge side seal
seals
32
30
30
32
32
Tab. 4 Mechanical seals
L
Ring's
number
-
5/4
5/4
6/4
6/4
Discharge side
bearings
6403
6305
6305
6305
6305
30
30
30
28/32
28/32