EBARA ENR Instruction And Maintenance Manual page 20

- Table 2 shows recommended suction pipe sizes
and eccentric reductions. To avoid air pockets
eccentric reductions must be installed upgrade
towards the pump.
Pump 1500 r.p.m.
size Size
øsuct x ødisch Pipe
50 x 32 65
65 x 40 80
65 x 50 100
80 x 65 125
100 x 80 150
125 x 100 200
150 x 125 250
200 x 150 300
(6) For installations with suction head:
- It is recommended to install a shutoff valve on
the suction pipe to make easy the disassembling
and checking.
20
Nº Description
1 Pump
2 Motor
3 Support
4 Elastic sleeve
5 Check valve
6 Shut-off valve
7 Foot valve
8 Eccentric reduction
Fig.1
3000 r.p.m.
Size
Reduction Pipe Reduction
65x50 80 80x50
80x65 100 100x65
100x65 125 125x65
125x80 150 150x80
150x100 200 200x100
200x125 250 250x125
250x150 300 300x150
300x200 ----
Table 2
- Suction pipe must be installed with a downward
slope towards the pump to avoid the formation of
air pockets.
6.3 Centering
In case of pump provided with motor the join bet-
ween both items is made by using a elastic cou-
pling (with or without spacer).
The pumps are correctly aligned before being
sold, however, when installing, the common base
must be tilted when adjusting the anchorage
bolts. Thus the common base must be adjusted
by placing metal gages under it and aligning the
pump to leave the coupling clearances within the
limits stated on Fig. 2.
If the purchase is made without the motor and
you intend to connect it when installing, correct
the coupling alignment by inserting a fine spacer
under the motor, adjusting the difference within
the limits set in Fig. 2.
----
Alignment is made by moving the coupling
guard, so it is essential to replace it before star-
ting up.
The coupling size depends on the power of the
motor coupled to pump. For more information
consult to EBARA.
(ENGLISH)
Fig. 2