Vieäc laép ñaët ñuùng quy caùch vaø kích thöôùc oáng huùt ñaëc bieät
quan troïng ñeå vaän haønh bôm an toaøn.
Caùc yeáu toá sau caàn phaûi ñöôïc tính ñeán:
A)
Ñöôøng kính trong cuûa oáng ñöôïc choïn
theo löu löôïng bôm (Baûng
C
).
Caùc ñaàu noái bôm coù kích thöôùc lôùn hôn
cho caùc öùng duïng khaùc nhau.
B) Chieàu daøi cuûa oáng.
Chieàu daøi oáng huùt caøng ngaén caøng toát.
Vaø chieàu daøi phuø hôïp nhaát theo baûng
C
:
Chieàu saâu huùt lôùn nhaát laø 1,5 m
Toång chieàu daøi cuûa oáng huùt: 2,5m
C) Sô ñoà kieåu laép ñöôøng oáng huùt.
Xem hình minh hoaï H.
7
n
n
Maët baèng laép ñaët thieát bò phaûi saïch seõ vaø an toaøn cho vieäc vaän
haønh vaø baûo döôõng thieát bò. Chuù yù ñeán
khoaûng khoâng ôû phaàn ñaàu huùt, ñaàu ñaåy
cuûa bôm vaø nuùm ñieàu chænh (H
6
).
Neáu bôm ñöôïc laép ñaët ôû ngoaøi trôøi thì
caàn thieát phaûi coù maùi che, ñaëc bieät laø khi
bôm ñuôïc keát noái vôùi caùc thieát bò khôûi
ñoäng ñieän vaø caùc thieát bò ñieàu khieån
khaùc.
Ñaàu bôm baèng nhöïa PVC chæ coù theå
laøm vieäc ôû nhieät ñoä moâi tröôøng vaø nhieät ñoä dung dòch toái ña laø
0
40 C. Neáu caàn thieát thì coù theå söû duïng theâm thieát bò che bôm
khoûi aùnh naéng maët trôøi vaø kieåm tra nhieät ñoä cuûa dung dòch.
Chæ daãn laép ñaët ñuùng quy caùch
Provide with adequate clearance areas and safe access for
operation and maintenance, in particular
in front of the hydraulic side and of the
adjustment knob (fig.
6
).
If the pump is installed outdoors, a
shelter is recommended, specially
when the pump is equipped with electric
actuators or other delicate devices.
PP pump heads can work properly only
at ambient temperature and metered
0
liquid temperatures below 40 C. If neces sary, provide suitable
protection from sun rays and check the temperature of the
metered liquid.
Instructions for a proper installation
H. 6
HYDRAULIC
SIDE
ADJUSTMENT
SIDE
A proper installation and sizing of the suction line are of particular impor-
tance for a correct operation of the pump.
The following factors shall be taken into account:
A) Pipe inner diameter
The pipe inner diameter will be chosen as a
function of the pump flow rate (see table
C
).
The pump connections are oversized, in
order to cover all applications.
B) Length of piping
Suction piping is to be as short as
possible. Following the indications of
table
C
it issuggested:
l
Max suction lift 1,5 metres
l
Total length 2,5 metres
(upright plus horizontal)
C) Arrangement of the suction line
For the arrangement of the suction line see fig.
7.
Suction line
Ñöôøng oáng huùt
Baûng C
Table C
0÷15
4x6
-
-
-
0÷30
6x10
-
1
/
4
"
-
0÷125
-
DN 10
3
/
8
"
φ
16
0÷155
-
DN 15
1
/
2
"
1/2" ANSI
0÷260
-
DN 20
3
/
4
"
25
3/4" ANSI
0÷420
-
DN 25
1
"
32
1" ANSI
Moái töông quan giöõa löu löôïng
vaø kích thöôùc oáng
Relationship between flow rate and pipe size
LÖU LÖÔÏNG
FLOW RATE
L/h
PIPE WITH
FITTINGS
FLANGED
PIPE
THREADED
PIPE
PVC GLUED
PIPE
H. 7
VAN LOÏC
FILTER FOOT VALVE
KÍCH THÖÔÙC LAÉP ÑAËT
/ ASSEMBLING AREA
Ñuùng
Right
Ñuùng
Right
Sai
Deã bò taéc bôm
Wrong
Risk of clogging of pump valves
Sai
Taïi ñIeåm cao nhaát oáng daãn dung
dòch bò gaãy
Wrong
In the highest point the fluid vein
breaks
LAÉP
ÑAËT
INSTALLATION
2
6
20
φ
φ
φ
PHAÀN
T
HUYÛ
L
ÖÏC
PHÍA
ÑIEÀU
CHÆNH
ÑAÀU NOÁI
OÁNG
OÁNG NOÁI
BÍCH
OÁNG NOÁI
REN
OÁNG NOÁI
NHÖÏA
800
700
