DAYLIFF DHF, Инструкция по установке и эксплуатации

Страница: 5 / 12

2
PUMP DATA
Model
Motor
Voltage
(V)
Dimensions (mm)
Weight
(kg)
Power
(kW)
2.2
1.5 1x240
3x415
19 9.8
DHF300
DHF200
Current
(A)
3.5
W
207
238
H
259
313
L
369
392
25 3
2
DN1
(”)
3
2
DN2
(”)
2. INSTALLATION
Foot Valve
UPWARD SLOPE
TO SUCTION
Max 5m
Min 50cm
• Site in a dry, well ventilated and weather proof
location with an ambient temperature of no
0
more than 40 C.
Ÿ
Locate on a solid flat surface ensuring the
shaft is in a horizontal position.
Ÿ
Ensure that the diameter of the suction pipe
is at least the size of the pump suction inlet. If
the suction depth exceeds 4 meters then a one
size larger diameter pipe should be used,
though for maximum pump performance
suction height should be minimised.
Ÿ
If there is negative suction (i.e. the pump is above the suction water level) the
suction pipe must be slightly angled upwards towards the pump inlet to avoid the
formation of air locks. It must also be immersed in water by at least 0.5m to
avoid the formation of vortexes and a good quality foot valve must be fitted.
Ÿ
Ensure that all suction pipe connections are completely airtight or else the
pump will not operate. The diameter of the delivery pipe must be chosen to suit
the flow rate and pressure required at the delivery point though must not be
smaller than the pump outlet size. It is also advisable to fit a non-return valve and
isolating valve on the delivery outlet. This measure is essential if the delivery
pressure exceeds 20 meters.