EBARA WINNER Operating And Maintenance Manual page 7

i) make sure - based on the well's size, planned delivery rate
and motor size - that the average flow around the motor is at
least 0.10 m/s. If this is not the case, you will need to apply
a water jacket.
5.1.3. Wiring (FIG. 7-8)
To perform wiring, proceed as directed in PART 1 and - if you
have a single-phase or three-phase version with star/delta
starting – Figures 7-8, which feature colour coding of the power
cord's wires for connection to a control panel.
5.2. IDROGO (FIG. 5)
a) Make sure, when lowering the motor-driven pump into a
well or tank, that it does not sink into the slime, that the
suction filter does not get clogged and that you observe the
distances given in FIG. 5.
b) Keep an eye on the power cord when lowering the pump into
a well: it is a good idea to tie the power cord to the delivery
pipe at 2- or 3-metre intervals.
c) It is best to use rigid pipes (metal or plastic) or flexible pipes
for temporary installations, size G1
tened to the pump with appropriately sized clamps.
d) Secure the pipes to the edge of the tank or reservoir with a
pipe clamp bracket.
e) It is advisable to install a nonreturn valve on the delivery line
at least 4m from the delivery port when operating conditions
are expected to be demanding.
f) Motor-driven pumps feature a small amount of oil (the food
kind), which does not present a source of health risk.
, which should be fas-
⁄
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5.2.1. Starting
If the system features a nonreturn valve on the delivery, the
water level, even with the pump stopped, must never be allowed
to drop below the holes in the suction grid, or the pump will be
drained of water. This leads to pump priming problems, even
after the normal level has been restored.
IDROGO versions feature a small amount of oil (the food kind),
which does not present a source of health risk.
IDROGO motor-driven pumps can be supplied with a float on
application. They will be called:
IDROGO 40A – 80A
Version with float
Plug into the power mains and/or turn on with the switch: the
motor-driven pump starts working. Once the pump has sucked
in enough water to reach the minimum level ("OFF" level), regu-
lated by the float, it will turn off automatically.
The float's working position is factory set so as to assure a mini-
mum suction level in the "OFF" position.
Version without float
Plug into the power mains and/or turn on with the switch: the
motor-driven pump starts working. Once the pump has sucked
in enough water to reach the minimum level, unplug from the
power mains and/or turn off with the switch.
EN
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