WITA Adelino Q, Руководство по обслуживанию

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3. When electric pump is running, the safety warning sign
of “ Shock hazard, no man or animal shall enter ” shall be
arranged at the work site to avoid accidents.
3.4 Additional recommended precations
1. For single-phase electric pumps with built-in automatic
reset thermal protector, it can reset automatically when the
temperature rise of motor reaches a certain value. To avoid
frequent action of protection, the power supply shall be cut off
for troubleshooting prior to further use. For three-phase electric
pumps with power-off reset type thermal protector, after the
protector acts, the power must be cut off for 10min before the
electric pump can run normally. In case of frequent action of
protection, the power shall be cut off for troubleshooting prior to
further use.
2. For electric pumps not used with total lift (the upper and
lower limits of the lift are specified), they must be used within
the effective head range to avoid damage to the electric pumps
due to overload. For electric pumps used with total lift, the
specified pipe diameter must match to avoid overloads to the
pump.
3. The two thinner wires in the outgoing cable of 15~22kW
(two-pole) electric pumps and 11~22kW (four-pole) electric
pumps are thermal protector signal wires (FR). When the
electric pump runs normally, the thermal protector is in close
state and the signal wire is connected. When the electric pump
runs abnormally (overload, phase loss or locked rotor), the
winding temperature will rise and trigger the thermal protector
to act, the signal wire becomes open, and the signal wire
(FR) is acting as the control switch of the thermal protector
(see also the schematic diagram of thermal protector). After
the thermal protection being triggered, the signal wire can be
connected again only after the electric pump is cooled down
and the temperature lowers to the reset temperature of thermal
protector. (Note: When the thermal protector acts and the signal
wire becomes open, the electric pump shall be troubleshooted
prior to further operation).
4. If the position of the electric pump needs to be adjusted or
the electric pump needs to be touched while the electric pump
is running, the power supply must be disconnected first to avoid
accidents.
Shock hazard, no man
or animal shall enter
5. When the electric pump is running, it is strictly prohibited to
submerge cable connections or plug-in plates in the water. If
this is necessary for the extension of the cable, the connection
points must be sealed and covered to avoid electrical leakage
due to water penetration. (See the table below)
6. After the electric pump is turned off, it can be lifted out of the
water only after the electric motor has cooled down to room
temperature to ensure safety.
2. When electric pump is immersed in the
water, the depth shall not exceed 5m, and
it shall be more than 0.5m above the water
bottom. Electric pump shall not immerse into
mud, and the impeller shall be prevented from
being blocked or jammed by water plants or
debris, resulting in malfunction of the electric
pump. The water level should be checked
frequently during operation to avoid the electric
pump operating out of water.
Warning
Notice