VERDER PACKO ZL Series, Руководство по эксплуатации и техническому обслуживанию

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Inspect the seal of the gland. The gland must match the diameter of the connecting cable used.
Bending of the cable beside the gland must not allow water to penetrate. (Allow the cable to be
routed downwards when it leaves the motor.)
Connect the motor in star or delta according to the designation on the name plate of the motor and
in accordance with the diagram that is installed in the terminal box. Do not connect the motor if you
have any doubts regarding the interpretation of the connection diagram. If in doubt please contact
PACKO. Never check the direction of rotation of the pump when the terminal box is open. The
technician is responsible for complying with the regulations relating to electrical compatibility in the
country where the pump is installed.
The voltage and the frequency stated on the name plate of the motor must be observed.
(Tolerance of 5 % for the voltage, and 1 % for the frequency.)
For pumps whose power exceeds 7.5 kW, special starting provisions must be provided (star-delta
starter, soft starter, or starting with frequency converter).
The installation of an overcurrent protection device is always mandatory.
3.4 CONNECTING THE FLUSHING MECHANICAL SHAFT SEAL
In a pump with flushing, the sliding surfaces of the mechanical seal are lubricated and/or cooled
by a different liquid than the pumped liquid. This flushing liquid is supplied and discharged via the
two connections in the pump casing.
Either connect the water supply to one of the connections. Adjust the flow so that the water drips
slowly from the other connection (± 10 liters / hour). Preferably, a hose is placed at the outlet to
drain the leak next to the pump. Never provide a valve or throttle in the flushing liquid outlet to
prevent pressure build-up in the flushing chamber.
Or connect the flush to a quench reservoir of at least 5 liters. To ensure adequate circulation of the
flushing liquid, its viscosity must not exceed 100 centiPoise, the hoses used must have an internal
diameter of at least 14 millimeters and the hoses together must not be more than 2 meters in
length. There must be no bridges in the hoses where air can accumulate and thus hinder
circulation. Place the reservoir approximately 70 centimeters above the pump. The connection of
both hoses to the reservoir must be below the fluid level. Refill the quench container regularly and
check for proper circulation. When the temperature in the reservoir rises above 60 ° C, it must be
cooled or switched to a flow-through quench as described above.
In both cases, the pressure in the flushing chamber must never exceed 0.5 bar!
3.5 START UP
1. Before connecting the suction and discharge pipe work the entire system must be
thoroughly cleaned to prevent damage from welding, grinding and other residues.
2. Before starting, bump the motor to check if the motor fan is rotating clockwise or
counterclockwise when seen from the motor back. (Bump means to momentarily apply
power to the motor and then immediately remove power).
3. Direction of rotating must only be checked with a completely filled system. Where double
mechanical shaft seals are installed the flush supply must be operational. Any dry running
will result in seal damage.
4. The motor rating plate should be checked to ensure that it is in accordance with the
available electrical supply. It is essential that the full load current is not exceeded to
prevent motor overload.
5. Before start up any safety guards required by local statutory regulations should be fitted.