11. Start the pump and check the operation for
abnormal noise or vibrations.
12. After startup, the actual pump duty point must be
established. Make sure the operating conditions
are met.
The pump may only be started for a
short period without being submerged
for checking the direction of rotation.
Always operate the pump in accordance with
established routines and perform scheduled checks
of pump monitoring equipment and accessories.
Make sure that the pump and equipment settings
cannot be changed by unauthorised persons.
7. Storing the product
For periods of storage, the pump must be protected
against moisture and heat.
After a period of storage, inspect the pump before
putting it into operation. Make sure that the impeller
can rotate freely. Pay attention to the condition of the
shaft seals, O-rings and the cable entries.
Leave the cable-end protectors and control
cables on the power until starting the
electrical connection. Whether insulated or
not, the free cable end must never be
exposed to moisture. Non-compliance with
this may cause damage to the motor.
If the pump is being stored for more than a
month, turn the impeller at least every
month to prevent the seal faces of the
lower mechanical shaft seal from seizing
up.
Avoiding this may cause damage to the
shaft seal when the pump is started.
If the impeller cannot be turned, contact an
authorised service workshop.
WARNING
Crushing hazard
Death or serious personal injury
‐ Do not turn the impeller by hand.
Always use an appropriate tool.
On pumps fitted with guide vane, be
careful not to damage the guide vane
when turning the impeller.
8. Servicing and maintaining the
product
Pumps with inlet flange DN 100 or DN 150
(pressure ranges S and H) in vertical
position do not comply with the stability
requirement of standard EN 809 (stable
when tilted to an angle of 10 °). Use a
service stand to support the pump.
Product numbers for service stand
Inlet flange size DN 100: 98669229.
Inlet flange size DN 150: 98669251.
WARNING
Crushing hazard
Death or serious personal injury
‐ Always support the pump using lifting
chains or place it in horizontal position
to secure stability.
DANGER
Electric shock
Death or serious personal injury
‐ Before starting any work on the
product, make sure that the power
supply is switched off and it cannot be
switched on unintentionally.
DANGER
Electric shock
Death or serious personal injury
‐ Make sure the pump is grounded.
The maintenance and service work on
explosion-proof pumps must be carried out
by Grundfos or an authorised service
workshop.
Do not open the pump if the ambient
atmosphere is explosive or dusty.
Maintenance and service must be carried
out by qualified persons.
Before carrying out maintenance and service, make
sure that the pump is thoroughly flushed with clean
water. Rinse the pump parts after dismantling.
Pumps running normal operation must be inspected
every 2000 operating hours or at least once a year. If
the pumped liquid is muddy or sandy, the pump must
be inspected every 1000 operating hours or every six
months.
24
English (GB)
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