nash_elmo Industries GmbH
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Order No.: 610.44436.40.000
Subject to change
Edition 09/2003
Shut-Down and Longer Standstills
CAUTION
Danger of bearing damage!
Heavy mechanical impacts must be avoided
during operating and while at a standstill.
8 Shut-Down and Longer
Standstills
8.1
Preparing for shut-down or longer
standstill
WARNING
Improper use of the unit can result in
serious or even fatal injuries!
Have you read the safety precautions in
Chapter 1, "Safety", Pg. 3 f.?
Otherwise you many not carry out any work
with or on the pump-motor unit!
CAUTION
Danger of rusting due to collection of
condensed water in drive motor area!
On drive motors with closed condensed water
openings:
Remove closures occasionally to allow any
water which has collected to drain off.
CAUTION
Danger of bearing damage!
Heavy mechanical impacts must be avoided
during operating and while at a standstill.
Prior to shut-down or longer standstill, proceed
as follows:
•
Switch off the pump-motor unit.
•
Close shut-off device in inlet and pressure
line if installed.
•
Disconnect pump-motor unit from power
supply.
•
Release pressure.
When doing so, open pipes/hoses slowly
and carefully so that the vacuum or gauge
pressure in the pump-motor unit can be
released.
•
Remove pipes/hoses.
•
Provide mufflers on inlet and discharge side
with sealing plugs.
8.2 Storage
conditions
To prevent standstill damage during storage, the
environment must provide the following conditions:
•
dry,
•
dust-free,
•
low-vibration (effective value of vibration
speed v
eff
≤
2.8 mm/s [0.11"/sec]).
•
Ambient temperature: max. 40 °C [+104 °F].
CAUTION
Danger of overheating due to high
temperature!
When storing in an environment with a
temperature of over 40 °C [104 °F], the
winding may be damaged and the grease
change interval may be shortened.
Lubrication of rolling bearings after longer
storage:
The new pump-motor unit may at first be
stored following delivery.
If the time from deliver to commissioning
exceeds the following periods, the lubrication
of the rolling bearings must be renewed:
•
Under advantageous storage conditions
(as specified above): 4 years.
•
Under disadvantageous storage conditions
(e.g. high humidity, salty air, sandy or dusty
air): 2 years.
In these cases open rolling bearings must be
relubricated and closed rolling bearings must
be completely replaced. In this case be sure to
inquire with the Service Department. In
particular, exact information with regard to the
procedure and grease type are required.
WARNING
Improper use of the unit can result in
serious or even fatal injuries!
All maintenance work on the pump-motor unit
must always be performed by the Service
Department!
Maintenance work on the pump-motor unit may
only be conducted by the operator itself when
the related
maintenance manual
on hand!
Inquire with the Service Department!
Commissioning after longer standstill:
Before recommissioning after a longer
standstill, measure the insulation resistance of
the drive motor. With values
≤
1 k
Ω
per volt of
nominal voltage, the winding must be dried.
