Danfoss iSave 50, Operating Manual

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Operating guide | iSave 50 - 70
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180R9357 | AQ265943679828en-00100 2 IOM iSave 50 - 70 | 0 3 .202 3
6.7.4 Torque overload protection on the
iSave
The electric motor and iSave must always be
protected against overload.
As continuously operation the maximum
torque on the iSave must be monitored.
The electric motor must be shut off if the
maximum torque of the iSave exceeds the
defined limit.
If more electric motors are powered by the
same VFD, each electric motor must be
equipped with “torque limit equipment” to
protect the iSave against overload.
Below are examples of equipment which
can measure the load on the electric motor
or limit the torque on the iSave.
The electric motor and iSave must always be
protected against overload.
See Danfoss guide line 180R9372 “APP pumps
and iSave overload protection” in the appendix
10.4.
If torque exceeds the maximum operation
torque, it may lead to an irreparable fracture of
the iSave’s internal parts.
1. VFD with integrated current monitoring
relays.
2. External current monitoring relays suitable-
for VFD control.
7. Commissioning,
start-up and shutdown
The operator ensures that all inspection and
installation work is performed by authorised,
qualified specialized personnel who are
thoroughly familiar with the manual..
• Before starting up the iSave and the
high-pressure pump, make sure that the
following requirements are met:
• The iSave has been properly connected to
the electric power supply and is quipped
with all protection devices in accordance
with EN 60204-1
• Check that all motor protections are
properly set.
• All safety equipment, auxiliary equipment
and connection required are properly
connected and operational.
• Check all bolts in all connections and in the
foundation of the iSave and the pumps.
• All pipes are flushed, free from debris and
full of water.
• The iSave has been bled and is full of
water.
• At pressure lower that 10 barg, check the
system for leakage.
Slowly raise the pressure in the system and set
all pressure switches to the correct limit and
continually check all connections.
• If pressure relief valve is present, set
pressure relief valve on both low and
high-pressure at the maximum system
pressure.
• Check high-pressure hoses for proper
assembly and inspect for external leakage
for all connections.
• At low pressure, start the iSave and check
direction of rotation.
• “Start and stop procedure” Guide line
180R9213. - appendix 10.2.
7.2 Support
Danfoss A/S offers commissioning and service at
system manufacturer’s location.
Rated quotes are offered upon request.
7.3 Commissioning
Before starting up the iSave and the highpres-
sure pump, make sure the following
requirements are met:
7.1 Safety regulations