General Warnings And Notes When Working With The Hx-Unit - Danfoss VACON NX Commissioning And Maintenance Manual

SAFETY
1.2 GENERAL WARNINGS AND NOTES WHEN WORKING WITH THE HX- UNIT
These safety instructions are intended for all who work on the HX-unit. These instructions include
only a part of the complete safety instructions. Read the VACON
safety instructions as well. Ignoring the instructions can cause physical injury or death. It can also
cause serious malfunctions to the HX-unit that is not covered by the warranty. When working on the
HX-unit generally acknowledged safety standards, EU directives and national regulations must also
be followed.
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WARNING
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HOT SURFACE
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Local contacts: http:/ / dr ives.danfoss.com/ danfoss- dr ives/ local - contacts/
Only qualified and authorized electricians and mechanics are allowed to
carry out the installation and maintenance work on the HX-unit.
Do not open the drive section doors while the drives are online. If you
suspect a coolant leak in the drive section, shut down the drives and
disconnect the power to them before opening the drive section cubicle
doors.
When working with the HX-unit together with the AC drive, also follow
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the VACON
prevent any accidents.
Any installation work on the HX-unit must be done with power off. The
power must not be reconnected before the installation work is
complete.
The primary cooling circuit can contain hot coolant (over +50C) during
normal operation. Serious burns are possible. Before performing
maintenance, switch off the unit and allow it to cool down.
The primary cooling circuit can contain high-pressure coolant (6 bar)
during operation. Release the pressure in the HX-unit before
performing maintenance. Use safety goggles.
The HX-unit must be positioned in a non-
pose a threat to any main systems or persons.
The coolant consists, depending on the project, of plain drinking water
or of a mix of water, propylene glycol and corrosion inhibitors. Glycol
and corrosion inhibitors are dangerous to health. If you get coolant
mixed with glycol or corrosion inhibitors in your eyes, on your skin, or in
your mouth, seek medical advice.
temperature control to the secondary circuit. If the project specified
flow and temperature for the secondary circuit is not met the warranty
is not valid.
Retain these operating instructions during the entire life cycle of the
HX-unit.
The HX-unit should always be transported empty (that is, without
coolant) to prevent damage caused by low and high ambient
temperatures.
Do not allow any force or vibrations to enter the unit through the
secondary circuit pipe connections or through the fixing points of the
HX-unit. This will shorten the MTBF (mean time between failure) of the
HX-unit.
If the HX-unit is purchased without a cubicle, place it inside a cubicle of
choice and fix the HX-unit frame to the cubicle frame. If the HX-unit is to
be without a cubicle, it should be fixed to a floor or wall.
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