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5
Preparing for commissioning
32 / 72
America
January 2017
Check the settings of the control transformer
DANGER
Electric shock
Dangerous electrical voltage
➯
Work on the electrical equipment
may be performed by specialized
electrical technicians only.
➯
With the speed-controlled types
(RS) there is a risk of electric
shocks due to charged capacitors!
Isolate the compressor and wait
10 minutes before touching any
electrical parts.
➯
Check the DC bus voltage.
The control transformer is preset to the rated
voltage at the factory.
In practice, it has been found that the actual
supply voltage can deviate from the rated
voltage.
In order to adapt to local conditions, the
correct setting must be made on the control
transformer when the compressor is under
load, by measuring the control transformer
output voltages and adjusting them as needed.
Several taps are provided for this purpose (see
wiring diagram).
NOTICE
Property damage
Incorrect control transformer settings can cause
problems in operation.
➯
Checking the control transformer settings
is part of commissioning and periodic
inspection and maintenance, because grid
voltage conditions can change.
5.4
Cooling water connection
1
2
3
4
[1]
Compressed air connection
[2]
Cooling water connection
[3]
Condensate connection
[4]
Electrical connection
WARNING
Contamination with Legionella
Health hazard with open-loop cooling
systems.
➯
Continuous monitoring of water
quality and germ count in the
cooling circuit.
Connect the compressor to the cooling water
network
The compressor is fully assembled at the factory.
The connection to the cooling water network
should be made with a flexible line, that is, a
compressed air hose or compensator.
Use only connections that are the correct size.
1
Ensure that the lines can be connected with no
tension.
2
Connect the connection line to the cooling
water inlet and outlet of the compressor.
3
Shut-off valves must be installed at the cooling
water inlet and cooling water outlet.
4
Secure hose lines.
Cooling water inlet and cooling water outlet
•
European version: EN 10226-1 Rp 1 1/2
•
USA/CANADA version: 1 1/2 NPT
Summary of Contents for L160 110A V2
Page 1: ...User manual Screw compressor L160 L290 V2 L160RS L290RS V2 America ZS1149274 03 January 2017...
Page 7: ...Foreword 1 January 2017 America 7 72 1 6 Rating plate Fig 1 1 Rating plate...
Page 69: ...Appendix 9 January 2017 America 69 72...
Page 70: ...9 Appendix 70 72 America January 2017...