ABB LS4000 Operating Instructions Manual page 52

Checking the
electrical system
Approving the
analyzer for startup
52
Test object Requirement
The transmitter unit and receiver unit are installed so that
the following requirements are met:
 The housings do not come into contact with any over-
 The housings are not improperly heated by the heat
Test object Requirement
Cable condition All cables are undamaged.
Cable types All connections are made using the specified cable type.
Shielded cables The shielded cables meet the following requirements:
 The cables are fed through metal cable glands
 The braided shield is properly connected to the cable
Supply voltage The supply voltage is consistent with the information on
the name plate of the junction box.
Connecting All connecting cables meet the following requirements:
cables
 The cables are properly installed and secured
 The cables in the junction box are connected using the
 The cables in the cable glands are sealed so that no
 All of the unused cable wire ends are insulated or
Cable glands  The cables in the cable glands on the transmitter unit
Potential equali- The following devices are connected via a ground cable to
zation terminal the local potential equalization terminal:
 Transmitter unit
 Receiver unit
 Junction Box
If...
all the checks have been com-
pleted with positive results
at least one check gave a nega-
tive result
Operating instruction LS4000 for NH
pressure in the process gas path
generated at the contact point of the process gas path
(purging flange).
gland
correct pin assignment
dust can penetrate
grounded
and receiver unit are fitted in a fixed position and can-
not move.
then...
the analyzer may be put into use.
the analyzer may not be put into use.
the fault must be rectified.
the check must be repeated.
and H
3 2
O OI/LS4000/NH3/H2O-EN