Operating Manual CHM 8k
R1.7 / 01-2020
Installation
18
Figure 9 Fixing elements.
1 Dowel S12
2 Leveling screw 5 mm (integrated into the base of the device)
3 Screw DIN 571-10 x 140-ZN
4 Washer ISO 7093-10.5-A2
5 Washer ISO 7093-10.5-KST/PA
6 Concrete foundation
Vertically align the
CHM 8k using the levelling screws integrated into the base of the device (with a
spirit level: place on one side wall and on the front). Tools required: 22 mm spanner / wrench.
Tighten the fixing screws. Tools required: 17 mm spanner / wrench.
Remove the handle protection (edge protection profile) from above and secure in the base for the
next transport.
6.2 Electrical installation
NOTICE
Incorrect installation may result in damage to the equipment.
The electrical connection of the
CHM 8k may only be carried out by a qualified electrician of
G. Lufft GmbH or another qualified electrician. Failure to comply will result in the loss of
warranty and warranty claims.
The operator must meet all the requirements for connecting the
CHM 8k ceilometer in
accordance with EN 61010-1, e.g., installation of a connection box.
An overvoltage and lightning protection system is installed within the Ceilometer. If the
customer needs to measure the isolation resistance, then it is allowed and needed to use 250V
DC. The value of the isolation resistance must be above 1 M
Ω.
Figure 10 shows a schematic sketch of the electrical installation of the CHM 8k. The power supply (1) to
the device must be connected via an external mains switch (2) which needs to be easily accessible to cut
the power to the device when required.
It must be marked as belonging to the CHM 8k and a pre-fuse
10A gG time-lag must be used only for 230VAC-devices. The connection box should be installed at a
distance of < 3 m. An external lightning conductor (7) must be installed to protect the device from direct
lightning strikes. All connections to the device must be made according to the respective country-specific
regulations.