Safety Instructions; General Information; System Components - Carl Stahl Kromer 7241 Instrucciones De Empleo

Operating Instructions
Characteristic values of the system
Ident. Number
7241 0800 01
7241 0800 02
7241 0800 03
7241 0800 04
7241 0800 05
7241 0800 06
7241 0800 07
Field of application
The zero gravity balancers of type 7241 are used for reliev-
ing – i.e. equalizing – the weight of hand-held tools (such as
welding tongs, hole gauges and micrometers, slaughter-
house equipment, etc.).

General information

The weight-balancing retraction force remains almost con-
stant across the entire extension length of the cable. The
load range of the zero gravity balancers depends on the
model, as indicated on the rating plate (1).

System components

(1) Rating plate
(2) Safety suspension
(3) Suspension clamping screw
(4) Safety chain
(5) Elastic cable stop buffer
(6) Cable clamp (of buffer assembly)
(7) Cable wedge (for cable length adjustment)
(8) Ferrule (for securing the free cable end)
(9) Endless screw (for load setting)
(10) Drum lock (for locking the cable drum)
34
Load Range (kg)
12.0 – 20.0
20.0 – 30.0
30.0 – 45.0
45.0 – 60.0
60.0 – 75.0
75.0 – 90.0
90.0 – 100.0
Zero gravity balancer, Type 7241
Dead Weight (kg)
14.80
15.20
16.90
17.30
18.70
19.70
20.90

Safety instructions

G No changes may be made on the zero gravity balancers
of type 7241 or their accessories without the express
written permission of the manufacturer.
G The safe use of these products is only ensured if you
have fully read these operating and safety instructions
and strictly observe them during work.
G The balancer may only be operated, installed, serviced
and repaired by fully qualified personnel. These persons
must have been informed about the potential risks asso-
ciated with performing these tasks.
G Hook or unhook the load only when the cable is fully
retracted.
G The fixture(s) on which the zero-weight balancer and the
safety chain are installed must be sufficiently stable!
G The balancer's cable must be checked for potential
damage at regular intervals – at least once a year – by a
competent person (as required by DIN 15020, Part 2).
Never use a balancer when the cable is defective!
G Never stand under a suspended load!
G The suspension (complying with DIN 15405, Part 1), the
anti-crash safety device and the safety chain must be
monitored continuously. If damage or wear is detected,
withdraw the balancer from service at once.
G Please note that the cable can easily get displaced from
its coupling if it is moved backwards, or snaps back, in
no-load condition during installation. An incorrectly
anchored cable can slip out under load and cause bodily
injuries or other damage due to the load crashing down!
G Except for cable replacement (see Replacing the cable),
the spring tension must be fully released before perfor-
ming any service or repair work. Disassembling the
spring housing is extremely dangerous and therefore
strictly forbidden.
G It is strictly forbidden to operate the zero gravity balancer
without the safety components supplied (safety chain,
spring fracture safeguard, etc.).
G A safety chain strained by a falling balancer must be
replaced at once, together with the balancer's housing.
Cable Extension/
working range (m)
2.0
2.0
2.0
2.0
2.0
2.0
2.0