Carl Stahl Kromer 7230 0000 01 Instrucciones De Empleo página 34

Operating Instructions
Equipment Characteristic Values
Ident. Number Dead Weight (kg)
without detent
7230 0000 01 2,90
7230 0000 02 3,10
7230 0000 03 3,20
7230 0000 04 3,40
7230 0000 05 3,60
7230 0000 06 3,80
Field of application
The type 7230 and 7231 zero gravity balancers are used for
relieving the weight of hand-held tools such as drills, thread
cutters, screwers, and for relieving the weight of feed lines
such as cables and hoses.
General
Using the type 7230 and 7231 zero gravity balancers makes
using hand-operated tools much easier. The retraction for-
ces remain nearly constant over the whole cable extension
length.
The zero gravity balancer load range differs depending on
the design, as per the nameplate (1).
Equipment elements
(1) Nameplate
(2) Safety hook
(3) Anti-fall arrangement
(4) Safety chain
(5) Elastic cable stop buffer
(6) Cable stop buffer cable clamp
(7) Cable stop for setting the cable length
(8) Ferrule for securing the free cable end
(9) Endless screw for setting the load
(10) Drum lock for locking the cable drum
Safety instructions
● Any changes to the 7230 and 7231 and the accessories
may only be carried out with the express written permis-
sion of the manufacturing company.
● Safe working with the equipment is only possible if the
operating instructions and safety instructions are read
fully and the information contained in them strictly obser-
ved.
● The zero gravity balancer is only to be operated, instal-
led, serviced and maintained by trained and instructed
personnel. The personnel must have been informed
about the possible risks arising during these tasks.
34
Zero Gravity Balancer, Type 7230, 7231
Ident. Number Dead Weight (kg)
with detent
7231 0000 01 3,10
7231 0000 02 3,30
7231 0000 03 3,40
7231 0000 04 3,60
7231 0000 05 3,80
7231 0000 06 4,00
● Dismantling the spring housing is extremely dangerous
and is strictly forbidden.
● Only unhook a load when the cable is f f u u l l l l y y retracted.
● The zero gravity balancer cable is to be checked for
damage periodically. A damaged cable on the zero gravi-
ty balancer may no longer be operated.
● The suspension, the anti-fall arrangement and safety
chain are to be monitored continuously. If damage or
wear is detected, the zero gravity balancer must be
exchanged without delay.
● Note that snapping back of the cable in a no-load condi-
tion is very dangerous to people, and will also destroy the
spring. The maximum load stated on the nameplate (1)
must not be exceeded.
● The spring must be fully released during maintenance
work – except during cable changing (see "Exchanging
the spring").
Installation/Commissioning
Before setting up the zero gravity balancer, ensure that the
appliance to which the zero gravity balancer is to be atta-
ched has adequate stability.
If electrode holders are to be operated with the zero gravity
balancer, the zero gravity balancer is to be suspended insu-
lated because of leakage currents (VDE 0100 § 19 and VDE
0545).
Designs with plastic housings must not be placed in the
immediate vicinity of hot-air blowers.
Installation
The zero gravity balancer is fitted with an anti-fall arrange-
ment (3), to prevent any possible falling down of the zero
gravity balancer (as per DIN 15112). In addition, the sup-
plied safety chain (4) must be secured stationary indepen-
dently of the zero gravity balancer suspension. In this
connection, the possible fall distance must be a maximum
of 100 mm. In this connection, please ensure the necessary
stability of the fixed installation. To guarantee perfect ope-
ration, this additional safety device must not hinder the
mobility of the zero gravity balancer in the work area. The
zero gravity balancer must be free to move so as to be able
to swing in the direction of the cable pull.
A safety chain loaded by a dropped zero gravity balancer
must be exchanged without delay, and the housing repla-
ced with it.
Load Range (kg) Cable Extension (m)
3,0 – 5,0 2,0
4,5 – 7,0 2,0
6,0 – 10,0 2,0
9,0 – 14,0 2,0
13,0 – 17,0 2,0
16,0 – 21,0 2,0