8. Technical Information for the Versions
Fundamentals for the following information
are our internally gathered experience,
based on 94/9/EC ATEX guidelines. For chain hoists in areas 1 and 21, the technical
construction documents are registered at the stated office (TÜV no. 0123).
In
the “HIGH” version, load chains are used with NIROSTA special load chain
fabrication steel, which causes a reduction in the load-bearing capacity of the series
chain hoists.
The table below gives you the varying load-
bearing capacities in the “HIGH” version
compared to the “BASIC” and “MEDIUM” versions.
The hoists themselves are in the “HIGH” version, but already indicated with lower
load-bearing capacity on their nameplates.
Load-bearing
capacity in version
BASIC//MEDIUM
in kg
Type
PREMIUM
PRO
Chain
diameter
in mm
Number
Load lines
Reduced load-bearing
cap.
of HIGH version
in kg
750
1
0,7
5 Ex
5,6
x 1
7
1
450
.500
1
.5 Ex
7,1
x
21
1
1,200
3.000
3
.0 Ex
9
x
27
1
1,600
5.000
5
.
0
Ex
1
3
x
36
1
3,300
6.000
6
.0 Ex
9
x 2
7
2
3,200
9.000
9
.0 Ex
9
x 2
7
3
4,800
BASIC version is appropriate for use in Ex II 3 GD c IIB T3 200°C (Zone 2) :
- fast-moving parts and contact parts treated with special coatings
- Load and hand chains galvanised
- Trolley with cellulose buffer
MEDIUM version is appropriate for use in Ex II 2 GD c IIB T3 200°C (Zone 1) :
- fast-moving parts and contact parts treated with special coatings
- Carrying and load hooks treated with special coating
- Load and hand chains galvanised
- Trolley with cellulose buffer
HIGH version is appropriate for use in Ex II 2 GD c IIC T3 200°C (Zone 1) :
- fast-moving parts and contact parts treated with special coatings
- Carrying and load hooks treated with special coating
- Load and hand chains in NIROSTA
- Trolley with cellulose buffer
- Wheels made of bronze
