Gis GCH1000 Series, Инструкция по эксплуатации, Страница: 17 / 22

G I S C H A I N H O I S T S W I S S Q U A L I T Y 17
NOTE
The brake has no air gap adjustment. If the air gap (a
max.
, table 3-3 and
figure 3-1) reaches maximal value, the brake pad needs changing.
Table 3-3 Air gap
GCH 250/500 GCH 1000 GCH 1600/2000/2500
Air gap (a) [mm]
0.4
0.15
0

0.5
0.2
0

0.5
0.2
0

Air gap (a
max.
) [mm] 0.7 0.9 0.9
Torque value [Nm] 3 10 10
Figure 3-1
3.2.4 Load chain
The load chain should be periodically checked for abrasion. The check is based upon
three measurements: see accepted wear factors (table 3-4) and measurement points
(figure 3-2).
CAUTION !
The chain should be replaced when the measurements exceed or fall short
of those defined in the table. The chain wheel and chain guide should be
checked for wear at the same time and, where necessary, be replaced. Only
use original chains. The chain links should not be welded.
The new chain is installed in accordance with chapter 2.2.2.
NOTE
For ease of installation, the old chain and new chain can be connected by a
piece of flexible wire.
Table 3-4 Wear factors load chain
GCH 250 GCH 500 GCH 1000 GCH 1600 GCH 2000/2500
Chain type d x t [mm] 4 x 12.3 5 x 15.3 7 x 22 9 x 27 10 x 28
Tolerances in accordance with: DIN 685, part 5
DIN EN 818-7
1. Measurement over 11 chain links; a = 11t
[mm] 138.0 171.6 246.8 302.9 314.2
2. Measurement over 1 chain link 1t [mm] 12.9 16.0 23.1 28.35 29.4
3. Measurement of the chain link diameter
dm =
2
d2 d1

; (dm min. = 0.9 x d)
[mm] 3.6 4.5 6.3 8.1 9.0
Figure 3-2
3.2.5 Limit stop assembly
3.2.6 Gearbox
3.2.7 Slip clutch
CAUTION !
A damaged buffer plate, underneath the housing, must be replaced.
Screw connections at the limit stop and shims or lower sheaves should be checked and,
where necessary, tightened to the right torque. For coefficient data see chapter 3.2.8.
The gearing has continual lubrication.
Lubricant........................ : Strub N1424
Can be mixed and is compatible with all other similar brand
name grease (DIN 51502: GP OM-20)
Lubricant quantity .......... : GCH 250/500 ................. : 0.4 kg
GCH 1000 ...................... : 1.0 kg
GCH 1600/2000/2500 .... : 1.8 kg
The slip clutch is set at 125% at the factory and can be relied on to prevent the chain
hoist from being overloaded (the force limiting factor according to DIN EN 14492-2 is
Φ
DAL
= 1.4). The coating is wear resistant.
CAUTION !
Adjustment and testing of the slip clutch may only be carried out by
authorized personnel and must be recorded in the log book.
d
d1
d2
t
a =
1
1t
b
a