en
• Check the wall brackets
• Oil moving parts, especially the sliding brackets
• Check all electrical connections to the control box
• Check the chain wheel
• Oil the chain
• Put the unit cover back again and tighten the retaining screws. Reconnect
mains.
20
1
4
2
2
5
3
1
and tighten if necessary.
4
for wear.
5
.
Lift off the top cover.
2
2
2
.
3
.