GILGEN BF-760 Instructions De Montage Et D'exploitation page 15

Proceed as follows to operate the leaf manually (Fig. 26):
- Open the release device access door.
- Insert the release key in the lock.
- Turn the key at least one full turn in the direction of the arrow.
To re-lock the operator, turn the key in the opposite direction as far
as it will go.
Note:
The key can only be removed when in vertical
position.
7 Maintenance
Maintenance must be carried out by adequately trained specialists
according to the enclosed service check list 4.06.09.051.4.
7.1 Checking the oil level
Check the oil level at regular intervals. It must be kept just below
the filler plug hole (Fig. 27).
For low-to-medium duty cycles, you need only check the level once
every 4 years. With heavy duty cycles, check every two years
instead.
Attention:
Top up only with hydraulic oil XD 220.
7.2 Bleeding
Note:
The BF-760 drive unit has all the air bled from its
hydraulic system before delivery. No bleeding is
therefore required on initial installation.
Bleeding is only necessary if work has been done on the hydraulic
system.
Air in the hydraulic system causes irregular movement of the leaf
and noisy operation.
Proceed as follows to bleed air from the system:
- Give an open signal to the gate.
- While the gate is opening, remove the access cover and slacken
off the opening bleed screw (ref. C, Fig. 20) as shown in Fig. 28.
- Wait until only clear, bubble-free oil flows out.
- Tighten the bleed screw again before the operator reaches the
end of the opening cycle.
- Give a closing signal to the gate.
- While the gate is closing, remove the access cover and slacken
off the closing bleed screw (D; Fig. 20) as shown in Fig. 28.
- Wait until only clear, bubble-free oil flows out.
4680-999-02_04.97.p65
E
- Tighten the bleed screw again before the operator reaches the
end of the closing cycle. Repeat the above operations a few
times on both bleed screws.
- Check the oil level and top it up to just below the filler hole (Fig.
27).
Attention:
Top up only with hydraulic oil XD 220.
Appendix:
Maintenance for industrial doors ........................... 4.06.09.051.4
4680-999/02
BF-760
14-22