MAINTENANCE:
CHECKING, MAINTENANCE, CLEANING
OBJECTIVE
of maintenance is to maintain the smooth mobility, load capacity and safety of the stand over a longer period of time. This is achieved by:
a. careful handling,
b. removing dirt, moisture, corrosion,
c. replacement or repair of defective parts - without any special knowledge
MAINTENANCE STAFF
According to DGUV (German general public accident insurance) standards 315-390 (former BGG/GUV-912 chap. 4 Qualifications)
maintenance personnel should have at least the qualification of an instructed person.
This person can: - detect external damage and wear, - carry out visual and functional checks,
This person can :
- recognize safe operating condition and the functionality of the protective devices.
MEASURES
- Perform a visual inspection before and again after use. Is the stand:
-
- functional (workable, not worn out, vertical standing, screws and locking bolts are intact),
-
- complete (clamping handles, parquet protectors, rivets):
-
- as far as visible undamaged (deformed tubes and struts, chipped off clamps, worn out rivets)
-
Damaged stands must not be used or only after a qualified repair.
- Loose components (e.g. parquet protectors, clamping screws) can be replaced on site.
-
Repairs or the replacement of inseparably connected parts (tubes, clamps, rivets, struts)
-
must be carried out by qualified local personnel or at the manufacturer's premises (K&M).
- Care and maintenance work must always be carried out in an unloaded condition
- Possible hazards during maintenance work are crushing when folding the tubes.
-
In order to avoid this, it is necessary to handle them with care.
-
Use protective gloves if necessary.
- Use a slightly damp cloth and a non-abrasive cleaning agent for cleaning
- Other measures such as periodic lubrication, etc. are not necessary.
FAULT-FINDING (F) and REPAIR (R)
F: Stand wobbles or is crooked:
F:
R: If the floor is not suitable (unstable, uneven), restore or change location
F:
R: If necessary, compensate sloping ground by using leveling leg 21445
F:
R: Replace missing or damaged parquet protectors with original parts
F:
R: Pull feet apart as far as possible (= horizontal struts *3)
F:
R: Reduce eccentric load effectively
F:
R: Stop negative external influences (wind, vibrations)
F:
R:
or compensate them by additional measures (rope stretching)
F: Extension tube wobbles or retracts under load
F:
R: Ensure that the locking bolt *10 is engaged
F:
R: Tighten the clamping screws *4, 13
SUPPLEMENTAL SHEET
to instruction manual
21472-000-55 Speaker stand XL
COMPLETE VERSION of the relevant instruction summary
