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Routine maintenance
Replace the balance mechanism digital display battery yearly.
During use, check the following:
Check the effectiveness of the pan and tilt brakes. Reset as necessary.
Check the operation of the balance mechanism digital display and the illumination of the
level bubble and drag knobs. Replace battery if necessary.
No further routine maintenance is required.
Cleaning
During indoor use, the only cleaning required should be a regular wipe over with a lint-free cloth.
Dirt accumulated during storage may be removed using a semi-stiff brush. Particular attention
should be paid to the levelling bowl and mounting face of the head and to the space between the
tilting assembly and the base.
All Vision heads are weatherproof. However, use out-of-doors under adverse conditions will re-
quire special attention. Salt spray should be washed off with fresh water at the earliest opportunity.
Sand and dirt acts as an abrasive and should be removed using a semi-stiff brush or vacuum
cleaner.
NOTE:
Use only detergent-based cleaners. DO NOT use solvent- or oil-based cleaners,
abrasives or wire brushes to remove accumulations of dirt, as these damage
the protective surfaces.
Battery replacement
The battery powers the balance mechanism digital display and illuminates the level bubble and
the drag knob scales. All are operated simultaneously by pressing the switch
for approximately 15 seconds.
The battery should be replaced yearly or whenever the illumination is considered inade-
quate.
NOTE:
The illumination level of the digital display and the level bubble and the drag
knob scales varies with the intensity of the ambient light. If the ambient light
level is high, the level bubble and drag knob scales will not be lit.
Removal of the battery will not affect the calibration of the balance mechanism
display.
Prise out the battery cover (16).
Pull the battery
Pull the connector
of the new battery (16.2).
Servicing
(16.2)
out of the battery compartment as far as the wiring will allow.
(16.1)
off the terminals of the old battery and push it onto the terminals
(9)
and remain active
14
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