Multiva Optima T Series, Operation And Maintenance Manual, Page: 11 / 41

7
3. COMMISSIONING AND BASIC ADJUSTMENTS
3.1. Measures before commissioning
The sections of the harrow requiring lubrication have been lubricated at the factory and oil has been
driven to the cylinders during test runs. Still, it is recommended to review the lubrication points before
the first period of usage. Lubrication points are described in section 7 MAINTENACE
PROGRAMME,
LUBRICATION.
3.2. Hitching to tractor
Attach the towing eye of the harrow's drawbar to the hydraulic tow hitch of the tractor. Note the safety
distance. Ensure that the hitch of the tractor locks on and that the hitch is not supported by the lifting
device.
Remember that pressurised hoses should never be handled and the hydraulics should be depressurised
before handling.
Hydraulic hoses are marked with colourful collars. Hoses are connected to dual purpose outputs.
Optima T500 - T700
:
The tractor must have 2 dual purpose hydraulic outputs.
The selector valve of the harrow directs the oil to the levelling board cylinders or the opening/closing
cylinders of the side sections depending on the height setting of the harrow. The operation of the
selector valve is described in section 3.4
Optima T800 - T1500
The tractor must have 3 dual purpose hydraulic outputs.
NB! All models: Ensure that the dual purpose valve used for height adjustment is actually set to
function as dual purpose and that the float position of the valve is not activated. If the float position
remains activated during height adjustment, this may result in the changing of the harrow's working
depth between sections during tillage!
NB! Optima T800 - T1000 : The raising cylinders of side sections must be connected to a hydraulic
output with a float position. The float position of the side section's raising cylinders must always be
activated during tillage. The float position allows the oil to flow freely in both hoses.
Adjust the pulling arms of the tractor to a height at which they do not become in contact with the
drawbar or hydraulic hoses during turning. When you unhitch the harrow from the tractor, remember to
also disconnect the hydraulic connectors.
Action Marking the hose
Working depth - down 1 x red
Working depth - up 2 x red
Levelling board up / open side sections 1 x black
Levelling board down / close side sections 2 x black
Action Marking the hose
Working depth - down 1 x red
Working depth - up 2 x red
Close side sections 1 x black
Open side sections 2 x black
Levelling board down 1 x blue
Levelling board up 2 x blue