MTZ 1220.1, Operator'S Manual

Page: 31 / 244

MTZ 1220.1/1220.3 Section D . Operation controls and instruments
D11
Also, when the “Parameter” button is pressed in the programming
mode, the list of programmed parameters contains an independent
“T” parameter of precise readout of the astronomic service hours
of the engine. This parameter cannot be modified, it is the precise
number (to 1/10 of an hour) of engine service hours.
Attention!
1. During operation, it is allowed to modify the value of the parameters
- “wheel rolling radius R” which is determined based on the tires installed on the trac-
tor by measuring the distance from the wheel center to the reference surface.
2. You mustn’t modify the entered values of all other parameters!
When the instrument scale illumination is on (position II “Instrument panel illumina-
tion, parking lights ON” and position III “Consumers of the position II, front headlights,
and parking lights ON”) the brightness of the MD screen of the PTO indicator segments
is automatically reduced.
IMPORTANT! Upon each connection to a power supply In II check of point indicators
and PTO shaft indicator scale segments functions is carried out. At this time the poin-
ters deviate from start marks and appear to come over the first digitized scale marks
(over “5” for speed and over “10” for rpm), and all PTO scale’s segments and sym-
bols “540’ and “000” .
Windscreen washer switch (1)
When the key (1) is pressed the
windscreen washer is turned on.
Cab fan and heater switch (2)
After pressing button (2) a fan of cab
heating and ventilating system is on.
Switch has 3 positions:
1 – “Switched off” (top of the button is sunk
as much as possible);
2 – “Mode of light air feed is engaged”,
3 – “Mode of coarse air feed is engaged”.
Rear working lights switch (3)
After pressing button (3) rear working
lights and indicator light, built-in the but-
ton are on.
Front working lights switch (4)
After pressing button (4) front working
lights and indicator light, built-in the but-
ton are on.
Road-train sign lighting switch (5)
After pressing button (5) three orange
lamps, installed on the front part of a cab
roof and indicator light, built-in the button,
are on.
Radio switch (if any)
1. – Volume of sound switching on/off;
2. – Radio tuning
Note: Radio can only be switched on in
positions I or III of the starter switch key.