USER'S AND
MAINTENANCE
MANUAL
Date:
01/31/2020
Code
MAN D185T4F-DB
ENG
Air Compressor : D185T4F-DB
Revision 03
Copyright © 2014, ROTAIR S.P.A. - All rights reserved
.
This manual is intellectual property of ROTAIR S.P.A.
Its full or partial reproduction is forbidden under any form, on any support and by any means, without the
written authorization by ROTAIR S.P.A.
Page
50/59
13.4
-
4
CLEAN
ING
THE RADIATOR COOLER
The coolants of the compressor and the engine are cooled by a radiator which, consequently, must be kept
clean so that the ventilation air can pass freely and easily through its fins. Radiator fins clogged with dust or
any other debris will lead to harmful and dangerous overheating of the mechanical screw compressor, greatly
jeopardizing the operation and durability of the machine. We recommend that you check the radiator fins
periodically and, if necessary, clean them with compressed air or a jet of water under pressure.
13.4
-
5
PERCENTAGE/MIXTURE OF COOLANT
To determine the proper amount of antifreeze to be mixed within the the radiator
(Figure 13.4-3)
,
follow the
mixture amounts in table below:
*Coolant recommendation: ROLOIL ROL-ICE BLU
Figure 13.4-3 Checking the coolant radiator
WARNING
:
The radiator cap (Figure 10.1-3) must never be removed on a warm or hot
engine. Doing this would cause hot coolant under pressure to exit the
radiator and cause severe burns to the person(s) in the area. Refilling/
filling the system must be done with a cold engine and a mixture of water
and antifreeze in the correct percentages to allow for proper cooling and
protection in cold climates.
T (°C / °F)
Total volume of
the cooling plant
Water
volume
Antifreeze
volume
Antifreeze
percentage*
(°C / °F)
(lt , gal)
(lt, gal)
(lt, gal)
%
- 10 / 14
7, 1.84
5.25, 1.40
1.75, .5
25%
- 15 / 5
7, 1.84
4.5, 1.20
2.50, .7
35%
- 20 / -4
7, 1.84
3.8, 1.00
3.2, .85
45%
