Mosa RENTAL Use And Maintenance Manual page 21

COOLING LIQUID
A mixture of 50% demineralized water and 50% low silicate
ethylene glycol based coolant liquid must be used.
Use a coolant free of: silicates, phosphates, borates, nitrites
and amines.
The following ethylene-glycol based engine coolant may be
used:
- OAT (Organic Acid Technology) Low Silicate: ASTM D-3306
D-6210
- HOAT (Hybrid Organic Acid Technology) Low Silicate: ASTM
D-3306 D-6210
Important
Do not mix OAT and HOAT based coolant.
Never use automotive-type coolants. These coolants do not con-
tain the correct additives to protect heavy – duty diesel engines.
OAT coolants are maintenance free up to 6 years or 6000hrs of
operation , provided that the cooling system is topped up using
the same type of coolant. Do not mix different coolant types. Test
the coolant condition annually with coolant test strips.
HOAT are not all maintenance free and it is recommended to
have SCA (Supplemental Coolant Additives) added at the first
maintenance interval.
ATTENTION
The engine cooling system is originally filled with OAT coolant
: ENI ANTIFREEZE SPEZIAL
During the engine life it is strongly recommended to use the
same coolant type. This is because a coolant change would
require a careful cleaning of the cooling system, which is not
an easy job. A lack in tacking these precautions would result in
the mix of different additives used in different coolants which
would originate gelatinous substances capable of obstructing
the cooling system
Refuelling
1. Remove the tap and pour the liquid coolant into the radiator
2. Top liquid up until the pipes inside the radiator are covered
by about 5 mm.
3. Do not overfill the radiator, but leave room for the coolant
to expand.
4. For engines equipped with expansion tank, pour in fluid until
reaching the max level mark.
5. Replace the tap, ensuring it is perfectly closed.
After refilling operations, allow the engine to run for a brief time
and check the level, as it may have diminished due to air bubbles
present in the cooling circuit; restore the level with water.
ATTENTION
Do not remove the radiator tap with the motor in operation or
still hot, as the liquid coolant may spurt out and cause serious
burns. Remove the tap very carefully.
AIR FILTER
Check that the dry air filter is correctly installed and that there
are no leaks around the filter which could lead to infiltrations of
non-filtered air to the inside of the motor.
ELECTRICAL CONNECTIONS
ATTENTION
A qualified electrician should carry out electrical connec-
tions according to the norms in force.
The electrical connection to the User system is a very important
operation: safety and good operation of the genset and
User system depend on a correct electrical connection.
Before supplying User system always check:
• that wires connecting gen-set to the user plant are suitable
to the supplied voltage and are in accordance to the appli-
cable rules;
• wire type, section and length have been calculated conside-
ring environment conditions and in force norms;
• ground is functioning correctly: earth fault relay device works
only if this connection is operating;
• that direction of the phases corresponds to the user plant
phase rotation, and none of the phases has been accidentally
connected to neutral.
!
SET-UP FOR OPERATION
(DIESEL ENGINE)
WATER COOLED SYSTEMS
M
20.1
!