Ingersoll Rand G330 Guía De Usuario Y Mantenimiento Manual página 90

Maintenance
30
Coolant. Checking and topping up
WARNING! Except in an emergency, do not
open the engine coolant system filler cap when
the engine is still hot. Steam or hot coolant may
spray out.
Check the coolant level daily before starting. Top up
coolant if necessary. Fill to 5 cm below the filler cap
sealing surface or between the MIN and MAX mark-
ings if a separate expansion tank is installed.
IMPORTANT! When topping up, use the same
coolant mixture as is already in the cooling
system.
Filling an empty system
Check that all the drain cocks are closed. Opening
the bleed cock(s). 4–7 litre engines are self-airing.
Therefore they have no bleed cock.
The locations of the drain and bleed cocks are
displayed on the next page.
The engine must be stopped when filling. Fill slowly
so that air is able to stream out through the bleed
cock(s) and the filler opening.
If a heater system is connected to the engine's cool-
ing system, the heater control valve must be opened
and the unit vented during filling.
Fill with coolant to the correct level. The engine
must not be started until the system has been
vented and completely filled.
Start the engine and run it until the thermostat opens
(this takes approximately 20 minutes). After start,
open any bleed cocks briefly. This releases any
trapped air. Check the coolant level and top up if
necessary.