Adding Coolant - Generac Power Systems MIH800 Owner's Manual

Maintenance
IMPORTANT NOTE: Do not overfill oil pan. Overfilling
may result in white exhaust smoke, sudden over
engine speed, or engine damage.

Adding Coolant

DANGER
Risk of poisoning. Do not use mouth to siphon
coolant. Doing so will result in death or serious
injury.
WARNING
Risk of burns. Contents under pressure.
Do not remove the radiator pressure cap
while engine is hot. Doing so could result
in death or serious injury.
WARNING
Risk of burns. Do not open coolant system
until engine has completely cooled. Doing so
could result in serious injury.
CAUTION
Risk of overheating. Do not use any chromate base
rust inhibitor with propylene glycol base antifreeze,
boosters, or additives. Doing so will cause overheating
and possible equipment damage.
CAUTION
Personal injury. Wear appropriate personal protective
equipment at all times while operating and servicing
unit. Failure to do so could result in personal injury.
Coolant must be changed every year or at 1,000 hours of
operation. Check coolant level and degree of fouling
according to the steps below. Correct coolant level is
approximately 0.39 in (10 mm) below the radiator core
top. Wear proper PPE when handling Long Life Coolant.
1. Verify engine is stopped and cooled.
Figure 4-2.
2. See Verify coolant drain plug (A) is
closed.
20
(000149)
3. See
(000322a)
(000154)
4. Fill radiator slowly with coolant until it reaches the
lip of the filler port.
(000165a)
5. Replace radiator cap.
6. Remove cap (C) from sub-tank.
7. Fill sub-tank with coolant until it reaches the FULL
mark.
8. Replace sub-tank cap.
9. Operate engine approximately five minutes at a
(000419)
low idle speed to purge air in the coolant system.
NOTE: Coolant level will drop.
10. Stop engine and, once cooled, replenish with cool-
ant until the sub-tank reaches the FULL mark.
Figure 4-2. Coolant Drain Plug
Figure 4-3. Remove radiator cap (B).
Figure 4-3. Radiator Location
Owner's Manual for Indirect Fired Heater
A
008970
C
B
008964