9 Repair
NGW 300 / LGW 300 / GBW 300
904
Implementation: Aquavent 6000 S circulating pump
ATTENTION
When installing the Aquavent 6000 S circulating pump,
the following directions must be followed without fail.
Failure to so will exclude warranty claims.
HINWEIS
•
In contrast to the U 4851 circulating pump, the Aqua-
vent 6000 S must be integrated into the vertical instal-
lation position in such a way that the pump head is
above the motor.
•
The circulating pump is not self-priming. Due to this
lack of automatic ventilation,the pump must be instal-
led at the lowest point of the water circuit in com-
pliance with the permissible installation position
(see fig. 903).
•
The hoses must be laid without kinks and going up-
wards. Hose connections must be secured with hose
clamps to prevent them from slipping.
•
No solenoids or other shut-off valves which could be
closed during the operation of the pump, must be instal-
led on the water infeed side of the circulating pump.
The same applies to filters which can get clogged.
•
Before the circulating pump is put into operation the
vehicle’s cooling system and the pump body must be
ventilated.
•
InThere are no consumable parts installed in the cir-
culating pump. It is also possible to replace the motor
without dismantling the pump head.
ATTENTION
A dry run of the circulating pump of up to 45 mins. Is per-
missible. Flawless ventilation is detectable, if the pump is
working virtually silently.
0-90°
5°
0-85°
Permissible installation position
Aquavent 6000 S
Fig. 903 Aquavent 6000 S circulating pump
