7.6 Water Connections
All units have water-cooled housings to prevent overheating of the injection
unit. The EM3 and EM4 have water cooled servo motors. Figure 7-7 below
shows the water inlet and outlet manifolds on the support beam.
1
2
3
4
1. Feed block
2. Motors, injection
and barrel housings
3. Water return
4. Water supply
Figure 7-7 EM3 / EM4 water supply and return manifolds
Figure 7-8 EM3 / EM4 Servo motor cooling connections
Both inlet and outlet are 1/4NPT connections. If the 3/8NPT ports are used
then the 1/4NPT ports must be plugged.
Contact your local service representative for replacement parts.
Table 7-1 Cooling System Water Limits
Property
Limits
Flow rate
3 - 6 liters (102 - 202 oz) per minute
Maximum pressure
6 bar (87 PSI) at the motor inlet
Temperature
Minimum 5°C (41°F) above dew point or at ambient
to prevent condensation. Maximum 50°C (122°F)
7-6
E-Multi User Manual
SYSTEM SETUP
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