Maintenance
5-7
P/N 7135268B
E 2008 Nordson Corporation
PURBlue EC
Pump
Checking for Leakage
The pump is equipped with a self-sealing pump shaft seal. Material may
seep out of the seal at irregular intervals. The gland must then be tightened.
NOTE: When the pump shaft seal needs to be replaced, Nordson
recommends replacing the pump and sending the old one in to be repaired.
Only trained personnel can replace the pump shaft seal.
Tightening Gland
NOTE: Tighten only when melter is warm.
Tighten the gland approx. ¼ of a revolution in the operating direction of the
pump. If tightening is no longer possible, the pump must be replaced.
Fig. 5-3
Tightening Fixing Screws
Normal heat cycling (heating and cooling) can cause the fixing screws to
become loose.
NOTE: Tighten fixing screws only using a torque wrench (25 Nm / 220 Ibin)
and when the melter is cold.
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