Graco EnDure Instruction Manual page 15

Service
Prepare to Service Automatic Dispense
Valve
If the unit is hot, determine whether or not you can
service the unit after it has cooled down. Some
materials, like polyurethanes, may cure permanently
when cooled and exposed to air, preventing you from
disassembling the dispense valve. If you are working
with such a material, service the unit while the material
is at a temperature where the material is soft enough to
work with. If the material can be reheated at a later time,
you can service the unit after it has cooled, reheating
the material as necessary.
Perform this procedure before servicing the automatic
dispense valve.
1. Relieve the system pressure.
WARNING
To reduce the risk of serious injury, whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 14).
2. Make sure material flow has been shut off.
3. Make sure system air has been shut off.
309376L
4. Remove power from the automatic dispense valve.
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment will be hot!
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when servicing this dispensing system
component.
5. If the material in the dispense valve can be
reheated, wait for the dispense valve to cool
thoroughly before servicing it.
If the material in the dispense valve cures
permanently when cooled and/or exposed to air,
service the unit while the material is at a
temperature where the material is soft enough to
work with.
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