Service; Ram; Pump; Ground Fault Interrupt - Graco Therm-O-Flow 20 EasyKey Instructions Manual

Service

Service

Ram

Whenever you service the ram, follow the Ram Pres-
sure Relief Procedure on page 28.
Periodically (once a month), inspect the ram guide
sleeves, rods and cylinders for wear or damage, replace
all worn parts. See the Service section of Form 310525
for instructions on replacing worn parts.

Pump

See the material pump instructions for its inspection fre-
quency.

Ground Fault interrupt

Periodically (at least once a month) test the ground fault
interrupt switch by pushing the TEST button.

Power in a Tandem System

In a Tandem System, the secondary unloader pro-
vides 24VDC power to the EasyKey display. This
allows the primary unloader to be powered down
for maintenance without interrupting production. All
accessories (light tower, swirl, etc.) and the display
board on the primary system will have power when
the secondary unloader is powered on and the pri-
mary unloader is powered off.
38

Platen Service

Raise the platen up out of the pail before proceed-
ing. See Pail Changing on page 29.
Removing the Platen
1. Turn OFF the main electrical disconnect.
2. Disconnect the platen power wires and the platen
ground wire from within the main control panel and
pull out of conduit.
3. Remove the platen assembly from the ram.
4. Reverse this procedure to reinstall the new or rebuilt
platen assembly.
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