Maintenance; Ram; Ground Fault Interrupt; Power In A Tandem System - Graco Therm-O-Flow 20 EasyKey Instructions Manual

Maintenance

Ram

Periodically (at least once a month), inspect the ram
guide sleeves, rods and cylinders for wear or damage.

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.
Resetting the Ground Fault
Interrupt
This electrical control panel is equipped with a ground
fault interrupt (GFPE) circuit breaker. If the disconnect
switch is ON, but all lights on the electrical control panel
are off, review troubleshooting procedures.
312094K

Alarm Troubleshooting

The Therm-O-Flow alarms alert you to a problem and
help prevent system shut downs or application errors. If
an alarm occurs, operation may stop and the following
occurs.
• Light Tower Changes (if equipped)
• Status bar on the EasyKey Display shows the
description
• Alarm out puts a signal sent to I/O
To Clear the alarm and restart the unit, press the Error
Clear key on the EasyKey display.
See Table 8, page 34.
Maintenance
33