Graco Therm-O-Flow 55-H, Instructions-Parts List Manual

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27 310–534
Operation
Temperature Out of Range
Should any of the temperatures go out of the preset
range for any of the zones, power to the heated
components is interrupted, and the HIGH
TEMPERATURE ALARM light goes ON. The alarm
automatically goes OFF and the system resets when
the temperature is back in range.
Resetting the Supply Unit After the Inactivity Timer
(Worklife Timer) Has Been Triggered
Your system may have an inactivity timer. If the pump
has not moved for a set amount of time, the inactivity
timer:
D
turns off power to the heaters
D
lights the AUTO HEAT OFF light
For information about setting the time period on the
inactivity timer, see the documentation that came
inside the control panel.
To re-heat the supply unit:
Fig. 14
8
1. Turn the HEAT switch (8) to the OFF position, then
turn it to the ON position.
2. Turn off pump air
3. Open the dispense valve over a waste container to
allow the material to expand. This will prevent
damage to the equipment.
4. Wait until all components in the supply unit have
returned to operating temperature.
5. Close dispense valves.
6. Turn on pump air.
7. Resume operation.
Resetting the Ground Fault Interrupt
This control panel is equipped with a ground fault
interrupt (GFI) circuit breaker (Fig 15). If the discon-
nect switch is ON, but all lights on the electrical control
panel are off, have a qualified electrician check the
ground fault interrupt.
WARNING
ELECTROCUTION HAZARD
To reduce risk of injury or damage to
equipment, perform this procedure with
the main disconnect OFF.
To reset the ground fault interrupt, have a qualified
electrician:
1. Turn OFF the electrical disconnect on the electrical
control panel.
2. Open the electrical control box and locate the
Ground Fault Interrupt switch (14). The ground
fault interrupt will be in a “neutral” position, be-
tween the ON and OFF positions.
3. Move the ground fault interrupt switch to the OFF
position, then move it to the ON position.
4. Close the door and turn ON the disconnect switch.
For more information about the ground fault interrupt
switch, see the documentation that came with the
electrical control panel.
Fig. 15
“ON”
position
shown
14