e.Press to display actual tempera- tures.

Do not turn on hose heat without fluid in hoses.

f. Turn on heat zone by pressing

. Preheat hose (15-60 min). Indi-

cator will flash very slowly when fluid

reaches target temperature. Display shows actual fluid temperature in hose

near FTS.

Thermal expansion can cause overpressur- ization, resulting in equipment rupture and serious injury, including fluid injection. Do not pressurize system when preheating hose.

g. Turn on A and B heat zones by

pressing for each zone.

h.Hold to view electrical currents for each zone.

i.Hold to view heater control circuit board temperature.

Startup

j.Manual current control mode only:

When in manual current control mode, moni- tor hose temperature with thermometer. Install per instructions below. Thermometer reading must not exceed 160°F (71°C). Never leave machine unattended when in manual current control mode.

If FTS is disconnected or display shows diagnostic code E04, turn main power

switch OFF

then ON

to

clear diagnostic code and enter manual

current control mode. display will

show current to hose. Current is not lim- ited by target temperature.

Press or to adjust current setting.

To prevent overheating, install hose thermometer close to gun end, within operator view. Insert thermometer through foam cover of A component hose so stem is next to inner tube. Thermometer reading will be about 20°F less than actual fluid temperature.

If thermometer reading exceeds 160°F

(71°C), reduce current with key.

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Graco H25, H50, H40 important safety instructions Manual current control mode only