Graco 257500 Manual De Usuario

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Kettle Temperature Control Calibration 
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Kettle Temperature Control Calibration
To Check Kettle Temperature Control Calibration:
1.
Move Thermolazer
 to an area with no wind.
2.
Turn temperature control to 400° F (204° C).
3.
Agitate material for 4 to 5 minutes.
4.
After control has reached steady state temperature 
and burners do not cycle more than once per min-
ute, insert remote calibrated temperature probe in 
material and directly adjacent kettle temperature 
control probe.
5.
Compare temperature of remote calibrated temper-
ature probe to temperature setting on temperature 
control. 
6.
If the temperature control setting is lower than the 
remote calibrated temperature setting on tempera-
ture probe, turn adjusting screw clockwise. Every 
1/4 in. turn will change temperature 35° F (19.4° C).
7.
If the temperature control setting is higher than the 
remote calibrated temperature probe, turn adjusting 
screw counterclockwise--every 1/4 in. turn will 
change temperature 35° F (19.4° C).
8.
Recheck calibration by turning temperature control 
to 410° F (210° C) and repeat steps 3-7.
Temperature Control Replacement
When replacing temperature control, keep in mind that 
the temperature probe is an integral part of the assem-
bly. Do not make any sharp bends in the capillary tubing. 
Bends should be 0.25 in. (0.64 cm) in radius or greater. 
Be sure to seal capillary tubing with high temperature 
mortar at kettle outlet.
Thermometer Replacement
Thermometer can not be removed from ThermoLazer
 
without damaging thermometer probe. If probe end is 
frozen in material, heat material and remove until mate-
rial level is lower than thermometer probe.
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