Labconco Rapid Digestors 23080 - Manual (Page 15)

SERVICE
16
• Reconnect main power supply.
Resistor Replacement
• Follow steps 1-5 under “Strip Heater Replacement”.
• Remove defective resistor from buss bar and terminal strip.
• Install new resistor, retighten screws and reassemble in reverse order.
• Reconnect main power supply.
Ceramic Heater Replacement
• Follow steps 1-5 under “Strip Heater Replacement”.
• Remove defective heater from heater containment pan.
• Install new heater by threading wires through hole in the bottom of the insulator
board. Feed wires through hole and lower heater in place.
• Reconnect heater wires and reassemble in reverse order.
• Reconnect main power supply.
Sensor Replacement
• Follow steps 1-5 under “Strip Heater Replacement”.
• Disconnect sensor leads attached to 2-pin connector located on left side of digestor.
(2-pin connector located on rear of Rapid Digestor 4-Place).
• Remove heater containing the sensor. (Refer to layout sketch on page 23 for 25-
Place or to page 27 for 4-Place). Heater-sensor assembly containing defective sensor
may be used as heater only by breaking sensor flush with bottom of heater.
• Install new heater sensor assembly by carefully threading wires through holes in the
bottom of the insulator board. Feed wires through holes and lower heater in place.
CAUTION: Do not bend wires or allow wires to fold up between bottom of heater
casing and insulator board. Heater life will be greatly reduced if heater is not
installed correctly.