Pace DUAL THERMOPIK DTP-80 Operation & Maintenance Manual page 21

CHECKOUT
S Y M P T
P R O C E D U R E
No heat on Check resistance - Pin 3 to Pin 6.
either Resistance should be 110 ohms.
heater. If circuit reads open - -
Check resistance - Pin 2 to Pin 5.
Resistance should be 6 ohms.
If circuit reads open - -
Handpiece Check resistance - Pin 3 to Pin 6.
overheating. Resistance should be 110 ohms.
If circuit reads less than 105 ohms
- -
Heat on Check resistance - Pin 2 to Pin 5.
only 1 If resistance equals 12 ohms - -
heater.
Fuse blows Check resistance - Pin 4 to Pin 5
when unit is and Pin 4 to Pin 2.
turned on. Circuit should read open. If not - -
Table II. Heater Assembly Checkout Procedures
CAU S O L U T I O N
Open Replace Heater
Sensor Assembly "A".
Open Replace both Heater
Heater Assemblies.
Shorte Replace Heater Assembly
Sensor "A".
Open Replace cold Heater
Heater Assembly.
Shorte Remove handpiece side
Heater cover "B".
wire connections to Heater
"B". Check resistance
again. If circuit reads
open, replace Heater "B".
Disconnect
21