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1. Remove conveyor.
2. Remove front control compartment cover.
3. Disconnect wires from time/temp. display terminals 5 and 6.
4. Pull off black operating knob and remove hex mounting nut.
5. Reassemble in reverse order.
PROCEDURE FOR USE OF TIME/TEMP SIMULATOR
NOTE: For displays with Thermocouple, simulator will not work.
This is a test device used to check the Time/Temp. Display
Procedure for use:
1. Check incoming power to display at following terminals.
a) Terminal 1 to 3 should have approximately 12.5 to 15 VAC.
b) Terminal 2 to 1 should be 1/2 of the reading from 1 to 3.
c) Terminal 2 to 3 should also be 1/2 of the reading from 1 to 3.
2. Identify Display type:
a) Type 1 has 6 dip switches and display case is 5 1/8" wide (12.8cm).
b) Type 2 has 6 dip switches and display case is 5 5/8" wide (14 cm).
c) Type 3 has 10 dip switches.
3. Set Dip Switches as follows:
1 2 3 4 5 6 7 8 9 10
TYPE 1 OFF OFF OFF ON OFF
OFF
TYPE 2 OFF OFF OFF OFF OFF OFF
TYPE 3 OFF OFF OFF OFF OFF OFF OFF ON OFF ON
1. WITH POWER OFF: Remove all leads from T/T display except power input on 1,2 and 3. Install simulator to
terminals 4, 7, 9, 10.
NOTE: When on 50 Hz power dip switch number 2 must be on.
2. WITH POWER ON: Turn time and temperature adjustment pot. fully counter clockwise.
Display should read (wait 15 seconds after turning):
SPEED TEMPERATURE
TYPE 1 9:30 ± 10 SEC. 475° ± 10°F
TYPE 2 9:20 ± 10 SEC. HHH
TYPE 3 9:35 ± 10 SEC. 635° ± 10°F
1 Turn time and temperature pot. fully clockwise.
Display should read (wait 15 seconds after turning):
SPEED TEMPERATURE
TYPE 1 10:20 ± 10 SEC. 615° ± 10°F
TYPE 2 10:10 ± 10 SEC. 475° ± 10°F
TYPE 3 10:20 ± 10 SEC. 475° ± 10°F
1 For performance test, turn time pot. to 10:00 and temp. adjustment pot. to 540° ± 10°F.
1. Time reading on display of 10:00 should not fluctuate more than ± 5 seconds.
2. Temperature on display reading should not fluctuate.
SWITCH, ON/OFF
1. Shut off power at main breaker.
2. Remove conveyor.
3. Remove front control compartment cover.
4. Remove wires from switch and mark for reassembly.
5. Depress spring clips on the side of switch and push out.
6. Reinstall in reverse order.
Impinger II - 1100 Series Service Manual - International
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