Duke TSC-18, Maintenance Manual

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Maintenance Manual for DUKE TSC Proofer
Oven with Touch Screen Controls
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A Manually reset high temperature safety limit is provided
on the right side of the control section of the unit to protect
the oven elements. The high limit will not trip under normal
operating conditions. Should the oven high limit trip, push
the RESET button. The high limit will reset with a "click" if
an over temperature trip occurred. If condition persists, call
Duke Service.
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ProBleM Yes no
1. oven does not heat with oven
switch in the on position and oven
temperature not set at 0°.
a. Are oven indicator lights on? Observe Oven Fan. Go to “b”. Reset Hi-limit Switch
b. Does Oven Fan work? Call Duke Service. Check Proofer Operation. Go to “d”.
c. Is Oven Door Securely closed? Call Duke Service. Close Door securely. Go to “e”.
d. Is Supply Circuit Breaker tripped? Reset Circuit Breaker. Try oven again. Check Fuses on Control Box. Goto “e”.
Go to “e”.
e. Does oven work? Troubleshooting complete. Call Duke Service.
2. Proofer does not heat with Proofer
switch in the on position Proofer
a. Are Proofer indicator lights on? Observe Proofer Fan. Go to “b”. Check Oven Operation. Go to “c”.
b. Does Proofer Fan appear to work? Call Duke Service. Check Oven Operation. Go to “c”.
c. Does Proofer work? Call Duke Service. Check Supply Circuit Breaker. Go to “d”.
d. Is Supply Circuit Breaker tripped? Reset Circuit Breaker. Try Proofer again. Check Fuses on Control Panel. Go to “e”.
Go to “e”.
e. Does Proofer work? Troubleshooting complete. Call Duke Service.
3. oven/Proofer lights not working.
a. Is more than one light not working? Replace inoperative light bulbs and Check transformer. Go to “b”.
recheck. Go to “b”.
b. Do lights work? Troubleshooting complete. Call Duke Service.
4. Proofer humidity not working/
insufficient with Humidity Control
not set to off.
a. Does there appear to be a light fog Decrease humidity if too much moisture Increase humidity if not enough moisture on
on the Proofer door? on proofer door. Go to “b”. proofer door. Wait 15 minutes. Go to “b”.
b. Does Proofer Fan appear to work? Go to "c". Call Duke Service
c. Confirm water supply to unit is on. Go to "d". Turn water supply on. Go to "d".
d. Check for restrictions in water line. Troubleshooting complete. Call Duke Service.
(Kinks in water line, Clogged filter,
inlet strainer or mineral build-up on
sprayer nozzle)