Quantcast Table 4-1. Oven Troubleshooting Chart

 

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Figure 4-15. Measuring AC Voltage.
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TM-5-6640-214-14 Petroleum Base Laboratory Assembly NSN
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Heater bank
TM 5-6640-214-14
Table 4-1. Oven Troubleshooting Chart
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. HEAT LOSS
Step 1. Check for a faulty door gasket.
If defective, replace gasket.
Step 2. Check for improperly positioned door strike.
Adjust door strike for tighter closure.
2. TEMPERATURE VARIES (VENT CLOSED)
Step 1. Check for an improperly loaded oven.
Test oven empty.
Step 2. Check to see if hot oven is stabilized.
Allow 1 to 2 hours for oven to stabilize.
Step 3. Inspect for faulty electrical connection.
Check all electrical lines and connections.
Step 4. Check for partial failure of components.
Replace faulty switch, thermostat, heaters, or wiring
as required.
3. NO HEAT
Step 1. Check for loss of power.
Check line voltage and connections. Check heaters and
thermostat.
4. LOSS OF HEAT (CONTROL)
Step 1. Check if thermostat contacts are sticking.
Replace thermostat.
Step 2. Check heater for short.
Correct short or replace heater.
4-20

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