KETTLE VENTING
INSTRUCTIONS Pressure
Relief Valve
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| 150 | 200 |
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| 100 | 250 |
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| 20 |
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50 | 30 |
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10 | 40 | 300 |
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0 | 0 |
| 50 |
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| R |
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| 350 |
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| A |
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| T |
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| N |
| 60 |
| Valve |
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| 400 | |
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psi | kPa | Ring |
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Access
Panel
The following venting procedure should be followed when the Vacuum/Pressure Gauge needle is in the "VENT AIR" zone:
NOTE: Check for and eliminate leaks prior to venting (See REPAIRING LEAKS IN STEAM JACKETED KETTLE FITTINGS on page #27).
DANGER: PRESSURE RELIEF VALVE WILL EXHAUST HIGH TEMPERATURE STEAM. CONTACT WITH SKIN COULD RESULT IN SERIOUS BURNS. KEEP FACE,
HANDS AND BODY CLEAR OF DISCHARGE.
DANGER: WORKING ON MACHINES
WITH POWER COULD RESULT IN
SEVERE ELECTRICAL SHOCK.
5 | 6 | 1. Remove Access Panel from |
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7back of main kettle console.
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| 2. Turn kettle ON and set temperature |
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| 8 | |
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| control to 10, heat the empty kettle | |
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| until unit cycles off. | |
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| 9 | |
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| 3. Vent kettle by pulling Valve Ring | |
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| 1 |
| 10 |
| eight to fifteen times, holding | |
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| valve open for two seconds | |
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OFF |
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| each time. |
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| NOTE: If unit cycles ON, stop |
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| venting and wait for kettle to cycle |
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| OFF before continuing. |
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| 4. Turn kettle OFF. Add cold water |
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| to kettle until its surface |
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| temperature is below 100°F. The |
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| pressure gauge needle should |
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| be in the green zone, indicating a |
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| vacuum in the kettle’s jacket. |
| 150 | 200 |
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| 5. If needle is in the green zone then |
100 |
| 250 |
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50 | 20 | 30 |
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| venting was successful. If not |
10 |
| 40 | 300 |
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| repeat procedure. | ||
0 |
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| 50 |
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I |
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R |
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| 350 |
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A |
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T |
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N |
| 60 |
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E |
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V |
| psi |
| 400 |
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VACUUM LEAK TEST
PROCEDURE
If the kettle will not hold vacuum, test for leaks at:
A.Water Level Probe.
B.Pressure Relief Valve/Pressure Gauge and connecting plumbing.
C.Boiler Drain Cap.
D.Sight Glass.
LEAK TEST PROCEDURE:
1.Heat kettle until unit cycles off.
2.Shut off power to the kettle at the fused disconnect switch.
3.Spread Bubble Type Leak Detector over suspected areas and watch closely for bubbles.
4.Repair areas as required.
REPAIRING LEAKS IN STEAM JACKETED KETTLE FITTINGS
If unit will not hold a vacuum the most likely cause is a leak at one of the fittings.
Often, the easiest way to eliminate a leak is reseal the suspect areas.
1.Water Level Probe
Remove,clean threads, apply teflon thread sealant and reinstall.
2.Pressure Relief Valve
A/ Inspect for signs of leaks. Replace if required. B/ Remove, clean threads, apply teflon thread sealant and reinstall.
3.Pressure Gauge
A/ Inspect face of gauge. If it contains moisture on the inside of face replace.
B/ Check tightness of plumbing connection to pressure Gauge.
3.Sight Glass
A/ Check tightness of sight glass.
B/ Replace "O" ring if required.
27
