HARVEY Chemiclave EC5500, Service Manual, Page: 29 / 56

29
M
AINTENANCE AND
S
ERVICING
5. Check for leaks around tube fittings and pipe
threads at the pressure gauge, metering valve,
and chamber. Do this by brushing the areas
with soapy water. Leaks will appear as
bubbles or foam that form and grow larger.
6. If there is a leak, tighten the leaking part.
Repeat the pressure test. If there is still a leak,
check for damage to fittings or threads.
Replace as necessary.
7. If there is extensive damage, contact
Barnstead/Thermolyne Technical Support.
Leaks at Gasket and Door
1. IF UNIT IS AT ROOM TEMPERATURE:
• Pressurize the unit. To do this, perform steps
2-4 of “Leaks at Fittings.”
• Brush around the edge of the door with soapy
water. Leaks will appear as bubbles or foam
that form and grow larger.
• Brush with soapy water around the seal
screws at the center of the door. Watch for
bubbles or foam that forms and grows larger.
2. IF UNIT IS HEATED TO READY TEMPERA-
TURE:
• Place a few drops of lightweight oil at the top
edge of the door.
• Allow the oil to flow completely around the
door.
• Place a few drops of oil at the top of the seal
screws (see Figure 5-4). Let the oil flow
around the screws.
• Foaming or bubbling indicate leakage.
3. If the door leaks around the edge, increase the
door tension (see “Door Adjustment”).