CHEMICLAVE METERING VALVE SERVICE TIPS
Following are several Service Tips that may assist you in the installation and
servicing of the AllClaveParts Metering Valves that fit the MDT-Harvey (Barnstead
Thermolyne) Chemiclave® Models E, 4000, 5000, 5500 and 6000.
When rotating the control shaft from the Depressurized position to the
Pressurized position, or vice versa, a small amount of solution is forced
out through the two vent holes in the outer body of the metering valve. This
is a normal function of the valve. In fact, a splash shield accompanies every
AllClaveParts valve and is designed to absorb the drips.
However, there are times you should be suspicious and heres what to do. If
the machine loses pressure, check the o-rings and tubing for cracks. Check
for excessive bubbles in the fill tube. Then make sure that the operating temperature
is below 275°F because the solution will start to boil away at 272°F.
(Tip: If there are excessive bubbles in the fill tube, without a pressure leak,
this means that the chamber temperature is too high.
Use the
Max Register Thermometer
to confirm that the temperature is too high and not a valve problem. If you see fluid being pushed
through the vent line, check the valve o-rings. If the main reservoir is depleted long before it
should be, check the valve o-rings.
As you can see, the o-rings are the key to maintaining a working valve. In
fact, AllClaveParts Metering Valves come with a FREE lifetime availability of the
Metering Valve Service Kit (Part #MDK057) that includes all of the orings
and lubricant that you will need.
Ask for Your FREE Kit (Part #MDK057) with any of the Metering Valves (
Part #MDV010, MDV011 or MDV016) the next time you place an order.
Thats the AllClaveParts Advantage!
