Cameron CLIF MOCK CMC-250, Руководство пользователя

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December 2006 4 CMC-250 Circulating System
Operation
1.
After a sample is received into the receptacle, turn the pump motor ON for at least 5
minutes to circulate the fluid (see note below).
•
A 5-gal system requires a minimum circulation time of 5 minutes or until the volume
in the receptacle is circulated five times.
•
A 10-gal system requires a minimum circulation time of 10 minutes of circulation or
until the volume has been circulated five times.
NOTE: The pump is rated at approximately 5.0 gpm at 0 psig backpressure and a fluid
viscosity of 100 SUS (21.6 CTS) at 60
°
F (16
°
C).
For most light to medium-weight crude oils ranging up to API 24 with a kinematics viscosity
less than 160 CTS at 60
°
F (16
°
C), 5 minutes of circulation time should adequately mix the tank
volume.
For most crude oils heavier than API 24 with a kinematics viscosity greater than 160 CTS and
temperatures below 60
°
F (16
°
C), consider allowing additional circulation time to ensure the
tank volume is thoroughly mixed.
2. While the circulating pump is ON, open the sample draw-off valve (item 8), allowing the
sample to flow directly into laboratory glassware. Close the sample draw-off valve (item
8) and cap the laboratory sample transport receptacle immediately.
3. To drain the (tank) receptacle, perform the following steps:
a. Turn the circulating pump ON.
b. Close the return valve (item 13A).
c. Open the drain valve (item 13B) and pump isolation valve (item 13 C), and allow the
receptacle to drain.
d. When the receptacle is empty, close the pump isolation valve (item 13 C) and open
the return valve (item 13A) to drain the re-circulating tubing (item 9).
e. Turn the pump motor off, and close all valves.
4. To remove the cover on the receptacle, perform the following steps:
a. Open the sample draw-off valve (item 8) to relieve the pressure from the receptacle.
b. After the pressure is relieved, turn the plastic knob counter-clockwise until threads in
the knob disengage from the stud in the top of the lid.
5. Thoroughly clean the receptacle after every sampling batch to prevent cross-
contamination of sampled fluids.