Masterflex 07519-10 Manual De Operación página 12

(3) Select Pump Speed
Select fixed speed drive or adjust speed of variable speed drive to provide desired nominal flow rate within the rotor rpm
speed range shown for the pump model selected.
(4) Adjust Occlusion Settings on Cartridges
CAUTION: Excessive occlusion can cause high pump temperatures and early tubing and roller failure. Do not
set occlusion tighter than what is recommended in Table 4.
NOTE: With large and small cartridges, the scale identified as "Mflex" provides nominal occlusion for MASTERFLEX
®
L/S precision tubing at the #3 – #4 setting. With small cartridges only, the scale identified as "Micro" provides nominal oc-
clusion for .9 mm (0.035 in) wall Microbore Tubing Sets at the #3 – #4 setting.
With a multi-channel cartridge system, flow rate, pressure sensitivity and tubing life can be fine-tuned—even while the
pump is running. No lost time, and with operating speeds up to 600 rpm, you get higher maximum flows with the same
size tubing.
Figure 9A (large and small cartridge) shows the wedges adjusted at #3 on the occlusion setpoint scale for the
MASTERFLEX tubing.
Figure 9B (small cartridge only) shows the wedges adjusted at the #3 – #4 setting on the scale for the Microbore Tubing
Sets.
The Occlusion Adjustment Knob, (see Figures 9A and 9B), controls a screw mechanism to move the occlusion wedges.
Once a Cartridge is adjusted to a desired setting for a particular application, there is no need to reset. Or, you can record
settings and quickly reproduce them at any later time.
Rotate knob to
adjust occlusion
Occlusion
Wedge
FIGURE 9A OCCLUSION INDICATIONS
FOR THE MASTERFLEX TUBING
(a) Normal Occlusion Settings
The following table shows the appropriate occlusion settings to provide satisfactory performance for various tubing
sizes. (For optimum occlusion settings, see following section.)
Tubing
Microbore Tubing Set
® ®
MASTERFLEX L/S Precision
1 High Occlusion
5 Low Occlusion
TABLE 4 RECOMMENDED OCCLUSION SETTINGS
Large Cartridge
Mflex Scale
N/A
#3 – #4
Mflex scale
FIGURE 9B OCCLUSION INDICATIONS
FOR THE MICROBORE TUBING SETS
Small Cartridge
Mflex Scale
N/A
#3 – #4
Mflex scale
10
Rotate knob to
adjust occlusion
Occlusion
Wedge
Micro Scale
#3 Micro Scale
N/A
®