MODEL YB8 PROGRAMMING SECTION
April 1999/Manning Environmental Inc.
3DJH%
*19 Pump Tube Utilities
*19 resets the tube life pump count. A peristaltic units ability t o o perate and perform t o specifications, such as
transport velocity and lift height is, t o a certain extent, determined by the medical grade silicone rubber pump
tubing used in the system. T he characteristics o f t he tubing change as it wears. It becomes less resilient, less
able to maintain its shape, develops pinch points on the outside edge of the tube, and as such is not capable of
the performance it had when it was new. T o maintain optimum performance, it is necessary t o mo nitor t he
wear on the tube. *19 does this by enabling the operator to set a maximum number of pump revolutions, the
tube currently in use, will be allowed to withstand. T his, in effect, determines the tube’s useful life. M anning
recommends not exceeding 1,000,000 pump counts for a singular tube as, by this time, there is risk that the
tubing could fail causing a variety of problems. *19 should be used every time the pump tubing is changed.
The user will be alerted t o change the tubing, when the tubing reaches the number of counts set. The warning
will appear, every time the user executes a Program Mode, by pressing <START>. S ince all programs are
initiated by pressing <START> t he warning will always appear, if a ppropriate, before the program is initiated.
This allows the user the opportunity to exit the program and change the tubing. Once the tubing is changed,
the user can re-enter the program and begin sampling.
When t he pump t ubing is to be changed, the user will enter into *19 Mode, just like entering any of the other *
Modes. T he sampler will prompt the operator t o clear t he current pump count by pressing 1, o r to maintain
the current count by pressing 0. It is advisable to reset the pump counts when changing the tubing so an
accurate accounting of the number of revolutions, the tube in the pump has experienced, can be obtained. At
this juncture t he user will be asked t o enter a number for the tube life warning which represents t he number of
revolutions the current t ube will be allowed t o accumulate before a warning is issued. Once entered, the
system will return to the sampler ready prompt and the system will be ready t o program.
Display on LCD Explanation
SAMPLER READY
04/30 04:30:02
This display shows t he sampler is ready t o program. I t displays the
current time. From here the user can enter any TIME, FLOW, or *
Mode. Press the * key to access the * Mode.
ENTER * MODE?
__ __ 04:30:02
Prompts the user to enter either a program or a * Mode. Press 19
and <ENTER> to proceed.
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