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4. Reassemble the sampler and clamp-mount onto the piping tee .
Starting the Sampler
 NOTE
Delayed start is designed to avoid sampling product which may be trapped in a transfer hose or other piping at the
conclusion of pumping a load . Delay before the first sample should be adjusted to the minimum time needed to clear the
hose of standing product and ensure that product at the sampler is from load being pumped, not carryover from a previous
producer .
Delay time adjustment is made by changing the setting on the delay potentiometer located in the upper left-hand corner of
the timing module .
Turn off power to the sampler controller before opening the enclosure or making internal adjustments .
1. With the power OFF and the controller enclosure open, locate the delay potentiometer on the timer module . The
dial is calibrated in percentages [%] of 0-100 . Adjust by turning the knob with a screwdriver in the slot provided .
2. Start delay adjustment (0 .1 - 10 seconds) .
3. Turn clockwise to increase, counterclockwise to decrease
delay .
4. Start delay is a single turn potentiometer . It will not turn more
than a nominal 270° . Adjustment is 1/10 second minimum to
10 seconds maximum .
5. When the sampler controller is operated through a DELAY-
SAMPLE OFF sequence, allow approximately 10 seconds for
the delay timer to reset before starting the next sampling
operation .
6. After adjusting the delay time, replace the controller cover
securely onto the box .
Maintenance
Refer to your specific group drawing that is included with this manual .
The ISOLOK MSA sampler should be cleaned and checked at daily and weekly intervals for proper operation and to
ensure any wear is detected so preventive maintenance can be performed .
Never use pipe wrenches, vise-grip pliers or other marking or abrasive tools on your sampler .
Daily Cleaning
Clean the sampler by removing the unit from the line tee, partially disassemble it, and manually clean it . Typical steps
for cleaning the sampler include:
12
Sentry Equipment Corp
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