Pulsafeeder MEC-O-MATIC VSP Series - Manual (Page 5)

Page 5 of 8
5. Suction and Discharge Tubing - Take the 15-ft (4.5m) length of .25in.-diameter tubing included, measure
and cut the lengths needed to run from the pump head to the injection fitting, and to the chemical tank
(Figure 2). Cut the tubing ends square
6. Refer to maintenance section to install the pump head
tubing.
7. Connect discharge tubing to the injection fitting.
Remove the injection fitting nut slide it over the end of
the tubing, see Figure 3. Push the end of the tubing
onto the injection fitting. Note: Immerse tubing in hot
water to soften prior to pushing on fitting. Turn on and
tighten the nut firmly, Hand tighten only do not use
wrenches.
8. Connect suction tubing to strainer - Install strainer so it is off the bottom of the chemical container 1-2
inches (2.5-5cm) see Figure 2. Measure suction tubing length required. Cut tubing end square and install
on suction fitting of the pump. Hand tighten only do not use wrenches.
OPERATION
1. Fill the chemical tank with the chemical you will feed.
2. Turn the feeder switch on to start the pump. It will begin to feed chemical into the system when all tubing
has filled.
3. Set the feed percentage adjustment knob - Remove hole cover (item 9) and turn the potentiometer shaft
to vary motor RPM to achieve the desired feed rate, reference feed rate chart shown in Figure 4. For
example, to feed approximately 6 gallons (22.7-liters) per day with the VSP-12, set the potentiometer shaft
approximately in the center of its range.
NOTE
: To get actual feed rates for specific settings, actual output must be verified by measuring volume
output. Use the flow chart as a guide (Figure 4). To get actual feed rate for specific setting each pump must be
calibrated for its flow. As with any peristaltic pump output varies with pressure and tubing condition. It is
recommended that feed rate be verified at every tubing change and after every 250 hours. More critical
applications require more frequent verification.