MARLO MATD 9500 XT, Руководство пользователя

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11
5.0 START UP AND OPERATION
5.1 POWER
All metering pumps are available in 115 and 230 volts at 50/60 Hertz, single phase.
In addition, certain models are available in 12 volt DC. Prior to start-up always
check to insure that the pump voltage/frequency/phase matches that of the power
supply.
If pump is fitted with a PVC pump head (7 th position of model
number is “V” or "W". Note: PVC is gray, not black), uniformly
hand tighten the four head screws before use, 18-22 in. lbs.
(3.2 -3.9 kg/cm). Periodically tighten after installation.
5.2 PRIMING
When working on or around a chemical metering pump instal-
lation, protective clothing and gloves and safety glasses should
be worn at all times.
All pumps are tested with water. If the chemical to be pumped
reacts when mixed with water (e.g. sulfuric acid, polymer) the
pump head should be removed and dried thoroughly along with
the diaphragm and valve seats.
FIGURE 8
14
5.3.3 Controlling Procedure cont'd.
Example Selected Model = LPD4
Set Stroke Length = 100%
Set Stroke Rate = 100%
Output Capacity = 21 gallons per day (GPD)*
(Rated Pressure)
Desired Flow = 15 GPD
Adjust Stroke Rate to 80%
Output Capacity
= 0.80 x 21 = 16.8 GPD*
Stroke Length Setting = 15 x 100 = 90% approximate
16.8
Thus to obtain the desired flow, stroke length is set at 90% and stroke rate
is set at 80% i.e. output capacity = 0.90 x 0.80 x 21 = 15.12 GPD*
*IMPORTANT!
Check these values by measurement. Output capacity is higher when
feeding against less than rated pressure
5.4 CONTROL PANEL SYMBOLS
The pumps come with universally accepted symbols, the following is pro-
vided for your convenience.
FIGURE 11