LMI Roytronic Series A Pump Startup and Adjustment

Start-up and Adjustment

  • The pump is normally self-priming if suction lift is 5 ft (1.5m) or less and the steps below are followed.
  • Pumps are shipped from the factory with water in the pump head to aid in priming.

 


Start-Up/Priming for FastPrime™ Heads

Read this entire section completely before proceeding.

When all precautionary steps have been taken, the pump is mounted, and the tubing is securely attached, you may now start priming the pump.

  1. Plug in or switch the pump on.
  2. While the pump is running, set the Speed Adjustment Knob and the Stroke Adjustment Knob at 100%.
  3. Turn The FastPrime™ knob 1 to 2 turns counter-clockwise.
  4. The suction tubing should begin to fill with solution from the tank.
  5. A small amount of solution will begin to discharge out the return line of the FastPrime™ valve. Once this happens, turn the knob clockwise until hand tight and SHUT THE PUMP OFF.
  6. The pump is now primed.
  7. Proceed to output adjustment, Section 4.3.

Start-Up/Priming for Pump Supplied with 4-FV

Series A ManualRead this entire section completely before proceeding.

When all precautionary steps have been taken, the pump is mounted, and the tubing is securely attached, you may now start priming the pump.

  1. Plug in or switch the pump on.
  2. While the pump is running, set the Speed Adjustment Knob and the Stroke Adjustment Knob at 100%.
  3. Open the relief side (black knob) of the 4-FV by turning to the stop (about 1/8 turn).
  4. The suction tubing should begin to fill with solution from the tank.
  5. A small amount of solution will begin to discharge out the return line of the 4-FV. Once this happens, return the knob to the 12:00 position and SHUT THE PUMP OFF.
  6. The pump is now primed.
  7. Proceed to output adjustment, Section 4.3.

Start-Up/Priming Without 4-FV

LMI ManualRead this entire section completely before proceeding.

When all precautionary steps have been taken, the pump is mounted, and the tubing is securely attached, you may prime the pump.

  1. Plug in or switch on the pump.
  2. While the pump is running, set the speed knob and the stroke knob at 100%.
  3. The suction tubing should begin to fill with solution from the tank.
  4. Once the solution begins to exit the pump head on the discharge side, SHUT THE PUMP OFF.
  5. The pump is now primed.
  6. Proceed to output adjustment, Section 4.3.

 


Output Adjustment

Once the pump has been primed, an appropriate output adjustment MUST be made. Pump output should be calculated and adjustments made accordingly.


Total Pump Output

LMI Series A Calculate the approximate output of the pump as follows:

PUMP OUTPUT = MAX PUMP OUTPUT x % SPEED x % STROKE 

Example: A151-928SI

Use Max Output (from dataplate on side of pump) = 1 GPH (1 gallon per hour).

If the pump is set at 60% speed and 70% stroke length, the approximate pump out- put is:

1.0 x 0.60 x 0.70 = 0.42 GPH.

Multiply by 24 (hours in one day) to calculate in gallons per day. If pump is not equipped with speed adjustment, calculate by Max Pump Output x % Stroke only.


Calibration in Internal Mode

Roytronic Instruction Manual
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Once installation is complete and the approximate output has been determined, the pump should be calibrated to adjust speed and stroke for your actual desired output. (Calibration cylinders may be purchased from your local LMI distributor, ref. publication 1798.)

  1. Be sure the pump is primed, and discharge tubing and Injection Check Valve are installed as they would be in normal service (i.e., including factors such as injection pressure, fluid viscosity, and suction lift).
  2. Place the Foot Valve in a graduated container with a volume of 1000 ml or more.
  3. Plug in and switch pump to Internal Mode. Pump until all the air is exhausted from the suction line and head.
  4. Turn the pump off. Refill graduated container to a level starting point.
  5. Using a stopwatch or timer, turn the pump on for a measured amount of time (120 pump strokes minimum). The longer the time period, the more confident you can be of the results. Be sure to count the number of strokes during the calibration period when making comparisons.
  6. Turn the pump off. Note the time elapsed in relation to volume displaced in the graduate. Now, calculate the output in the time unit you choose (minutes, hours, days, etc.).
  7. If the output is too low or too great, use the Stroke Adjustment Knob and/or the Speed Adjustment Knob to fine-tune the amount of flow, estimating required correction and repeat steps 1-7.

Calibration in External Mode

LMI ManualSince pump output is governed by an external device such as Flowmeter-Pulser, Liquitron™ Controller, or 4-20 mA DC signal from an instrument with an LMI Analog-to-Digital Converter, only the output per stroke may be calibrated.

  1. With pump primed and discharge tubing connected to the injection point as it would be in normal service, place Foot Valve Assembly in a graduated container with a volume of 1000 ml or more.
  2. Switch pump to Internal mode with Speed Adjustment Knob set at 100% until air is exhausted from suction line and pump head.
  3. Switch pump OFF and refill graduate to a starting point.
  4. Switch pump ON and count the number of strokes for exactly one minute, then switch pump OFF.
  5. Note volume pumped during the calibration period of one minute. Divide into this the number of strokes to determine the volume of solution pumped per stroke.

Example: 720 ml in 240 strokes = 3.0 ml per stroke.

Multiply this by your expected stroke rate per minute, per hour or per day and compare with desired output requirements.

7. Turn Stroke Adjustment Knob to your best estimate of required correction and repeat calibration procedure.

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