Nova-Tech LMI Roytronic Series A Metering Pump - Manual (Page 17)

17
OPERATION
7. External Control Connector (5-Pin): This connector is for the connection of various
options and accessories that can be used to externally control the pump. The pin func-
tions (and the wire color for the standard LMI external control cable) are as follows:
1. Remote On Signal (Brown)
2. Ground/Return Connection (White)
3. External Pulse Signal (Blue) (used only with A3, and A7 Series pumps)
4. 18Volt Supply Voltage (Black)
5. 4-20mA Input Signal (Green/Yellow) (used only with A8 Series pumps).
Some of the accessories available for use with A3, and A7 Series metering pumps are
listed below. Note that an Adapter Cable (48488) is needed when connecting any of the
MICROPACE(TM) units or flowmeters.
A. MICROPACE ™ A/D Converter (MP-100) - for translating a 4-20 milliamp signal
into an analog signal.
B. MICROPACE ™ Divider (MP-400D) - for reducing the frequency of high frequency
pulses.
C. MICROPACE ™ Multiplier (MP-500M) - for increasing the frequency of low
frequency pulses.
D. Pulse Transmitter (48489) - for pulsing in time with another LMI Electronic
Metering Pump.
E. RFP Flowmeter and Programmable Divider - for pacing the stroke frequency off
of the system flow.
F. FC Flowmeter/Contactor - for pacing the stroke frequency off of the system flow.
4.2 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.
4.2.1 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 Adjust-
ment Knob at 100%.
3. Turn The FastPrime ™ knob 1 to 2 turns counter-clockwise Q.
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 P until hand tight and SHUT THE
PUMP OFF.
6. The pump is now primed.
7. Proceed to output adjustment, Section 4.3.
1.0000
D
E
DETAIL D
SCALE 5 : 1
DETAIL E
SCALE 5 : 1
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