Nova-Tech LMI Series HH Metering Pump - Manual (Page 13)

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7.0 Output Adjustment Controls
Once the pump is primed, the output must be adjusted to meet the
requirements of the system. This adjustment is made by varying
both the stroke and speed of the pump.
7.1 Pressure Control Adjustment (HH9 Only):
The pressure control adjustment, unique to LMI, allows for the fine
tuning of your HH9 Pump. This reduces over pumping of chemical
and power consumption while increasing the accuracy and life of
your pump.(See Section 11.3)
7.2 Speed Adjustment:
The HH9 speed control can be adjusted manually, using the keypad
or externally as described in section 11. In either case, the speed
adjustment controls the frequency or rate at which the chemical is
being injected.
The HH1 and HH7 come equipped with a manual speed adjustment
knob. Turning the knob clockwise to the maximum setting increases
the stroke rate up to 100 strokes per minute.
HH7 Only:
When operating the pump in external mode, the
speed control knob should be turned fully counter
clockwise.