5.0
How To Operate The C-1700N
5.1
Adjusting the Pump Output- Standard models (fig. 5.1) -
The C-1700N flow rate(s) can be adjusted
within a range of 5% -100% of maximum output (20:1 turndown ratio) by means of two mechanical,
cam type mechanisms. The mechanism adjusts the pump’s stroke length to an infinite number of settings
within the flow range. Because the pump’s output is reduced by increasing the pressure of the system
being injected into, the amount of suction lift, and the viscosity of the fluid being injected, the pump
must be over-sized to allow for these factors. Sizing the pump to allow adjustment within the midrange
is preferred to maintain accuracy. Consult the factory for individual pump model output curve data.
To
adjust the pump’s output
:
1. With the pump running, loosen the set screw.
2. Turn the adjustment knob to the desired setting.
3. Re-tighten the set screw.
C-1700N
Page 8
5.2
Adjusting the Pump Output - DELUXE Models (fig. 5.2)
In addition to the two cam type mechanism adjustments (section 5.1), the pump output of the C-1700N
deluxe unit equipped with an optional electronic cycle timer board can also be fine tuned by adjusting
the timer adjustment knob. The total-time cycle is factory preset and is not user adjustable. The on-time
cycle is adjustable from 5% to 100% of the total cycle time. Example: If the total-time cycle is 5 seconds
and the on-time cycle is adjusted for 20 percent, the pump will run for 1 second and turn off for 4
seconds (5 second total cycle). This cycle is repeated until either the cycle time is changed or the input
power is disconnected from the pump.
Note: When the input power is disconnected from the C-1700N, the unit will maintain the last
adjusted settings. When power is restored to the pump, the C-1700N will begin to pump using the
last time cycle setting.
FIG. 5.2
To
adjust the
On-Time :
Turn the timer adjustment knob located on the
junction box cover.
Clockwise increases the time on.
FIG. 5.1
Adjustment Knobs
(Cam Type Mechanism)
Cycle Timer
Adjustment Knob
Junction Box
MAX
MIN
1
2
3
4
5
6
7
8
9
MAX
MIN
1
2
3
4
5
6
7
8
9
ADJUST WHILE
RUNNING
LOOSEN SCREW
TURN KNOB
RE-TIGHTEN SCREW