7
L-1600 (04/01/21)
OPERATION
1. Before start up check that oil is halfway up to the clear
oil sight tube. If necessary, fill to the correct level with
Hypro oil (part number 2160-0038). Hypro oil is a specially
formulated, high-grade, non-detergent, SAE 30 weight oil
formulated to prolong pump life.
2. Make sure the suction hose barb is tightly screwed onto
the suction union and that there are no air leaks on the inlet
side of the pump.
3. Check the charge pressure on the pulsation dampener
before starting the pump. The pressure is checked with a
standard automotive air gauge. The pressure should be at
approximately 20% of the maximum pressure that you will
be operating the pump at. Exercise caution when checking
pressure to avoid losing pre-charge.
4. The relief valve bypass port should be connected back to
the liquid tank without restrictions. Do not hook bypass line
back to the inlet port or inlet hose.
5. Allow the pump to start under low pressure by removing
restrictions on the outlet of the pump. The restriction on
the pump is removed by rotating the Pressure Release
knob on the control unit, fully toward bypass arrow
direction.
6. Check oil level daily while pump is running. Start the pump
and let it run for approximately one minute at low pressure.
Adjust Pressure Release knob to run pump at operating
pressure and check the oil sight tub level again to be sure
the oil level is correct. Add Hypro oil if necessary.
7. Adjust the pump to the desired pressure by changing
the relief valve setting on the control unit, relief valve or
unloader. All the outlet valve must be closed as shown in
Figure 3.
INSTALLATION AND OPERATION
First back out the pressure regulator adjustment knob to zero.
Then rotate the Pressure Release knob to Pressure arrow
direction. Adjust the pressure by rotating the relief valve
adjustment knob to the desired pressure.
For all discharge hoses, use hose with an operating pressure
rating equal to or greater than the maximum pressure rating of
the pump. High pressure clamping should be used on all outlet
hose connections.
The bypass return outlet on all control units must
be connected directly to the tank without restrictions or ball
valves.
Always wear safety goggles when working with
spring-loaded fasteners or devices.
During the first step, you are strongly advised to
start the pump with the regulating valve knob turned to 0
pressure and with the lever in the by-pass position. Maintain
this configuration for a couple of minutes so as to lubricate the
internal components of the pump and allow the diaphragms to
set in position before the pressure is increased.
FIGURE 3
OUTLET
OUTLET PRESSURE REGULATOR
ADJUSMENT KNOB
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