Hypro 9910-D1064, Installation, Operation, Repair And Parts Manual

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Control Unit 9910-VDR50
The Model 9910-VDR50 Control Unit is designed for the control of pressures up to 725 psi and flows to 35 gpm. It
consists of an adjustable pressure relief valve, a manual pressure release lever, and two individual ball valve-
controlled, 1/2" O.D., hose barb outlets.
Pressure Gauge
Main Bypass Outlet
(Connect directly to
tank without
restrictions or ball
valves)
Pressure
Release
Lever
Pressure
Adjustment
Knob
Retaining Clip
1/2" Ball
Valve Outlets
*Refer to the parts list on page 11 for part number references.
Installation
Operation
Form L-1383 (12/11, Rev. B)
Direct Mounting*
1. Locate the pump discharge manifold. With o-rings
(Ref. 13) lubricated and in position on selector housing
inlet (Ref. 17), plug into the discharge manifold of the
pump. Lock into place with the retainer clip (Ref. 10)
and cotter pin (Ref. 53).
2. Connect the bypass hose to the bypass port hose
barb elbow (Ref. 1), and run it unrestricted back to the
supply tank.
3. Connect the desired number of high pressure outlet
hoses to the outlet hose barbs (Ref. 56). The unused
hose barb can be shut off with the ball valves
provided.
NOTE: For all discharge hoses, use hose with an
operating pressure rating that is equal or greater than
the maximum pressure rating of the pump.
Remote Mounting*
1. Install the mounting bracket (Ref. 52) in the desired
position and secure.
2. With the o-rings (Ref.13) lubricated and in position
on the selector housing inlet (Ref. 17), assemble into
the 3/4" (M) NPT female adapter (Ref. 48). Lock in
place with the retainer clip (Ref. 10) and cotter pin
(Ref. 53).
3. With o-rings (Ref. 13) lubricated and in position on the
3/4" (M) NPT male adapter (Ref. 43), slip into the
pump discharge manifold. Lock in place with the
retainer clip (Ref. 1) and the cotter pin (Ref. 53).
4. With high pressure hose, connect the NPT fitting on
the discharge manifold of the pump with the NPT
fitting on the control unit.
5. Connect the bypass hose to the bypass hose barb
elbow (Ref.1), on the control unit and run it
unrestricted back to the tank.
6. Connect the desired number of high pressure outlet
hoses to the outlet hose barbs (Ref. 56). Unused hose
barbs can be shut off with the ball valves provided.
1. Refer to the pump operation instructions for the proper
operation.
2. The control unit can be put into full bypass mode by
turning the pressure release lever (Ref. 18)
counterclockwise as far as it will go.
3. With the pressure release lever (Ref. 18) rotated
clockwise to pressure position, pressure can be
adjusted by rotating the pressure adjustment knob
(Ref. 39) clockwise for more pressure or
counterclockwise for less pressure.
4. Flow can be controlled by ball valves on each of the
outlet ports.