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Hydraulic Power-Pak SystemOperational Manual

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Contents

The Hydraulic Power Pak System..................................................1The Hydraulic Valve System.......................................................... 2

The Solenoid Valves......................................................................3

Hydraulic Valve Circuit...................................................................4

Blender Control Valve.................................................................... 5

Control Valve Field Adjustments.....................................................6

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Hydraulic Power-Pak System P/N 51-401-8003 1

Repairs and Adjustments

The Hydraulic Power Pak System

Adjustments:1. Hydraulic Motor Starter.

This panel allows for manual and automatic operation of the hydraulic

system. The start-stop switch provides the main power and the thermal

overload to the motor. The Manual-Off-Auto switch allows for manual

and automatic operation off the motor. When the switch is in the auto

position, the permissive signal from the load rack turns the motor on. The

switch should be in the auto position during normal operation of the

blender (see page 36).

2. Hydraulic Reservoir.This is the stainless steel tank located between the two product streams.

The lid of the tank is removable and contains all of the repairable parts.

The motor, pump, bypass, pressure gauge, fill cap and tubing connections

are mounted on the lid. There is also a sight gauge mounted on the side

of the tank to inspect the level of hydraulic fluid. As long as you can see

hydraulic fluid in the sight glass the level is adequate. If the hydraulic

fluid becomes cloudy, replace it with new fluid (see page 36).

3. Hydraulic Pressure Setting.

The hydraulic pressure should be set between 80 - 90 psi. The pressure

adjustment screw is located inside the fill cap. To increase the hydraulicpressure, turn the adjustment screw clockwise. To decrease the pressure,

turn the adjustment screw counter clockwise (see page 36).

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Hydraulic Power-Pak System P/N 51-401-8003 2

Repairs and Adjustments

The Hydraulic Valve System

Adjustments:

1. The Opening Speed Needle Valve.

This needle valve is in series with the normally closed solenoid. It is a solid brass

valve with an adjustment knob. This valve controls the speed at which the valve

opens. Turning the knobs clockwise will slow down the opening speed of the

valve. Turning the knob counter clockwise will increase the opening speed of

the valve (see page 38).

2. The Closing Speed Needle Valve.

This needle valve is in series with the normally open solenoid. It is a solid brassvalve with an adjustment knob. This valve controls the speed at which the valve

closes. Turning the knob clockwise will slow down the closing speed of the

valve. Turning the knob counter clockwise will increase the closing speed of

the valve (see page 38).

The needle valves are provided for the fine adjustment and smooth

operation of the hydraulic valve. Once they are set, there is no reason to

change their positions unless the hydraulics of the product lines undergo

a dramatic change: (i.e. a new product pump is installed).

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Hydraulic Power-Pak System P/N 51-401-8003 3

Repairs and Adjustments

The Solenoid Valves

Repair:Repairing a clogged or defective solenoid.

Note: Before attempting this repair turn Power-Pak power OFF

Locate the defective solenoid and disconnect the tubing from the solenoid

body. Next remove the four bolts holding the brass body together. Pull down

on the lower part of the brass body until it separates from the upper body.

Examine the solenoid body and diaphragm assembly for any debris or damage.

Locate the brass orifice on the diaphragm assembly and check for debris

preventing the plunger from seating against the orifice. Next check the plunger

seat for any deep depressions or holes. If there are no signs of unusual wear

and all debris has been removed, put the solenoid back together and test it usingthe hydraulic valve test procedure. If the solenoid still does not work properly,

replace the internal components with the ones found in the solenoid repair kit.

To check the solenoid coil, place an Ohm meter across the two red leads. If

you get a reading, the solenoid is presumed to be in good condition.

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Hydraulic Power-Pak System P/N 51-401-8003 4

Hydraulic Valve Circuit

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Hydraulic Power-Pak System P/N 51-401-8003 5

Actuator

V-ball Valve

Outlet

NormallyClosed Solenoid

Electrical Junction Box

OPEN

Normally OpenSolenoid

Blender Control Valve

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Hydraulic Power-Pak System P/N 51-401-8003 6

Control Valve Field Adjustments

Actuator

V-ball Valve

Electrical Junction Box

OPEN

(Closing Speed Needle Valve)Open This Valve To Increase

The Closing Speed Of The Valve.

Normally OpenSolenoid EF8210G33

(Behind)Normally Closed

Solenoid EF8210G6(Behind)

(OpeningSpeed Needle Valve)Open This Valve To Increase

The OpeningSpeed Of The Valve.