Hobart WPS-1200 Installation Manual

TM

WPS1200 WastePro
WASTE EQUIPMENT SYSTEM

MODEL

WPS1200 ML-130046

701 S. RIDGE AVENUE

TROY, OHIO 45374-0001

937 332-3000

www.hobartcorp.com

FORM 35393 (Oct 2014)

TABLE OF CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

VIBRATION ISOLATION FOOTPADS AND LEVELING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CHEMICAL FEEDER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

THE FOLLOWING PARTS MAY BE INCLUDED (DEPENDING ON OPTIONS SELECTED) . . . . . 4

SILVER SAVER — BY OTHERS (TROUGH EQUIPPED UNITS ONLY) . . . . . . . . . . . . . . . . . . . . . . 5

TROUGH GASKET (TROUGH EQUIPPED UNITS ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

OPTIONAL MAGNET FOR SILVER SAVER (TROUGH EQUIPPED UNITS ONLY). . . . . . . . . . . . . 5

TROUGH PIPING DETAIL (TROUGH EQUIPPED UNITS ONLY). . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

FLANGE DETAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

PULPER INSTALLED UNDER A DISH TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

PLUMBING CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

WATER CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DRAIN CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

REMOTE PUSH-BUTTON STATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

MOTOR ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ELECTRICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ELECTRICAL INSTALLATION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

FEEDING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SHUTDOWN PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CLEANING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CLEANING COMPOUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

WATERPRESS DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

© HOBART, 2005

–2–

Installation, Operation and Care of

WPS1200 WastePro

TM

WASTE EQUIPMENT SYSTEM

SAVE THESE INSTRUCTIONS

GENERAL

The WPS1200 Waste Equipment System prepares waste materials for disposal using a self-contained
pulper and a waterpress. Paper, plastic, foil and food waste are fed into the pulper, shredded into small
pieces in water to make a slurry. The waterpress lifts the slurry using a stainless steel screw inside
of a perforated tubular screen. The water passes through the screen and is pumped back to the pulper.
The solids continue up the screw where they are further compacted to a semi-dry pulp, exiting through
the discharge chute to a waste container. Fresh make-up water is supplied to the pulper automatically
through a solenoid valve. The original volume of waste material is reduced significantly.

The pulper has a 6 h.p. motor, stainless steel components, carbide and hardened stainless steel
shredder blades. The 2 h.p. motor at the waterpress turns the stainless steel screw. A 3 h.p. motor
and pump returns the process water to the pulper.

An optional feed tray (by Hobart) allows waste materials to be fed into the pulper. A feed trough
(fabricated by tabling suppliers) allows waste materials and water to feed through an optional water­tight opening into the pulper. A flush nozzle with throttling valve (by Hobart) is an available option for
the front end of the trough. A silver-saver sink (by others) can be installed in the feed trough; a silver
saver magnet is an available option (by Hobart). Mounted below the sink, it restrains ferro-magnetic
objects from entering into the pulper.

WALL-MOUNTED

CONTROL BOX

FLUSH NOZZLE

SILVER SAVER SINK

(BY OTHERS)

MAGNET

REMOTE PUSHBUTTON STATION

PULPER

FEED TRAY (ALTERNATE

POSITIONS AT 15° ANGLES)

FEED TROUGH (BY OTHERS)

1 X 1" PIPE — DRAIN FLUSH

FEED TROUGH CONNECTION

(ALTERNATE POSITIONS

AT 15° ANGLES)

MACHINE CONTROL BOX

WATER SUPPLY CONNECTIONS

PULPER MOTOR HOUSING

HINGED COVER / LID LATCH (OPPOSITE

FEED TROUGH OR FEED TRAY)

DISCHARGE CHUTE

(ALTERNATE POSITION)

CHEMICAL FEEDER PUMP

DISCHARGE CHUTE

WATERPRESS MOTOR

WATERPRESS

DISCHARGE CHUTE

(ALTERNATE POSITION)

DRAIN VALVE

Fig. 1

–3–

INSTALLATION

Prior to installation, test the electrical service to assure that it agrees with the specifications on the
machine data plate located on the front of the pulper.

UNPACKING

Immediately after unpacking, check for possible shipping damage. If the unit is found to be damaged,
save the packaging material and contact the carrier within 15 days of delivery.

LOCATION

1

Locate the waste system near a floor drain; floor should be pitched a minimum of
drain. A suitable amount of space should be provided for machine operation, cleaning and service.

VIBRATION ISOLATION FOOTPADS AND LEVELING

Vibration isolation footpads (standard — Fig. 2) must be installed on each
of the six legs of the waste system before making connections. Level the
units by threading the adjustable feet up or down as necessary.

/4" per foot to the floor

LEG

ADJUSTABLE

FOOT

RUBBER

FOOTPAD

CHEMICAL FEEDER PUMP (STANDARD)

Fig. 2

The chemical feeder pump is mounted on the waterpress. It has its own on-off switch. When on, the
chemical feeder pumps a chemical additive into the waterpress to control odors, to buffer the acidity
of the system water and to reduce foaming. Contact your chemical supplier for a recommendation for
the appropriate chemical additive. The recommended chemical pump setting is #1 which delivers 0.3
gallons per day. Each subsequent setting number is a direct multiple of setting #1. For example,
setting #2 delivers 0.6 gallons per day, etc.

Two pieces of polyethylene tubing with pre-assembled tubing fittings, provided with the system, must
be connected to the chemical feeder pump during installation. Tubing fittings must be properly
tightened but not over-tightened. Connect the short piece to the output line on the chemical feeder
pump and to the terminal on top of waterpress. Connect the long piece to the chemical feeder supply
line and insert the other end into a one gallon container of chemical additive.

THE FOLLOWING PARTS MAY BE INCLUDED (DEPENDING ON OPTIONS SELECTED)

1

/2" Brass Valves: for feed tray flush (option) and for the feed trough flush (option).

21
1 Nozzle for trough flush, rectangular piece has pipe thread with locknut on back.
1 Magnet (option) for silver saver sink.
6 Black Rubber Vibration Isolators for the legs; and a package of
6 Stainless steel screws (

10-32 x 1

1

/2") with nuts, washers and lockwashers.

1 Black Rubber Gasket with slit curtain for trough opening; which also includes approximately

16 Stainless steel screws (

10-32 x

1

/2") with nuts, washers and lockwashers.
1 Push-button Station with Start, Stop and Timed Stop switches (second p/b station is an option).
1 Remote Control Box (for wall mounting).

1

/2" SST Nipple for Silver Saver Flush

1

–4–

SILVER SAVER — BY OTHERS (TROUGH EQUIPPED UNITS ONLY)

Connect plumbing, not provided, from the stainless steel pipe nipple (1" I.D. x 1" long, not provided)
to a drain. Include a shut-off valve.

TROUGH GASKET (TROUGH EQUIPPED UNITS ONLY)

Install the trough gasket between the pulper's Trough Flange and the trough's outlet. Drill a hole pattern
in the pulper's Trough Opening flange to match the holes in the hole pattern in the trough outlet flange;
secure with the provided hardware.

OPTIONAL MAGNET FOR SILVER SAVER (TROUGH EQUIPPED UNITS ONLY)

Install the magnet underneath the silver saver by tack welding to the under side. Alternatively, drill

7

four

/32" diameter holes in the silver saver, and secure the magnet with the hardware, provided; seal
the heads of the screws with silicone sealant. Refer to Fig. 3 for position of the magnet; refer to Fig.
4 for mounting detail.

MAGNET MOUNT DETAIL

Fig. 3

Fig. 4

–5–

TROUGH PIPING DETAIL (TROUGH EQUIPPED UNITS ONLY)

Install piping from the return water outlet on the end of the pulper motor housing to the trough flush
nozzle as shown, (Fig. 5). Use the throttling valve, provided.

SILVER SAVER

(BY OTHERS)

FLANGE

TO PULPER

(BY OTHERS)

FLUSH NOZZLE

(BY HOBART)

OPTIONAL MAGNET

(BY HOBART)

OPTIONAL SILVER SINK DRAIN

(BY OTHERS)

FLANGE DETAIL

FLOW Ô

RETURN WATER

FROM RETURN PUMP

11/2" PIPING (BY OTHERS)

PLUMBING TO RUN UPHILL

OPTIONAL

THROTTLING VALVE

11/2" NPT

1

(ANOTHER 1

VALVE IS LOCATED UNDER THE

MOTOR COVER - BY HOBART)

/2" NPT THROTTLING

Fig. 5

–6–

PULPER INSTALLED UNDER A DISH TABLE

1) Cut an 18

1

/2" diameter hole in the top of the table as shown in the installation drawing.

2) Center the transition ring, provided, beneath the opening and weld it into place as shown.

3) Move the pulper into position under the 18

1

/2" diameter hole.

4) Install the trough gasket, provided, between the pulper's inlet and the trough outlet. Match and
drill the pulper trough flange to the existing hole pattern in the table's flange (Fig. 6) and secure
with the hardware, provided.

Fig. 6

–7–

PLUMBING CONNECTIONS
WARNING: PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY, SAFETY

AND PLUMBING CODES.

1) Piping for fresh water lines and drain lines are not provided by Hobart.

2) Pipe sizes are to be in accordance with Hobart recommendations.

3) All fittings must be pressure rated drainage type.

4) Keep drains accessible to machine. Do not install drains directly under Hobart equipment.

5) Do not put any external strain on the Hobart equipment.

6) Protect all Hobart equipment and piping from freezing and condensation.

Water Connection

Connect the cold water supply to the

1

/2" NPT internal-thread connector to the labeled port on the end
of the pulper motor housing with a manual shut-off valve. Incoming water pressure must be between
25 psig and 45 psig flowing.

Connect the hot water supply to the 1/2" NPT internal-thread connector to the labeled port on the end
of the pulper motor housing with a manual shut-off valve. Incoming water pressure must be between
25 psig and 45 psig flowing.

Drain Connection

Install 2" pipe from the pulper drain valve to a suitable floor drain per local code. Use an open
connection to the floor drain. Do not make a direct plumbing connection. DO NOT REDUCE.

Waterpress Overflow Connection

Install 1

1

/2" pipe from waterpress overflow to a suitable floor drain per local code. Use an open

connection to the floor drain. Do not make a direct plumbing connection. DO NOT REDUCE.

ELECTRICAL CONNECTIONS
WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH APPLICABLE

PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES.
WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT

/ TAGOUT PROCEDURES.
Refer to the electrical diagram located inside the wall-mounted control box.
The wall-mounted control box must be located away from the pulper and waterpress. Mount the wall-

mounted control box (NEMA 4) so that the bottom of the box is at least 42" above the finished floor.
To facilitate field wiring, terminal blocks are provided in both the wall-mounted control box and the
machine control box located in the pulper motor housing. Conduit and wiring (by others) should be
installed according to the electrical diagram and the information on pages 8 and 9.

The incoming electrical power supply should be connected to the wall-mounted control box after the

1

/4" conduit is installed and all connections are made between the wall-mounted control box and the

1
machine control box; terminals in each box are the same; refer to pages 8 and 9. This includes the
ground wire.

–8–

Remote Push-Button Station (Standard)
One or more remote pushbutton station(s) with Start and Stop switches and the Timed Stop switch

may be provided as ordered. These should be installed in a suitable and convenient location per local
codes, the electrical diagram and information on pages 9 and 10. Install the remote push-button
station(s) on the the dish table or at another convenient location (Fig. 7).

Motor Rotation

The Pulper motor, the Waterpress motor, and the Return Pump motor must be checked for correct
rotation after the machine has filled. Arrows are provided to indicate the correct directions of motor
rotation.

To check motor rotation, turn power on. Start and Stop the machine. Observe direction of motors.
If incorrect direction of rotation is observed, DISCONNECT ELECTRICAL POWER SUPPLY.

Interchange two power supply leads to the motor connection terminal block, in the prewired machine
control box. The overloads may need to be reset. Close the electrical access panels. Reconnect
electrical power. Turn the machine on momentarily to verify correct motor rotation.

Electrical Installation

1) Prewired control panels, operator devices and electric valves are furnished by Hobart.

1

2) Install 1

/4" watertight conduit from the wall-mounted control box to the prewired machine control

box, pull motor wires and control wires through this conduit and do the final connections.

3) Ground all electrical equipment. Transformer produces a 115 VAC nominal control circuit
voltage. The PLC produces 24 VDC circuit voltage.

4) Remote push-button station(s) to be mounted and wired at workstation by others. Bracket(s) for
mounting push-button station(s) to be supplied by others.

5) Each push-button station houses two (2) illuminated push buttons plus a Timed Stop switch.

6) Control logic wiring shall be 18 AWG (THW) or equivalent for distances less than 120 feet.

–9–

Electrical Installation Diagram

Refer to the wiring diagram shipped with the machine in the Remote Control Box.

–10–

OPERATION

WARNING: ROTATING PARTS INSIDE. KEEP HANDS OUT. DO NOT OPERATE WITHOUT: 1.

ELECTRICAL INTERLOCK ON PULPER COVER AND / OR 2. ELECTRICAL INTERLOCK ON
WATERPRESS DISCHARGE CHUTE. COVER MUST BE CLOSED AND THE DISCHARGE CHUTE
MUST BE IN PLACE BEFORE UNIT WILL OPERATE.

WARNING: DISCONNECT ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT /
TAGOUT PROCEDURES BEFORE CLEANING OR SERVICING.

CONTROLS (Fig. 7)

WALL-MOUNTED CONTROL BOX PUSH-BUTTON STATION

EMERGENCY STOP

DRAIN

ON

OFF

RESET / OPEN

DRAWINGS ARE
NOT TO SCALE.

Fig. 7

Power disconnect to the machine may be provided by the building electric system or by turning the
handle of the wall-mounted control box OFF.

To start the system, close the pulper drain valve. Make sure the main power switch on the wall­mounted control box is in the ON position.

1. The hinged cover or undercounter cover plate must be closed (when equipped). Replace the
door on the waterpress. Make sure the cover on the discharge chute is lowered.

2. Push the START button. The machine begins to fill with water. When the machine has filled
to the proper level, the green Ready light on the Start button comes on. Press the START
button and wait until there is a continuous flow of return water. Begin feeding waste to the
pulper by feeding waste down the flushed trough (flush valves must be open and adjusted for
proper throttling level if so equipped) or down the feed tray.

• After the motors have come on, the system is controlled by the START and STOP buttons.

–11–

FEEDING INSTRUCTIONS

Applications will vary widely; however, the following conditions could occur and should be monitored.

1. Overfeeding. The waste system is designed for continuous uniform feeding. The feed rate

should not exceed 60 pounds in a three minute period. Overfeeding reduces the machine's rated
operating capacity. DO NOT OVERFEED.

If waste material is delivered in large plastic bags, tear open the bag and feed one at a time.
Unopened bags can fill with air and float, hampering machine operation.

2. Foaming is caused by contaminants in the water or by certain materials in the waste, such as glue

in corrugated cardboard. Chemical defoaming agent can be added to reduce this condition;
consult your chemical supplier.

3. Corrosion. If the water and / or waste is running in an acidic or alkaline condition, use of a

buffering agent is recommended to neutralize the water. Regular testing is recommended since
rapid corrosion due to acidic or alkaline conditions can result in costly repairs.

4. Freezing. Protect all equipment and piping from freezing. Insulation and heating cables should

be used where equipment or piping is exposed.

5. Non-Pulpables (items that cannot be made into pulp). The WPS1200 Pulper is designed to

handle a limited amount of non-pulpable materials. Lighter non-pulpable items are eventually cut
and processed with the pulp; heavier materials settle to the bottom of the tank.

• DO NOT FEED glass or metal containers; if present in the plastic bags, sort them out. Glass and
metal containers are highly abrasive and accelerate machine wear. It is better to recycle glass
or metal containers using a can or bottle crusher to reduce the volume.

• DO NOT FEED rags, mop heads, wooden crates, oyster, or clam shells or heavy uncooked bones
to the pulper. The waste system cannot efficiently reduce the volume of these items.

Caution: Heavy masonry materials, tramp iron and other materials of this nature can damage
the cutters and seriously impair the pulper's ability to handle material of any kind.

Occasionally the amount of non-pulpable materials in the pulper tank may become excessive
because of their slower processing rate. When this happens, press the STOP button, engage the
locking attachment and disconnect the electrical power. After machine is stopped, scoop out the
non-pulpable materials. Then re-start the machine in the normal way.

When shutting down for short periods, it is not necessary to run the pulper until all the waste has been
pumped out of the tank. Run pulper for a few minutes to thin down the slurry, and then shut off the
machine.

During normal operation, there should be a strong flow of water returning to the pulper via trough or
tray flush from the waterpress. This flow is a clue to the performance of the machine since a sharp
reduction in this flow indicates the pulper is overloaded. If this occurs, stop feeding for a few minutes
until return water resumes its normal flow.

Avoid slugging the machine with greasy swill or overloading the pulper with bread or pastry. Mix these
items with bulky waste such as paper or corrugated boxes. The pulper will always perform better with
clean water. It is good practice to drain the machine of dirty water after every meal cycle.

It is recommended that the discharge receptacle (garbage can) not be taller than the bottom of the
discharge chute. Empty receptacle whenever necessary.

–12–

SHUTDOWN PROCEDURE

The following shutdown procedure must be followed before performing necessary cleaning and
maintenance duties.

1. With the pulper still running, push the Timed Stop switch to permit the system to be shut down
automatically. The pulper will stop when the shutdown timer has timed out. Do not add
additional waste when the unit is operating in the Empty cycle. If additional material needs
to be added after the empty cyce has started, push the Timed Stop switch at any time and
return to normal feeding.

2. Press the STOP button. Turn off the electrical power by turning the main power switch on the
remote control box to the OFF position.

3. Refer to page 14 for Maintenance instructions.

CLEANING

Cleaning requires only a few minutes daily, but must be done on a regular basis and proper facilities
must be available. NOTE: If daily cleaning schedules are not followed, the machine will become
unsightly and odors will develop. A hose with a good quality, lever-operated nozzle should be
available, preferably with hot water, for clean-up of both the machine and the surrounding area.

Cleaning Instructions

Shut down the machine per Shutdown Procedure, above.
WARNING: DISCONNECT ELECTRIC POWER SUPPLY AT MAIN CONTROL BOX; PLACE A TAG

AT THE DISCONNECT SWITCH INDICATING THAT YOU ARE WORKING ON THE CIRCUIT; AND
WAIT FOR THE PULPER DISK TO COME TO A COMPLETE STOP BEFORE PERFORMING ANY
CLEANING PROCEDURES.

1. Clean the pulper tank of any non-pulpable material. Use care, glass or other sharp items may
be present in the pulper.

2. Wash the interior of the tank with a hose, suitable brush, detergent and deodorant or other
cleaning solution. Be sure to clean the underside of the upper shell flange.

3. Using a hose with water pressure of 25 to 45 psig., wash down the waterpress screen and interior
walls of the waterpress and pulper tank. A long-handled, nylon bristle brush is recommended.
Take care to avoid spraying the chemical pump.

4. Wipe down the equipment exterior.

5. It is not necessary to dig out the plug of pulp remaining at the top of the waterpress screw. After
the machine has been cleaned, wash down the floor. Replace all removed parts. The system
is now ready to be started.

Cleaning Compounds

Cleaning compounds used with the WPS1200 waste system should combine five important features:
Detergency, disinfection, pH buffering, odor control and bio-degradability.

Consult your chemical supplier for recommendations.

–13–

MAINTENANCE

WARNING: DISCONNECT ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT /

TAGOUT PROCEDURES BEFORE CLEANING OR SERVICING.

MOTORS

Motors should be kept free of dirt, and ventilation openings must not be restricted. Drive motors are
equipped with zerk fittings and must be checked annually. Using a hand-operated grease gun with
Chevron SRI (Hobart Part Number: 103881-23), slowly dispense approximately one teaspoon in each
motor zerk by squeezing the grease gun handle once.

WATERPRESS DRIVE

The waterpress drive consists of a close coupled motor and speed reducer. The gears in the speed
reducer run in an oil reservoir that must be checked every three months. With the machine stopped,
remove the oil level plug. If the oil level is not high enough to drain out of the case, add a small quantity
of Mobil Gear Oil #629 (Hobart Part Number: 103881-72) until it just starts to run out of the hole.

WATERPRESS MOTOR

TROUGH OPENING

FEED TRAY

PULPER

PULPER MOTOR HOUSING

LID LATCH

WATERPRESS

CHEMICAL FEEDER PUMP

DISCHARGE CHUTE

FEED TROUGH

(BY OTHERS)

–14–

TROUBLESHOOTING

SYMPTOM POSSIBLE CAUSE POSSIBLE CORRECTIVE ACTION

Machine will not start. 1. Circuit breaker tripped at power supply. 1. Reset circuit breaker.

2. Power handle on main control box is Off. 2. Turn handle to On position.

3. Pulper cover not in proper position. 3. Put pulper cover in proper position.

4. Discharge chute lid not in proper position. 4. Put discharge chute lid in proper position.

5. No water or not enough water in machine. 5. See "No water or no water make-up."

6. Overload is tripped. 6. Reset overload.

No water or no water 1. Water supply off. 1. Turn water supply on.
make-up. 2. Drain valve open or leaking. 2. Close drain valve. Repair if leaking.

Pulper jammed. 1. Pulper overloaded. 1. Turn machine off at main control panel.

Clean out and restart.

2. Pulping disc jammed with scrap metal or 2. Turn machine off at main control panel.
heavy material. Remove metal or material. If material

cannot be removed, call Service.

Waterpress jammed. 1. Discharge chute outlet obstructed. 1. Turn machine off at main control panel.

Remove residual pulp.

2. Hardened plug in waterpress. 2. Remove hardened waste material.

3. Trash container is full and pulp is backing 3. Empty trash container and remove loose
up in discharge chute. pulp from discharge chute.

Will not drain or drains 1. Pulper full of unpulped material. 1. Run pulper until pulp has been processed.
very slowly. If it will not process the material, turn the

machine off and clean out the pulper tank.

2. Drain clogged. 2. Use water pressure to eliminate clog.

Excessive foaming in 1. Pulping of certain materials, such as 1. Add defoaming agent.
waterpress. glossy paper, cardboard, and potatoes 2. Drain machine and refill with fresh water.

will produce large quantities of foam. 3. Turn pulper off when not feeding machine.

2. Excessive deodorizer or detergent.

Too much water in tank. 1. Various problems. 1. Contact Hobart Service.

Slight clicking sound 1. Mechanical problem. 1. Contact Hobart Service.
when machine is
running.

Pulp coming out of 1. Screen clogged. 1. Clean waterpress screen.
waterpress is too wet. 2. Contact Hobart Service.

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SERVICE

Contact your local Hobart-authorized service office for any repairs or adjustments needed on this
equipment.

FORM 35393 (Oct 2014) PRINTED IN U.S.A.

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