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FTM-L SERIES
SINGLE OR TWIN DIRECT STEAM MIXER KETTLE
COMPLETE WITH HYDRAULIC POWER TILT BRIDGE
PARTS AND SERVICE MANUAL
EFFECTIVE SEPTEMBER 19, 2014
The Company reserves the right to make substitution in the event that items specied are not available.
ERRORS: Descriptive and/or typographic errors are subject to correction.
44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone: (802) 658-6600 Fax: (802) 860-3732
Superseding All Previous Parts Lists.
MARKET FORGE INDUSTRIES
www.mi.com
P/N 14-0376 Rev A (9/14)
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TABLE OF CONTENTS
TROUBLESHOOTING ..................................................................3
MAINTENANCE & REPAIR .............................................................5
WIRING DIAGRAM .....................................................................7
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TROUBLESHOOTING
EXTREMELY SLOW COOKING TIME
If the cooking time is abnormally slow then the difculty
may be due to insufcient steam pressure. First deter-
mine that pressure on incoming stream line at kettle is
with in 15 PSI of rated kettle pressure. Note that pressure
approaching the rated kettle pressure are liable to set off
the safety relief valve. If required pressure is available
to kettle, then possibly volume of steam is not sufcient.
Minimum 3/4” pipe size is required to the kettle but if the
steam generating source is at a great distance from the
kettle, larger pipe will be required. Finally, the core of the
steam ow will require disassembly and inspection.
PUMPS: PUMP MAKES EXCESSIVE NOISE
1. Check for vacuum leaks in the suction line.
2. Check alignment with drive mechanism. Misalignment will cause wear and subsequent high noise
level in operation.
3. Check compatibility of uid being pumped against
manufacturers recommendations.
4. Relief or unloading valve set to high.
5. Aeration of uid in reservoir, return lines above uid
level.
6. Reversed rotation.
7. Plugged reservoir lter breather.
EXCESSIVE PUMP WEAR
5. Abrasive dirt in the hydraulic oil being circulated
through the system.
6. Oil viscosity too low.
7. System pressure exceeds pump rating.
8. Pump misalignment.
9. Air being drawn in through inlet of pump.
DIRTY OIL
1. Components not properly cleaned after servicing.
2. Inadequate screening in ll pipe.
3. Air breather left off.
4. Filter dirty or ruptured.
SOLENOID VALVE: FAILS TO OPERATE
1. Is there an electrical signal to the solenoid or operating device? Is the voltage too low. Check with the
volmeter, test light in an emergency.
2. Has foreign matter jammed the main spool? Remove
en caps and see that main spool is free in its move-
ment. Remember that there will be a quantity of uid
escaping when the cap is removed and provide a
container to catch it.
8. Oil viscosity too high or operating temperature too
low.
9. Loose or worn pump parts.
10. Pump being driven in excess of rated speed.
11. Air leak at pump shaft seal.
12. Oil level too low and drawing air in through inlet pipe
opening.
13. Air bubbles in intake oil.
PUMP PARTS INSIDE HOUSING FAIL TO OPERATE
1. Seizure due to lack of oil.
2. Excessive system pressure above maximum pup rating.
3. Excessive torquing of housing bolts.
4. Solid matter being drawn in from reservoir and
wedged in pump.
3. Are solenoids improperly interlocked so that a signal is provided to both units simultaneously? Put test
light on each solenoid lead in parallel and watch for
simultaneous lighting. Check electrical interlock. this
condition probably burns out more solenoids then
any other factor.
4. Is uid media excessively hot? Check for localized
heating which may indicate an internal leak, Check
reservoir temperature and see if it is within machine
specications.
5. Voltage too low? If voltage will not complete the stroke
of alternating current (AC) solenoid will burn out coil.
6. Signal to both solenoids of a double solenoid valve simultaneously. One or both of the solenoids will be unable to complete their stroke and will burn out. Make
certain the electrical signal is interlocked so that this
condition cannot exist.
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TROUBLESHOOTING
7. Mechanical damage to leads. Short circuit, open connections, etc.
8. Tight spool or other mechanical parts of the valve being actuated can prevent the solenoid from completing its stroke and subsequently burning out.
9. Wrong voltage or frequency will either prevent operation, because of inadequate capacity to handle the
load with the lower voltage or burn out the oil, because of improper winding and excessive voltage.
OVERHEATING
1. Continuous operation at relief setting.
a. Stalling under load etc.
b. Fluid viscosity too high or too low.
2. Excessive slippage or internal leakage.
a. Fluid viscosity too low.
3. System relief valve set too high.
4. Power unit ambient temperature too high.
MOISTURE IN OIL
1. Cooling coils not below uid level.
2. Moisture in cans used to replace uid in tanks.
3. Extreme temperature differential in certain geographical locations.
FOAMING OIL
1. Return of tank line not below uid level.
2. Fluid contaminated with incompatible foreign matter.
3. Suction leak to pump aerating oil.
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MAINTENANCE & REPAIR
SUGGESTIONS:
4. Set up a lter maintenance schedule and follow it dili-
gently.
5. Inspect lter elements that have been removed from
the system for signs of failure which may indicate that
the service interval should be shortened and of impending system problems.
6. Do not return to the system any uid which has leaked
out.
7. Always keep the supply of fresh uid covered tightly.
8. Use clean containers, hoses and funnels when lling
the reservoir. Use of a lter cart when adding oil is
highly recommended.
9. Use common sense precautions to prevent entry of
dirt into components that have been temporarily removed from the circuit.
10. Make sure that all clean-out holes, ller caps and
breather cap lters on the reservoir are properly fastened.
11. Do not run the system unless all normally provided
ltration devices are in place.
12. Make certain that the uid used in the system is of a
type recommended by the manufactures of the system or components.
13. Before changing from one type of uid to another (pe-
troleum base oil to a re resistant uid) consult component and lter manufacturers in selection of uid
and the lters that should be used, Also consult the
publication “Recommended Practice fro the use of
Fire Resistant Fluids for Fluid power Systems” published by the National Fluid Power Associatetion.
PREVENTIVE MEASURES:
How to keep your equipment’s hydraulic system from running too hot.
1. Set up regular schedule for checking the oil temperature, appearance, smell and feel. Change oil as recommended by the equipment manufacturer.
5. Start a cold pump or motor on hot oil by jogging
just enough to draw the hot oil into the component.
Then wait a few minutes to allow the temperatures
to equalize in all the pumps parts. Repeat until the
temperature on the outside of the pump ios the same
as that on the piping.
6. Keep your equipment clean. A thick layer of dirt acts
as insulation. It will prevent the hydraulic system from
extracting heat.
7. On hot days and in hot climates check and change
the oil more frequently. Be sure to use an oil recommended for hot weather operation by the equipment
manufacturer or oil supplier.
MAINTAINING PROPER OIL TEMPERATURE:
Hot oil in you equipment’s hydraulic system is out of the
primary causes of poor operation, component failure and
down time. Here are come pointers on maintaining proper
oil temperature.
The oil in you hydraulic system was designed for opera-
tion within a specied temperature range. You may be
able to run it at hotter temperatures for short periods of
time, intermittently, without bad effects. If you run continuously with oil that’s too hot, your equipment will operate
poorly and eventually key components will fail and halt
your unit.
When is hot too hot?
“Hot oil” os a relative term. In most cases, 120OF, at the
reservoir is considered an ideal operating temperature.
Always take an oil temperature reading at the reservoir,
not at a component or any of the piping.
Oil that has been running too hot will look darker and feel
thinner than new oil. It will also smell burnt. Chance are
it will contain more contaminants, because hot oil lead to
accelerated wear of component parts.
Measuring oil temperature
A thermometer is mounted on the reservoir. Make it a
habit to check the thermometer periodically, after the unit
had been running for more then an hour.
2. Be prompt about removing, checking and repairing
or replacing valves, pumps or other components that
are running hot.
3. If relief or ow-control valves are running hot, check
and adjust their settings. Follow your equipment owner’s manual.
4. Break in new components gradually. New, close-tting parts expand at different rates and are especially
prone to seize when they get too hot.
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MAINTENANCE & REPAIR
Determine what is "running hot"
To determine which components are running hot and
overheating the oil, feel the outlet ttings and lines at the
valves, pumps and motors. If the oil is normal going into
a component but hot coming out that could be one of the
trouble spots.
A sticking valve can cause excessive heat. If a spool does
not return promptly to the neutral position, the pump ow
will be dumped continuously. This builds up heat rapidly.
If a relief valve is set too low, part of the oil will be dumped
across the valve every cycle. This too generates excessive heat. Even when all valves are set properly, they may
not be operating well because of worn orices or seals.
Always remove and check the hot components rst be-
fore the others.
ELECTRICAL MOTORS:
Lubricate as recommended by the motor manufacturer.
FILTERS
Change or clean as required or as indicated on lters supplied with visual indicators.
Filers must be maintained. The key to good ltration is
lter maintenance. A machine may be equipped with the
best lters availably and they may be positioned in the
systems when they do the most good; but, if the lters are
not take care of and cleaned when dirty will be a waste
of time and money. A lter which get dirty after one day of
operation and if cleaned 29 day later gives you 29 days
of non-ltered uid.
RESERVOIRS
Maintain oil level at all times. The oil should be checked
after the rst 100 hours and verify that the class of oil
meet the requirements of the pump being used. Change
the oil every 1,000 to 2,000 hours depending on the application and operating environment.
RECOMMENDED SPARE PARTS
Spare lter elements should be purchased with the unit,
and be available during the start-up operation, Other
spare parts may be required, and are a function of the
duty cycle of the hydraulic system, operation environment
and the acceptable down time of the unit.
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WIRING DIAGRAM
CONSOLE
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WIRING DIAGRAM
WATER METER
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