In case you do not have the O&M Manual of your internal mixer, here is a template chart of recommended maintenance schedule. You may want to adopt this chart with some customization.

1. Page 1 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
BEDPLATE
Are the latch bolts tight?
Are the foundation bolts tight?
Are the frame foot bolts tight?
Has the condition of hydraulic hoses at latch changed?
MIXING CHAMBER (BODY) DROP DOOR
Dust Stops
Any leakage? Is the area clean?
Is their adequate oil supply and area wet?
Measure the wear externally
Latch
Check stroke - max mm
Visual check of operation (take trial if required)
Fastener tightness - check
Check for leakage of cylinder. & hoses
Wear on contact surfaces
Accumulation of polymer - range

2. Page 2 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
Discharge Door
Check wear & fit
Visual check of operation (take trial if reqd)
Speed of operation - sec. open, sec. close
Gap - doortop to support ( to )
Hinge shaft bearings - check for wear
Check ground cable
Rotor Bearings
Check temperature
Vertical movement of rotors
Seals at bearings - check lube line - check for loose
fittings & breaks
Frame Side
Check side to frame bolts for tightness
Check frame foot bolts for tightness
Check lip of sides for wear
Check wear on sides - (Rotor tip to side)

3. Page 3 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
MIXER HOPPER
Check door edge seal & replace if needed
Visual check of operation
Check air leaks past piston
Check all fasteners
Check level of wt. in relation to side
Replace weight pins
Check safety locks (wt. stop pin, doorstop pin) replace
if damaged, worn or inoperable
Check feed door operation
GEARBOX
Check for noise
Check for clean filter
Check air breather & clean
Check tooth contacts
Check bearing temperature

4. Page 4 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
LUBRICATION
Hopper
Grease hinge shaft (auto type)
Grease floating wt. pin (manual type)
Grease piston rod gland (auto type)
Oil air line lubricator
Main Bearings
Grease bearing seals (auto type)
NOTE: Where lubrication is by automatic lubricator,
the reservoir must be filled daily.
Drive
Check oil level
Check oil quality & replace if needed
Couplings
Low speed (under 100 RPM) use grease only
Check high speed - use grease - check
Connecting Gears (if applicable)
Check oil level & add as needed
Flush & refill

5. Page 5 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
DUST STOPS - METERING SYSTEM
Check flow rate
Check pressure
Check trouble indicator
Check alarms operating
Pump to point system
Check refill cover (keep in place)
HYDRAULIC SYSTEM
Check pressure gauge & Temperature gauge
Clean oil filter, flush & refill reservoir
Check level of oil
Check accumulator pressure
Inspect oil lines for leakage
Inspect motor coupling
Check oil fill cover (keep covered)
Check for noisy operation
Inspect actuator for leakage

6. Page 6 of 6
INTERNAL MIXER WITH 3-ZONE TEMPERATURE CONTROL UNIT (TCU)
RECOMMENDED MAINTENANCE SCHEDULE SHIFT DAILY WKLY 3M 6M YEARLY
MAIN MOTOR
Check bearing temperature
Check oil level in bearings
Check foot bolts for tightness
3-ZONE TCU
Check flow rate
Check trouble indicator
Check alarms operating
Check rate of temp rise - +/- _____°C PER MIN
Check for any noise
Check reservoir & refill if necessary
Check refill cover (keep in place)