Maintenance Strategies
A Strategy is described as…
A-A haphazard approach to solve a problem reactively.
B-A plan or course of action to solve your organization's problem/s
C-A list of actions created by the Board of Directors
B-A plan or course of action to solve your organization's problem/s
Should palm valve location be before or after the guide?
After
What should you be doing to rolls in storage to keep them (overall) in the best condition?
Regularly turn them
What are the two possible parts in a coater or sizer to meter the coating on a sheet?
Doctor blades or applicator rods
This is rarely the root cause of a problem because it doesn’t change without intervention.
What is the PLC program?
How often should you change your DST doctor holder loading tubes?
Every 12 months
What are the 5 S's of 5S?
Sort, Set in order, Shine, Standardize, Sustain
If an option, why are lexan headbox sheets typically used before switching to carbon fiber sheets?
To determine optimal machine direction headbox sheet length
As a general rule of thumb, dryer shell temperature should ramp up at approximately what rate? (degrees F / hour)
50
What causes vibration or failure in a rotary joint?
Misalignment
This is a PC tool that provides equipment status, alarm, and interlock information to support troubleshooting.
What is WindHelp?
What is the recommended blade angle for a wet end doctor?
20-25 degrees
What does PDCA stand for?
Plan, Do, Check, Act
Regardless of the RA requirement, all internal headbox surfaces must pass what test?
Cotton ball test
What are the two types of pressures in a press nip?
Hydraulic and Mechanical
What is the most abused roll on the paper machine?
Reel spool
Core lock measurements include vertical position, horizontal position, and this third measurement.
What is horizontal force?
How do we extract useful vibration source information from a complex time waveform?
FFT (fast Fourier Transform)
What does RCM stand for?
Reliability Centered Maintenance
0.5 to 1 inch ahead of the lead blade
Dryer dewatering has how much more cost than that of the press?
20x more
Press dewatering is 40x that of gravity
Dryer dewatering is 20x that of the press (800x that of gravity)
One of the main reasons for jumbo rolls "walking" down the storage rails
Outboard clearance too high between kitchen rails an reel spool housing
For effective unwind speed and tension control, it is necessary to accurately report the parent roll width, density, and this.
What is roll diameter?
What is the working wear dimension on a doctor blade?
3/8 inches
What percentage of failures can be prevented by just keeping the environment and equipment clean and carrying out inspection routes?
60%
How much station to station adjustment can you get with 3 inch spacing on a FlexLip Slice Lip?
0.010"
Increasing sheet temperature by 20 degrees Fahrenheit will increase exiting press solids by what percent?
1%
Often, what is the easiest way to improve jumbo roll bouncing on a reel?
Locking the secondary arm loading roller from rotating
Rider roll cylinders have this component to hold the roll from falling if electric or hydraulic power is lost.
What are counter-balance valves?
How often should you replace the high pressure water hoses on a waterjet tail cutter?
26 weeks