Rexnord 1874, Инструкция по эксплуатации

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CLEANING
REPAIR AND
REPLACEMENT
CLEANING
In many applications, rapid build-up of grease, dirt, grit,
sand, spilled syrup and beverage can occur. These result in:
1. Soiling and damage to the conveyed product.
2. Increased work demands for the chain and motor.
3. Accelerated sprocket tooth wear.
4. Conveyor pulsation and wear.
5. Excessive chain wear on the flight and in the joint areas.
6. Rapid wear of the wear strips.
Frequent cleaning of the chain and conveyor frame is
advised. Such agents as steam, warm water and soap are
commonly used. Many times combined "cleaners/lubricants"
are applied continuously. Strong caustic agents used with
metal chains should not be used with plastic chains. Always
rinse cleaning agents completely off of chain and conveyor
frame. When excessive amounts of syrup or other liquids,
broken glass or debris accumulate, cleaning will be required
on a regular basis to remove these undesirable materials. It
is advisable to have operating personnel keep brushes and
cleaning solutions nearby to remove broken glass and
excessive spillage.
CAUTION: ALL cleaners and lubricants must be
compatible with chain and conveyor materials. See
Page 13, Multiflex.
INSPECTION
In the course of conveyor operation, periodic inspection of
the chain, sprockets and system is required to detect faults
and make repairs before serious damage occurs. the
important thing is to set up a regular inspection and
maintenance schedule.
CHECKLIST
1. Look for unusual wear patterns on the chain.
2. Inspect chain for lack of top surface flatness.
3. Check for excessive gap between flights due to jam-up or
overload.
4. Pulsating, jerky chain operation indicates poor lubrication
or a conveyor obstruction.
5. Check dead-plate and turnable clearance.
6. Examine sprockets for signs of excessive wear.
7. Examine sprockets for signs of dirt build-up in tooth
pockets.
8. Check for sprocket guide ring wear and possible chain
misalignment.
9. Check the ways and wear strips for excessive wear.
10. Inspect lubrication system for proper operation.
11. Check the inside of curves and the supporting conveyor
frame for excess heat build-up which may indicate an
obstruction in the curve or a high friction area.
12. If return support rollers are used, check to insure rollers
are free turning.
REPAIR AND REPLACEMENT
Any malfunctions found during an inspection usually stem
from one or more of the following conditions:
1. Severe overloads, jam-ups or wedging of broken glass or
crowns.
2. Severe back-flexing of chain on the return carrying ways.
3. Poor lubrication or no lubrication.
4. Interference and obstruction.
5. Worn sprockets.
6. Poor conveyor design.
7. Badly worn or damaged chain.
These causes should be corrected to avoid future problems.
INSPECTION
Chain and sprockets should be replaced when:
1. The chain measures approximately 123 inches in 120
flights for 843 and 1843 chains; in 40 flights for 2500
chains; in 61 pitches for 1700, 1701, 1701TAB and 1702
chains; and in 80 flights for all other chains.
2. The chain jumps the sprocket.
3. The flights have worn to about one-half the original
thickness.
4. The conveying surface becomes uneven through wear.
5. The thrust surface of sideflexing chains wears away and
exposes the rivet or other metal parts which may cut into
wear strips or other conveyor component.
6. The sprocket teeth develop a hooked profile or the chain
tends to "hang up" on the sprocket teeth.
These suggestions on chain and conveyor care serve as a
guide toward maintaining continuous, trouble-free operation.
Implementation of a conscientious programmed
maintenance schedule will lead to many productive hours of
conveyor operation.
INSTALLATION
AND
MAINTENANCE
Re
x
®
Multifle
x Chains
Rex ® Engineering Manual MF-18