Page 4-1
CORNERMATIC PLUS
MAINTENANCE
4. MAINTENANCE
Assembly drawings of the equipment, along with electrical schematics which are helpful in
servicing our equipment, are provided in the back sections of this manual. Exact component
data is not always available from our suppliers, and some parts may be modified by Mestek
Machinery. We recommend that you contact our Service Department to ensure that you use
proper replacement components. Please take time to become familiar with the maintenance
section, which can speed servicing of your equipment.
Precision components, skilled assembly and sophisticated engineering enable Mestek
Machinery to produce machinery capable of long, trouble-free operation. However, few
machines, if any, are totally exempt from the wear and tear resulting from heat, friction, dirt,
and neglect. Even with good maintenance, parts eventually wear out and have to be replaced.
However, regularly scheduled maintenance will lead to longer machine life. Because your new
machine requires minimal maintenance (and because internal damage may remain hidden for
some time), it is easy to put off maintenance procedures. Without maintenance, damage is
almost certain to occur, even though the system appears to be operating satisfactorily. Too
often, this results in machine failure.
A. TORQUE VALUES FOR GENERAL ASSEMBLY
The torque chart value (Table 1 and 2) are provided for reference when performing general
assembly of various components. These values should be used only if torque values are not
otherwise specified for a particular assembly. Refer to the associated assembly drawings for
assemblies or other component assemblies which may require special torque specifications.
The following conditions must be observed when using the general assembly torque values:
• Joints are assumed to be metal and rigid. Do use these values where gaskets or
compressed material may be damaged by over-torquing.
• During disassembly, note bolt head markings and always reassemble the same hardware
or equivalent new hardware in the correct locations.
• As a general rule, when reusing previously removed hardware, apply the minimum values
from the table.
• Reduce the table values by 20% when assembling plated hardware or phosphate coated
hardware.
• Reduce table values by 30% when molykote, white lead, or similar mixtures are used to
lubricate threads.
• Reduce the table values by 35% when torquing jam nut (thin nuts).
• Special use column values in the table are for cap-screws in gray iron castings when
thread length engagement is at least 1.5 times the cap-screw diameter.
H. WEISS MACHINERY & SUPPLY
H. WEISS MACHINERY & SUPPLY
PHONE: (718) 605-0395 - www.hweiss.com
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