7
PVC (Polyvinyl Chloride) and CPVC
(Chlorinated Polyvinyl Chloride) are
vulnerable to attack by certain
chemicals. Polyolester (POE) oils
used with R-
refrigerants, even in trace amounts,
in a PVC or CPVC piping system will
result in stress cracking of the piping
and fittings and complete piping
system failure.
OPEN LOOP APPLICATIONS
Failure of the refrigerant-to-water
heat exchanger
chemical corrosion is excluded from
coverage under AAON Inc.
warranties and the heat exchanger
manufacturer’s warranties.
Some chemical coil cleaning
compounds are caustic or toxic. Use
these substances only in accordance
with the manufacturer’s usage
instructions.
instructions may result in equipment
Do not work in a closed area where
refrigerant or nitrogen gases may be
leaking.
A sufficient quantity of
vapors may be present and cause
injury or death.
UNIT HANDLING
To prevent injury or death lifting
equipment capacity must exceed unit
weight by an adequate safety factor.
Always test-lift unit not more than 24
inches high to verify proper center of
gravity lift point to avoid unit damage,
injury or death.
HAZARD
Failure to follow safety warnings
exactly could result in dangerous
operation, serious injury, death or
property damage.
Improper servicing could result in
dangerous operation, serious injury,
death, or property damage.
Before servicing, disconnect all
electrical power to the unit to
avoid shock hazard or injury from
rotating parts.
Lockout-Tagout procedures.
When servicing controls, label all
wires prior to disconnecting.
Reconnect wires correctly.
Verify proper operation after
servicing. Secure all service
panels.
To Next Page
Loading...
Need help?
General
