Key To Symbols And Safety Instructions; Key To Symbols; Safety - ComfortStar 18 Installation Manual

1 KEY TO SYMBOLS AND
SAFETY INSTRUCTIONS

1.1 Key to Symbols

Warnings in this document are identified by a
warning triangle. Keywords at the start of a
warning indicate the type and seriousness of the
ensuing risks arising from failure to take
measures.
This symbol indicates important information
where there is no risk to people or property.
The following keywords are defined and can be used in
this document:
DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor to moderate injury.
NOTICE is used to address practices not related to
personal injury.

1.2 Safety

Important - This document contains a wiring diagram and
service information. This is customer property and is to
remain with this unit. Please return to service information
pack upon completion of work.
CAUTION
This information is intended for use by
individuals possessing adequate backgrounds
of electrical and mechanical experience. Any
attempt to repair a central air conditioning
product may result in personal injury and/or
property damage. The manufacturer or seller
cannot be responsible for the interpretation of
this information, nor can it assume any liability in
connection with its use.
WARNING
HAZARDOUS VOLTAGE!
Failure to follow this warning could result in
property damage, severe personal injury or
death. Disconnect all electric power, including
remote disconnects before servicing. Follow
proper lockout/tagout procedures to ensure the
power cannot be inadvertently energized.
REFRIGERANT OIL!
Any attempt to repair a central air conditioning
product may result in property damage, severe
personal injury, or death.
These units use R-410A refrigerant which operates
at 50% to 70% higher pressures than R-22. Use
only R-410A approved service equipments. Refrig-
erant cylinders are painted a "Rose" color to
indicate the type of refrigerant and may contain a
"dip" tube to allow for charging of liquid refrigerant
into the system. All R-410A systems use a POE oil
(VG74 or equivalent) that readily absorbs moisture
from the atmosphere. To limit this 'hygroscopic"
action, the system should remain sealed whenever
possible. If a system has been open to the
atmosphere for more than 4 hours, the compressor
oil must be replaced. Never break a vacuum with
air and always change the driers when opening the
system for component replacement.
HIGH CURRENT LEAKAGE!
Failure to follow this warning could result in proper-
ty damage, severe personal injury, or death. Earth
connection is essential before connecting electrical
supply.
SERVICE VALVES!
Failure to follow this warning will result in abrupt
release of system charge and may result in person-
al injury and/or property damage. Extreme caution
should be exercised when opening the Liquid Line
Service valve. Turn valve stem counterclockwise
only until the stem contacts the rolled edge. No
torque is required.
BRAZING REQUIRED!
Failure to inspect lines or use proper service tools
may result in equipment damage or personal injury.
If using existing refrigerant lines make certain that
all joints are brazed, not soldered.
CAUTION
CONTAINS REFRIGERANT!
Failure to follow proper procedures can result in
personal illness or injury or severe equipment
damage. Systems contain oil and refrigerant
under high pressure. Recover refrigerant to
relieve pressure before opening a system.
GROUNDING REQUIRED!
Failure to inspect or use proper service tools
may result in equipment damage or personal
injury. Reconnect all grounding devices. All parts
of this product that are capable of conducting
electrical current are grounded. If grounding
wires, screws, straps, clips, nuts, or washers
used to complete a path to ground are removed
for service, they must be returned to their
original position and properly fastened.
HOT SURFACE!
May cause minor to severe burning. Failure to
follow this caution could result in property
damage or personal injury. Do not touch the top
of the compressor.
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