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WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury
or loss of life. Installation and service must be performed by a qualied installer or service agency.
WARNING
Electric shock hazard. Can cause injury or death. Before attempting to perform any service or
maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple
power supplies.
WARNING
To prevent serious injury or death:
1- Lock-out/tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector maintenance), disable power to blower, remove fan belt
where applicable, and ensure all controllers and thermostats are set to the “OFF” position before performing
maintenance.
3- Always keep hands, hair, clothing, jewelry, tools, etc., away from moving parts.
CAUTION
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care
while handling this equipment and wear gloves and protective clothing.
1. Safety Precautions
Prior to beginning work on systems containing ammable refrigerants, safety checks are necessary to ensure the risk of
ignition is minimized.
• Work in a controlled environment to minimize the risk of a ammable gas or vapor being present.
• All maintenance sta and others working in the local area must be informed on the nature of work being completed
• Avoid working in conned spaces.
• Section o the area around the work space.
• Ensure the conditions within the area have no ammable materials.
1.1. Refrigerant Presence
• Use a refrigerant detector to verify the work area does not have ammable substances
• Ensure the leak detection equipment is suitable for use with ammable refrigerants (i.e. no sparking, adequately
sealed or intrinsically safe)
1.2. Fire Extinguisher
If any hot work is required on the refrigeration equipment or any associated parts, appropriate re extinguishing equipment
must be immediately available (such as a dry powder or CO2 re extinguisher adjacent to the charging area).
1.3. No Ignition Sources
WARNING
Do not use any sources of ignition while servicing the refrigeration system. Pipe work that contains or has contained
ammable refrigerant could lead to risk of re or explosion if exposed to sources of ignition.
• Prior to servicing the unit, survey the area around the equipment to ensure there are no ammable hazards or
ignition risks.
• Keep all possible ignition sources (including cigarette smoking) away from the site during installation, repair, or
removal and disposal of refrigerant.
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