Care And Maintenance - Carrier 50CJ Serie Installations-, Betriebs- Und Wartungsanleitung

29 - CARE AND MAINTENANCE

Before working on the unit, disconnect it from its electrical power source. For units equipped with orange terminals, raise all the orange
breaking devices and cut the 2 circuit breakers.
- Working on the compressor:
• The compressor is fastened to the platform by four dia. 8 mm screws.
Warning: Do not tighten these screws to a torque of more than 13 Nm.
If you do not have a torque wrench, tighten them until they are snug then tighten a further ¾ turn.
Recommendations:
Take the operating readings and perform the checks (in the table in section 27) at least once a year.
To ensure your unit runs smoothly and to obtain service under the warranty, take out a maintenance contract with your installer or an
approved maintenance company.
With the system running, check it thoroughly for any abnormal visual signs or noises.
Make sure there are no traces of oil around the unit.
Specific details and mandatory checks relating to the use of refrigerant fluid
In accordance with Regulation (EC) No. 842/2006 on certain greenhouse gases.
R410A refrigerant fluid is a gas which has the following impact on the environment:
1/ No impact on the ozone layer: ODP (Ozone Depletion Potential) = 0.
2/ Impact on the greenhouse effect: GWP (Global Warming Potential) = 2088.
- Users must have units containing over 3 kg of refrigerant periodically checked for leaks by qualified personnel (2 kg in France,
decree and order of 7 May 2007). Regardless of the refrigerant charge in your system, CARRIER requires that this check be
carried out in order to keep your system in good working order.
- Users of any system containing over 3 kg of refrigerant (2 kg in France) are required to keep a log of the quantities and types of
refrigerants used, added or recovered, and to include the dates and results of leak checks. The name of the technician and his
company must also be recorded. The manufacturer strongly recommends keeping such a log even if the refrigerant charge of
your system does not require one.
- A leak check must be carried out one month after any leak repairs.
- Users are responsible for collecting used refrigerant and having it recycled, regenerated or destroyed.
Mandatory check each year
Detection of leaks on the refrigerating circuit.
Clean the coil:
- Remove the unit's cover (see procedure in electrical connection section)
- Using a vacuum cleaner, carefully clean the coil and the entire blower compartment.
- Put the cover back in place.
Clean the unit's pan.
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