40 Chapter 10 Maintenance & Spare Parts
Liebert.CRV Series Air Conditioner User Manual
Chapter 10 Maintenance & Spare Parts
This chapter introduces maintenance & spare parts of the Liebert.CRV air conditioner, including safety instructions,
spare parts, maintenance schedule, air filter check or substitution, condensate drain and condensate pump systems,
air-cooled condenser and drycoolers, electrical heaters, refrigeration circuit, dismantling the unit, regulation (EC) No.
842/2006 (F-gas), and unit diagnostic.
10.1 Safety Instructions
All maintenance operations must be carried out strictly observing the European and national accident prevention
regulations. We refer especially to the accident prevention regulations concerning electrical systems, refrigerators,
and manufacturing resources. Maintenance may be done to air conditioning equipment only by authorized and
qualified technicians.
To keep all warrantees valid, the maintenance must adhere to the manufacturer's regulations.
Warning
The work should be done in the system only when it is at standstill. Do this by switching off the air conditioner at the controller
and the main switch. Post a warning sign saying: ‘Do not switch on.’ Electrical components of device have to be switched off and
be checked that they are not under voltage.
Ignoring the safety instructions can be dangerous to persons as well as to the environment.
Soiled parts always cause a loss of performance and for switch or control devices can lead to the break-down of a
plant.
10.2 Spare Parts
Only original spare parts made by Emerson Network Power may be used. Using third-party material can invalidate
the warrantee.
Note:
1. When a faulty component is replaced, follow the relevant manufacturer instructions.
2. When the spare parts must be brazed, be carefully do not damage the internal parts (gaskets, seals, o-rings, etc.).
10.3 Maintenance Schedule
Monthly, quarterly, biannual and annual checks must be conducted according to the following guidelines.
All tasks and periods listed in Table 10-1 are regulations from the manufacturer and need to be documented in an
inspection report.
Warning
All these tasks should be carried out only by an authorized and trained technician. We recommend the Emerson Network Power
Customer Service.
