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cyberlab original instructions
EN/02.2018/G17F © STULZ GmbH – all rights reserved
All maintenance work has to be carried out under strict compliance with the country-specific accident pre-
vention regulations. In particular we refer to the accident prevention regulations for electrical installations,
refrigerating machines and equipment. Non-compliance with the safety instructions can endanger people
and the environment.
Maintenance work must only be carried out on the units by authorized and qualified specialist staff.
Procedure instructions
• carry out work on the system only when it is shut down.
• switch off the A/C unit at the controller and at the master switch.
• display a „DO NOT SWITCH ON“ warning sign.
• switch off power conducting cables to the unit and secure them against being switched on again.
• check to ensure that they are in the de-energized state.
7. Maintenance
7.1 Safety instructions
7.2 Maintenance intervals
Component
Maintenance interval
quarterly
half-yearly
yearly
Refrigerant circuit
Refrigerant charge
X
HP switch
X
Sight glass
X
Compressor
X
Expansion valve
X
Air circuit
Heat exchanger
X
Fan
X
Air filter
X
Unit housing
Electrical box
X
Unit interior
X