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EN/09.2019/G41 © STULZ GmbH – all rights reserved
cybercool 2 screw original insTrUcTions
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 is only to 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 chiller 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
** depending on environment, in the proximity of trees and in case of low positioning of the chiller, a half-yearly control is required.
7.2 Maintenance intervals
Component
Maintenance interval
half-yearly
yearly
every 5 years
Refrigerant circuit
Refrigerant charge
X
Sight glass
X
LP/HP switch
X
Safety valve
X
Compressor*
X
Crankcase heater
X
Oil level
X
Expansion valve
X
Air circuit
Condenser**
X
Fan
X
Water circuit
Tightness
X
Evaporator
X
Unit housing
Electrical box
X
Unit interior
X
* see also table on page
83.
