CYBERHANDLER 2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
EN/05.2019 © STULZ GmbH – all rights reserved
33
Activity
Action, if required
Maintenance Interval
1
month
3
month
6
month
12
mont
EC FANS
Check Blades and housing for con-tamina-
tion, damage and corrosion
Clean and replace
x
Check impeller for wear/deposits/corrosion
and damage
Clean and replace
x
Check bearings for noise
Replace
x
Vibration test
Clean/rebalance impeller/replace
x
ADIABATIC SYSTEM
a
Check regulating and control devices (valves,
sensors…) for function
Repair / Replace
x
Check automatic drainage system for
function
Repair / Replace
x
Check all components for contamination,
damage and corrosion
b
Clean/ Repair / Replace
x
Check plate heat exchanger for dirt, scaling
and biofouling
Microbiological testing / Cleaning
x
Check spray nozzles for dirt, scaling and
biofouling
Microbiological testing / Cleaning
x
Check sump for dirt, scaling and biofouling
Microbiological testing / Cleaning
x
Check piping for dirt, scaling and biofouling
Microbiological testing / Cleaning
x
Check recirculation pump for dirt, scaling
and biofouling
Microbiological testing / Cleaning
x
Check pump bearings for noise and
vibrations
c
Repair / replace
x
Check water level control for function
Repair
x
Check Siphon function and water level of
siphon
Clean and top-up
x
Check water filter for dirt, scaling and
biofouling
Microbiological testing / Cleaning
x
a Maintenance to be carried out when adiabatic system is in use only. Maintenance intervals are given when RO treatment is used. If no
RO treatment is used, maintenance intervals must be divided by 2. If no water treatment is used, maintenance interval must be shortened
b this checking must be performed before the winter season (when adiabatic system is not in use) and during the season with the most
common demand.
c Internal parts of the pump are maintenance-free. In particular motor has greased-for-life bearings
REFRIGERANT CIRCUIT
Check circuit for leakage
Check circuit for leakage
x
Check sight glass for refrigerant quan-tity
and quality
Check sight glass for refrigerant quan-tity and
quality
x
Check HP/LP switch function
Check HP/LP switch function
x
Check compressor for damage and corrosion Check compressor for damage and corrosion
x
Check pressure relief valve of com-pressors
Check pressure relief valve of com-pressors
x
Check check valve of compressor
Check check valve of compressor
x
Check roller bearing for noise
Check roller bearing for noise
x
Check crankcase heater
Check crankcase heater
x
Check oil level
Check oil level
x
Check mechanical function of expan-sion
valve
Check mechanical function of expan-sion
valve
Check control module of the valve
Check control module of the valve
x