NOTICE
Risk of improper maintenance. Can cause equipment damage.
All maintenance must be performed only by authorized properly trained and qualified
personnel.
Ignoring safety instructions is dangerous. Soiled parts cause a loss of performance and, for
switch or control devices, can lead to the breakdown of the unit performance and operation.
13.2 Facility Fluid and Piping Maintenance forWaterandGlycolSystems
Maintaining facility water and glycol quality is required throughout the life of the coolant fluid piping
system. Fluid and piping system maintenance schedules must be established and performed. A coolant-
fluid maintenance program must be established that will evaluate fluid chemistry and apply necessary
treatment. The complexity of water/glycol solution condition problems and the variations of required
treatment programs make it extremely important to obtain the advice of a competent and experienced
water-treatment specialist and follow a regularly-scheduled coolant-fluid system-maintenance program.
Perform periodic inspections of the facility and the unit coil and/or heat exchanger and coolant-fluid
piping system for leaks and visible damage.
13.3 Glycol Solution Maintenance
It is difficult to establish a specific schedule of inhibitor maintenance because the rate of inhibitor
depletion depends upon local water conditions. Analysis of water samples at the time of installation and
through a maintenance program should help to establish a pattern of depletion. A visual inspection of the
solution and filter residue is often helpful in judging whether active corrosion is occurring.
The complexity of water/glycol solution condition problems and the variations of required treatment
programs make it extremely important to obtain the advice of a competent and experienced water-
treatment specialist and follow a regularly-scheduled coolant-fluid system-maintenance program. It is
important to note that improper use of water treatment chemicals can cause problems more serious than
using none. Proper inhibitor maintenance must be performed in order to prevent corrosion of the glycol
system. Consult the glycol manufacturer for testing and maintenance of inhibitors. Do not mix products
from different manufacturers.
13.4 Spare Parts
Only original spare parts made by Vertiv™ may be used. Using third-party material can invalidate the
warranty. When making seeking technical assistance, always refer to the component list supplied with the
equipment, and specify the model number, serial number and, if available, the part number.
NOTE: When replacing a faulty component, follow the relevant manufacturer instructions.
NOTE: When the spare parts must be brazed, be careful not to damage the internal parts (gaskets,
seals, O-rings,etc.).
13.5 Maintenance Schedule
Conduct monthly, quarterly, biannual and annual checks according to the following guidelines.
All tasks and time periods listed here are the manufacturers’ regulations and must be documented in an
inspection report.
Vertiv | Liebert CRV Installer/User Guide | 134
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