Vertiv Liebert Drycooler, Installer/User Manual, Page: 63 / 102

11 PREVENTIVE MAINTENANCE CHECKLIST
Source: DPN003119, Rev 1
Inspection Date Job Name
Indoor Unit Model # Indoor Unit Serial Number #
Drycooler Unit Model # Drycooler Unit Serial #
Room Temperature/Humidity ° % Ambient Temperature °
Good maintenance practices are essential to minimizing operation cost and maximizing product life. Read and follow all
applicable maintenance checks listed below. At a minimum, these checks should be performed semi-annually. However,
maintenance intervals may need to be more frequent based on site-specific conditions. Review the unit user manual for
further information on unit operation. We recommend the use of trained and authorized service personnel, extended service
contracts, and factory-certified replacement parts. Contact your local sales representative for more details.
Check all that apply:
c Coil clean and free of debris
c Motor mounts tight
c Piping support/clamps secure
c Check/re-torque wire connections
c Check contactors for pitting (replace if pitted)
c Check fuses
c Verify fan operation
c Check surge-protection device status-indicator lights (if equipped)
c Ambient thermostat settings ______ ______ ______ ______
c Glycol level
c Glycol solution __________________%
c Water/glycol solution is flowing continuously and isclean and free of debris
c Water treatment plan is established and followed for open cooling tower application
c Check glycol lines for signs of leaks and repair as leaks are found
c Motor amp draw
#1 L1 L2 L3
(L1 and L2 on Fan Speed Control Motor)
#2
L1 L2 L3
#3 L1 L2 L3
#4 L1 L2 L3
#5 L1 L2 L3
#6 L1 L2 L3
#7 L1 L2 L3
#8 L1 L2 L3
11 Preventive Maintenance Checklist
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