Liebert DS user manual Startup Checks Inspection With Panels Removed and Disconnect Off

Initial Startup Checks and Commissioning Procedure for Warranty Inspection

11.1Information for Warranty Inspection—Remove Power From Unit Disconnect

Complete the following items on the warranty inspection form:

•Installer and address

•Owner and address

•Site Contact name and phone

•Installation date

•Indoor unit model and serial number

•Outdoor unit (condenser or drycooler) model and serial number

•Condition of unit when received

•Is there a freight damage claim in process?

•Have manuals been kept with unit?

•Is the air product connected to site monitoring or switchover controls?

•Provide model and serial of connected controls for switchover controls

11.2Startup Checks Inspection With Panels Removed and Disconnect Off

1.Check all internal piping clamps and tighten or secure if needed.

2.Check field piping for proper support

3.Check unit belts for correct tension and alignment.

4.Check unit electrical connections and tighten or secure if needed. Check control plugs and Mate N’ Loc connections to the control boards and components.

5.Check all major components such as compressors, reheats, humidifiers and motors that may have loosened during shipping.

6.Remove shipping blocks from compressor(s) / adjust spring tension.

7.Remove all debris, tools and documents from unit area.

8.Record main fan horsepower and voltage from nameplate, record belt size, motor sheave and fan pulley.

9.Record filter size and quantity

10.Record piping size for discharge and liquid lines,.

11.Check piping for proper traps including inverted traps on condensers.

12.Record total equivalent length for discharge and liquid piping.

13.Record compressor(s) model and serial number.

14.Record unit configuration and verify with the startup document.

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