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724-746-5500 | blackbox.com
Page 126
724-746-5500 | blackbox.com
Appendix A: Forms
A.2 Periodic General Maintenance Checks and Services Checklist for Cold Row DX
Date: ____________________________ Prepared By: ___________________________
Model Number: ____________________________ Serial Number: __________________________
Item Number: ____________________________
Monthly
Filters: Blower Section: Condensate Drain:
Cleanliness. Blower turns. Drain is open.
Condensate pan safety switch
operates freely.
Miscellaneous:
Check water/glycol or chilled water circuit for air (bleed as required).
Humidifier and controls operate properly.
Semi-Annually
Check refrigerant charge (bubbles in sight-glass). Tighten electrical connections.
Check suction and discharge pressure. Check contacts on contactors for pitting.
Check glycol solution concentration in system. Clean the unit as necessary.
Clean coils. Test the glycol solution inhibiters
(flush if necesary).
Clean condensate pump.
Annually
Chilled water systems:
Inspect water glycol system for leaks and corrosion.
Conduct a complete check of all services listed above and clean unit’s interior.
NOTES: ____________________________________________________________________________________________
___________________________________________________________________________________________________
___________________________________________________________________________________________________
___________________________________________________________________________________________________
Signature: _______________________________
*** If factory assistance is required for any reason, provide the model number, serial number, and Black Box item number found
on the unit nameplate. This will speed the process and ensure accuracy of information. ***