Graham
Repair
Graham Drive Diagnostics, Repair & Industrial Support
Common Graham Applications
01.
Commercial HVAC
02.
Water
Systems
03.
Pump
Control
04.
Industrial
Plants
About Graham Drive Systems
Graham drive systems, including equipment labeled Danfoss Graham, have been used in motor control applications where reliable speed regulation, energy efficiency, and consistent system performance are essential to daily operations.
Control Concepts Dallas supports legacy Graham and Danfoss Graham equipment used throughout commercial HVAC, water and wastewater facilities, pumping systems, industrial plants, and other demanding motor control environments.
Our technicians support legacy Graham and Danfoss Graham drive equipment used in HVAC, pumping, water and wastewater, and other motor control applications. We can help troubleshoot systems that remain in active operation, including equipment that has become difficult to repair, replace, or modernize.
Equipment we service includes:
01.
VLT® 2800 Drives
02.
VLT® 6000 HVAC Drives
03.
HVAC Drive Systems
04.
Pump & Fan Drives
05.
Drive & Bypass Panels
06.
Legacy Danfoss Graham Systems
Complete Automation Services
From troubleshooting and repair to ongoing automation support, our technicians help keep critical systems operating reliably.
Diagnostics
Repair
Automation Support
Common Graham Drive Symptoms
01.
Drive Will Not Power Up
02.
Programming Faults
03.
Loose Connections
04.
Overcurrent Trips
05.
Motor Will Not Run
06.
Cooling Fan Failures
The Repair Process
When a Graham or Danfoss Graham drive experiences problems, Control Concepts Dallas evaluates both the equipment and the conditions surrounding the failure.
Our technicians review incoming power quality, fault history, operating conditions, drive configuration, connected motors, mechanical loads, communication systems, environmental conditions, and overall system performance to determine whether the issue originates within the drive or elsewhere in the application.
Once the root cause is identified, we help determine whether repair, replacement, retrofit, or modernization is the most practical path forward.
Many drive-related issues can be reduced through routine preventative maintenance, proper cooling, clean operating conditions, and periodic inspection of connected equipment. Danfoss troubleshooting materials identify motor conditions, bypass controls, programming, interlocks, cooling, and internal faults as important areas to examine during drive diagnostics.
Most drive failures can be avoided through preventative maintenance.
