Pump fault diagnosis
A stationary, noisy or apparently active pump does not establish the root cause. Electrical output, command signal, resistance and delivered circulation must be checked together.
System component / pumps
CIRCULATION MUST BE PROVEN, NOT ASSUMED.
HIU pump diagnosis considers power, control signal, operating mode and the hydraulic circuit the pump is expected to serve.
Book pump diagnosis
HIU TECH / TECHNICAL SCOPE01—03
Grundfos technical cluster
Engineering support includes units fitted with UPMM 25-95 180, UPML 25-105 180, UPMXL 25-125 180 and UPMXXL 25-120 180 pump families. Model identification is verified from the installed data badge.
Attendance required
Conclusive diagnosis requires an engineer on site to measure temperatures, pressures, flow, electrical supply and control response under operating conditions.
PRIMARY 70.2°CRETURN 41.8°CΔT 28.4KFLOW 11.6 L/MIN
Measure. Diagnose. Resolve.