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Home›Repair guides›Cummins/Onan›Hot Air Recirculation Test

Cummins/Onan QG7000i DF — Hot Air Recirculation Test

Installation · Installation

For the Cummins/Onan QG7000i DF, from the Cummins/Onan service manual.

Applies to: Cummins/Onan RV Generator Set

Before you start

  • EXHAUST GAS IS DEADLY! Do not operate the generator set where exhaust can accumulate.

Procedure

  1. Complete a representative installation.
  2. Set up a load bank to run the generator set at rated full load.
  3. Conduct the test with ambient air between 16 C and 38 C (60 F and 100 F).
  4. Measure inlet and ambient temperatures with thermocouples not heavier than 0.21 mm2.
  5. Close all compartment doors and run at full load at least an hour, recording every 15 minutes.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Rise over ambient exceeding 15 C (27 F) must be repaired/modified

Full service-parts list: Cummins/Onan RV Generator Set →

Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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