CF ChatterFix
Preventive Maintenance

Wet Scrubber Fan and Differential

The wet scrubber fan check records the differential on the installed gauge and looks at the fan from the outside. The technician writes the as-found reading and compares it with the last one on the asset. Do not open ducting or bypass the scrubber. Anything past that line belongs to the site's own procedure, the OEM manual, or a permit. This is the inspection ChatterFix schedules. It is not itself permission to go further.

Interval Monthly
Est. Duration 1.5 hrs
Steps 5
Applies To Chemical Processing

The Procedure

The steps ChatterFix schedules for this PM. Every step is a checkable item on the work order — a technician can speak their way through it without touching a keyboard.

  1. Record the differential across the scrubber on the installed gauge
  2. Inspect the fan externally for vibration, guarding and unusual noise
  3. Confirm the spray header is not visibly blocked from the access the site allows
  4. Do not open ducting or bypass the scrubber to 'just look'
  5. A high differential goes to the site's scrubber procedure

Why This PM Exists

The wet scrubber fan check records the differential on the installed gauge and looks at the fan from the outside. The technician writes the as-found reading and compares it with the last one on the asset. Do not open ducting or bypass the scrubber. Anything past that line belongs to the site's own procedure, the OEM manual, or a permit. This is the inspection ChatterFix schedules. It is not itself permission to go further.

What Skipping It Looks Like

The differential climbs and somebody opens a hatch to look, with the fan still the path the process is using. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not open ducting or bypass the scrubber.

Setting the interval

Monthly. A high differential goes to the site's scrubber procedure. An as-found reading outside the limit the site already published is a finding. It does not become a new setpoint on this work order.

Equipment This Covers

Common Questions

How often should this PM run?
Monthly. Monthly. A high differential goes to the site's scrubber procedure. An as-found reading outside the limit the site already published is a finding. It does not become a new setpoint on this work order.
How long does it take?
Budget about 1.5 hours for a technician working to the standard procedure. ChatterFix uses that estimate for capacity planning, then learns your plant's actual time from completed work orders.
What happens if we skip it?
The differential climbs and somebody opens a hatch to look, with the fan still the path the process is using. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not open ducting or bypass the scrubber.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Chemical Processing industry pack. Pick your industry at signup and it is scheduled on the right assets automatically, with no configuration.

Related Procedures

Stop Retyping Your PM Library

This procedure — and every other PM for your industry — is already built into ChatterFix. Pick your industry and it lands on the right equipment, on the right interval, in about three minutes.