CF ChatterFix
Preventive Maintenance

Clarifier Drive Torque and Rake

The clarifier drive check records the torque switch as found and looks at the rake from the bridge access the site allows. The technician writes the as-found reading and compares it with the last one on the asset. Do not enter the basin, and do not change the torque setting. 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 Water & Wastewater Treatment

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 torque-switch setting as found. Do not change it
  2. From the bridge access the site allows, look at the rake for debris you can see
  3. Confirm the drive guard is on and the oil level is readable if a sight glass exists
  4. Do not enter the basin
  5. A high-torque trip goes to the site's clarifier procedure

Why This PM Exists

The clarifier drive check records the torque switch as found and looks at the rake from the bridge access the site allows. The technician writes the as-found reading and compares it with the last one on the asset. Do not enter the basin, and do not change the torque setting. 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

Torque trips get reset until the rake stalls, and nobody writes the number that was on the switch. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not enter the basin, and do not change the torque setting.

Setting the interval

Monthly. A high-torque trip goes to the site's clarifier procedure. The basin stays unentered. 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-torque trip goes to the site's clarifier procedure. The basin stays unentered. 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?
Torque trips get reset until the rake stalls, and nobody writes the number that was on the switch. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not enter the basin, and do not change the torque setting.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Water & Wastewater Treatment 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.