CF ChatterFix
Preventive Maintenance

CRAC Unit Filter and Coil

The CRAC unit check is the filter, the coil face, and the fan guard, done in the maintenance state the site names. The technician writes the as-found reading and compares it with the last one on the asset. Do not change a temperature or a humidity setpoint, and do not isolate the last running unit. 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 1.0 hr
Steps 5
Applies To Data Centers

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. With the unit in the maintenance state the site names, inspect the filter
  2. Look at the coil face and the fan guard
  3. Confirm the humidifier canister level if the unit has one and the site allows a visual
  4. Do not change a temperature or a humidity setpoint from this work order
  5. A loaded filter is changed on the site's redundancy plan, not by isolating the last unit

Why This PM Exists

The CRAC unit check is the filter, the coil face, and the fan guard, done in the maintenance state the site names. The technician writes the as-found reading and compares it with the last one on the asset. Do not change a temperature or a humidity setpoint, and do not isolate the last running unit. 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 last unit in the row comes offline for a filter because the redundancy plan was not opened. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not change a temperature or a humidity setpoint, and do not isolate the last running unit.

Setting the interval

Monthly, on the redundancy plan. A loaded filter waits for a unit that is allowed to stop. 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, on the redundancy plan. A loaded filter waits for a unit that is allowed to stop. 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 1.0 hour 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 last unit in the row comes offline for a filter because the redundancy plan was not opened. The round still closes, the number never lands on the asset, and the next person inherits a guess. Do not change a temperature or a humidity setpoint, and do not isolate the last running unit.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Data Centers 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.