# Equipment maintenance and calibration control for pharma plants

https://paratech.com.pk/insights/equipment-maintenance-and-calibration-control · Published 2026-10-22 · Equipment · ParaTech Product Team

> Work orders, preventive schedules and calibration records that take failed equipment out of use: how to run plant, lab and HVAC equipment in one register.

Every pharma plant runs on equipment that has to be right: balances in the dispensing booth, granulators and compression machines on the floor, HPLCs in the lab, and the HVAC that keeps the clean areas clean. When an inspector asks whether a balance was in calibration on the day a batch was weighed, the answer should come from a register, not from a binder on the engineering manager's shelf.

This article looks at what an equipment register needs to do in a pharmaceutical plant, and how ParaTech Pharma ERP handles maintenance and calibration in the same system that runs stores, QC, production and finance.

## Why maintenance and calibration belong in the ERP

Many plants keep maintenance in a spreadsheet and calibration certificates in folders. That works until three things need to be connected:

  - **Spare parts** are issued from stores, so the cost of a repair sits in inventory records, not in the maintenance log.
  - **Vendor services** such as annual maintenance contracts and external calibration are billed through purchasing and accounts.
  - **Fixed assets** carry the equipment's cost and depreciation in finance.

When the equipment register lives beside those records, a work order can pull parts through a material issue, a vendor bill can be raised as a service purchase invoice, and the equipment can be linked to its fixed-asset record. Nothing is keyed twice.

## The equipment register

The register is the single list of every piece of equipment the plant maintains. For each item, ParaTech records:

  - Code, category and criticality
  - Maker, model, serial number and asset tag
  - Parent equipment, so a component can sit under the machine it belongs to
  - An optional link to the fixed-asset register
  - Department, location and custodian
  - Purchase and warranty details and expected life

Locations are set up as a tree of any depth: site, building, floor, then room or line. Categories carry defaults that save time and keep the data consistent: a default criticality, whether calibration is mandatory and at what interval, and the GL account that maintenance expense should post to. Transfers, disposal, an asset label and a history card are available for every item.

![Equipment register with active and down status, calibration due date, criticality and KPI cards](https://paratech.com.pk/screenshots/equipment-register-960.webp)
*Status, calibration due and criticality for every piece of equipment.*

## Work orders: from fault to closed job

Breakdowns and planned jobs follow the same work-order life cycle:

  1. **Open**: a fault is reported or a scheduled job falls due.
  2. **Assigned**: a technician is allocated.
  3. **In Progress**, which can move to **On Hold** and back while parts or a vendor are awaited.
  4. **Completed**: the checklist from the maintenance plan is filled in.
  5. **Closed**: the job is verified, the equipment returns to service and the downtime closes.

Each work order records failure, cause and remedy codes, so the history can later answer "what keeps going wrong with this machine, and why?" rather than holding free-text notes that nobody can analyse. Parts come through a material request and material issue, so stock and cost are recorded in inventory. Outside contractors are billed through a service purchase invoice. Every status change is logged.

## Planned maintenance and calibration schedules

The maintenance planner holds preventive, calibration and inspection schedules. A schedule can run by calendar (every three months, every year) or by meter reading (every so many running hours). The planner's "raise due jobs" action creates the work orders that are due, so the engineering team works from a list rather than from memory.

## Calibration records that change the equipment's status

A calibration record in ParaTech captures what an auditor expects to see:

  - As-found and as-left readings
  - Certificate number
  - The reference standard used
  - Measurement uncertainty
  - A result: **Pass**, **Pass after adjustment** or **Fail**

The result is not just recorded; it acts on the equipment. **A Fail puts the equipment Down** until a later calibration passes. Equipment whose calibration is overdue is blocked from use. That is the difference between a calibration log and a calibration control: the system, not a reminder e-mail, takes the instrument out of service.

![Calibration register with pass, adjusted and fail results, certificates and next due dates](https://paratech.com.pk/screenshots/equipment-calibration-960.webp)
*A failed calibration takes the equipment Down until it passes again.*

## Contracts, usage and alerts

Warranties, AMCs, CMCs, leases and rentals are recorded against the equipment with their expiry dates, and the system raises alerts before they lapse. Usage, meter readings and downtime are recorded too, which is what makes availability measurable. Alerts for PM due, calibration due, contract expiring and equipment down appear in the notification bell.

## Measuring reliability: the equipment dashboard

Because downtime, work orders and calibrations are all recorded in one place, the Equipment Management dashboard can show:

  - Availability and downtime
  - MTBF (mean time between failures) and MTTR (mean time to repair)
  - Preventive maintenance compliance
  - Calibration pass rate
  - Overdue jobs and calibrations

These are the numbers an engineering manager needs for a monthly review and the numbers a QA head wants to see before an inspection.

## Standards the module is built around

The module is designed around the concepts of ISO 55000 (asset management), ISO 14224 (failure coding), ISO/IEC 17025 (calibration records) and EN 13306 (maintenance terminology). It is industry-neutral, so fields that only matter for medical devices can be switched off in a pharma plant. The module is switched on per company.

## A practical checklist for your own plant

  - Can you list every instrument whose calibration is due in the next 30 days, by location?
  - When a calibration fails, what stops the instrument from being used tomorrow morning?
  - Are spare parts for repairs issued from stores with a document, or taken informally?
  - Can you see the full history of one machine, including every failure cause and every part used?
  - Do you know your MTBF and MTTR for critical equipment, or only how many breakdowns there were?

If several of those answers depend on a person rather than a record, it is worth looking at how the register, work orders and calibration fit together. See the [Equipment & Calibration module](https://paratech.com.pk/modules/equipment), or [book a demo](https://paratech.com.pk/contact) and we will walk through it with your own equipment categories.

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