Preventive Maintenance¶

The Preventive Maintenance module (roots_hemms_pm) wraps OCA's maintenance_plan engine with hospital-specific configuration:

3 seeded maintenance kinds for common hospital PM categories
A dedicated "PM Scheduled" stage that PM-generated requests enter on creation — kept visually and operationally separate from corrective requests
Bilingual labels (English + Thai) on every kind
In-app help explaining how admins add their own kinds

At a glance¶

Aspect	Detail
Module ID	`roots_hemms_pm`
Depends on	`maintenance_plan` (OCA), `roots_hemms_workflow`, `roots_hemms_asset_master`
Maturity	Alpha
Adds	3 maintenance kinds + 1 stage + bilingual + routing override
Initial stage for PM	"PM Scheduled (ตามแผนบำรุงรักษา)" — sequence 5, SLA 72 hours

This module is a Layer 3 (hospital lens) extension on top of:

Layer 1 Odoo base maintenance — provides maintenance.request, maintenance.equipment, maintenance.stage
Layer 2 OCA maintenance_plan — adds maintenance.plan + maintenance.kind + daily cron that auto-creates PM requests by interval

See Architecture for the full layer model.

❌ Meter-based PM (e.g., every 1000 operating hours) — calendar-based only via OCA. Tracked on the Roadmap as Q1.5.
❌ Mobile/offline PM completion — desktop-only for now.
❌ AI-suggested PM frequency — admin manually sets interval per plan.
❌ IoT sensor → trigger PM — not in scope; future Q3+ work.