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OperationTemplate: cip-hot-wash-op

A generic CIP hot chemical wash operation: fill with chemical solution, heat to target, agitate for the full contact time, and drain. Use this operation for any heated chemical wash step in a mix-tank-style CIP cycle, typically a caustic (NaOH) wash for organic soil and an optional acid wash for inorganic scale. Each phase supports the skip_if_zero parameter so the operation can be toggled off per call via a 0/1 recipe gate.

Where to find it

System endpoint → Equipment Library → Operations → select cip-hot-wash-op.

What you see when it runs

Inside the procedural tree, this operation appears as a three-step node:

Element Meaning
Operation node caustic-wash or acid-wash depending on which UnitProcedureTemplate call you're inside
Phase children fill → heat-and-hold → drain
Skipped state When the caller passes skip_if_zero = 0, the child phases short-circuit and the operation completes in a single tick — visible in the tree as a green-checked step with no elapsed time

HMI screenshot pending

An annotated capture of a running cip-hot-wash-op operation will be added here.

Phases

# Step Phase template Description
1 fill cip-fill Fill with chemical solution (skips if skip_if_zero < 1)
2 heat-and-hold cip-heat-and-hold Heat to target temperature and hold with agitation for contact time
3 drain cip-drain Drain wash solution

Capability: mixing.

Parameters

Parameter Type Unit Range Default Required
fill_level REAL L 50-450 350 yes
wash_temp REAL degC 40-85 75 yes
heat_output REAL % 10-100 80 yes
agitate_speed REAL % 20-100 60 yes
contact_time TIME — 1m-1h 30m yes
drain_level REAL L 0-50 5 no
skip_if_zero REAL — 0-1 1 no

TIME parameters take duration strings ("45s", "1m30s", "5m"), not bare numbers.

How it works

Linear three-phase sequence with a gating parameter:

  1. The caller passes skip_if_zero (conventionally bound to a recipe parameter like acidWashRequired).
  2. If skip_if_zero >= 1, the three child phases run in order — fill, heat and hold, drain.
  3. If skip_if_zero < 1, each child phase exits immediately on its initial step, and the operation completes without any field effect. Used to make the acid-wash step conditional on the acidWashRequired recipe parameter.

Used in

Try it

  1. HMI endpoint → Batch Execution → + New → sim-cip-cycle-m1 → Start
  2. Expand the procedural tree — this operation appears as caustic-wash (always runs) and acid-wash (conditional)
  3. Open Data endpoint → Trends on tank temperature during the hot wash to see the heat ramp, contact-time hold, and cool-down
  4. Re-run the recipe with acidWashRequired = 0 to see the acid-wash operation complete instantly in the procedural tree