Extraction and Initial Drying Setup Standard

Purpose

This is the visit that turns a documented loss into a moving drying job: bulk water out, a salvage call made and written down, equipment sized to the class assigned, and every unit commissioned and logged before the crew leaves. Skip the sizing step and equipment gets guessed by habit, four air movers because that's what fit on the truck. Skip the electrical step and the dehu trips a breaker at 2 AM with nobody there to reset it, and the job loses a full night of drying while the customer sleeps through a rising humidity swing.

Scope

Covers extraction through equipment commissioning on the same visit the residential water loss standard hands off, source stopped, category and class assigned, baseline grid and isolated-circuit list already in the file. Ends when equipment is running, logged, and the customer briefed. The daily monitoring standard owns every visit after this one; job closeout owns demobilization. This SOP does not repeat categorization or classification, and it does not repeat the equipment-day billing log the equipment-day documentation standard owns; it owns getting the equipment sized, placed, and safely powered.

Roles and the handoff between them

Before equipment goes on any circuit

Multiple dehumidifiers and a bank of air movers is exactly the load that overloads a residential circuit, and the hazard has two routes that each need separate control. The first is drawing more continuous amperage than the branch circuit was built for; a 15-amp kitchen circuit was sized for small appliances, not two commercial dehus running around the clock. The second is a cord or power strip routed through the wet zone the crew is standing in. Calculate the amp draw of everything headed onto one circuit before the first unit is plugged in, and never route a cord through standing water or lay a connection on wet flooring; run it overhead or around the dry perimeter instead.

The procedure

1. Confirm the handoff record is complete and protect what is not affected. Verify source-stopped confirmation, category, class, and the isolated-circuit list are in the file, then stage furniture off wet flooring and lay walk-off mats at the threshold into unaffected rooms. Acceptance: record confirmed complete and unaffected flooring protected before any equipment is carried in. Wrong looks like furniture legs left sitting in wet carpet while the crew focuses on the loss itself. Stop rule: an incomplete handoff record halts extraction and returns to the residential water loss standard until it is filled in. Hazard: lifting wet furniture or a saturated carpet roll is a back-strain hazard; lift with the legs, team-lift anything one person cannot control alone, and never twist under load.

2. Extract bulk water before anything else touches the affected area. Use truck-mounted or portable extraction for standing water, working from the deepest point outward. Acceptance: no standing water deeper than about an eighth of an inch on hard surfaces, and carpet that no longer releases visible water under a footstep-pressure check. Wrong looks like calling it done because the puddle is "mostly gone." Stop rule: for Category 2 or 3 water, discharge only to a sanitary cleanout, never to a storm drain or to grade; a Category 3 finding routes the whole job to the sewage decontamination standard rather than continuing here. Hazard: extraction hose and cord runs are a trip hazard in a room already crowded with displaced furniture; keep them separated and taped down at thresholds.

3. Make the salvage call on saturated porous material and write down why. Apply the extract-vs-dry-in-place-vs-demo decision logic to carpet pad, insulation, and any swollen composite material rather than defaulting to remove-everything. Acceptance: a documented method for each affected material with the reasoning that drove it. Wrong looks like material pulled with nothing in the file explaining why. Stop rule: where the customer declines a recommended removal, the refusal from the intake SOP already governs; do not remove material outside the signed scope. Hazard: none beyond the entry hazard already controlled.

4. Size equipment against the class already assigned, not against what happens to be on the truck. Pull air mover count and spacing and dehumidifier count from the class-based sizing in the drying equipment math reference. Acceptance: the count and placement plan documented against the assigned class, or a written deviation reason (a hidden cavity, a dense material, cold ambient conditions). Wrong looks like equipment counted out by habit with no class behind the number. Stop rule: an undocumented deviation from the class-based count gets kicked back at office review before billing.

5. Check electrical capacity before anything is plugged in. Calculate the amp draw of every unit headed onto a circuit and compare it against that circuit's rating and whether it carries GFCI protection. Acceptance: a written amp total under the circuit's rated capacity, with GFCI confirmed present on any circuit reaching a wet zone. Wrong looks like plugging units in until something trips and calling that the capacity test. Stop rule: an undersized or non-GFCI circuit gets a dedicated run from a verified dry, unaffected circuit instead; never make up the difference with a daisy-chained power strip. Hazard: an overloaded circuit is a fire hazard, not a nuisance trip; a warm cord or plug is a stop-now signal, not something to monitor through the shift.

6. Place and aim equipment to the material, not to the room. Set air movers at a low angle skimming the wet surface rather than blowing into open air, and keep dehumidifier return air clear of direct air-mover discharge so it is not just recirculating the same boundary-layer moisture. Acceptance: each unit's aim photographed and matched to a specific wet surface it is drying. Wrong looks like air movers lined up against one wall because that is where the outlets are. Stop rule: none beyond re-aiming anything found blowing into open room air rather than at wet material.

7. Commission equipment and take the first reading, and resolve every circuit isolated at intake. Power the units from the verified circuits, confirm each is running, and log a first grain-depression reading as the Day 0 baseline. Acceptance: every circuit isolated in the residential water loss standard is either confirmed dry and GFCI-tested before re-energizing, or left open with equipment instead running from a dedicated, verified-dry circuit; a documented first reading exists for every dehumidifier. Wrong looks like flipping the isolated breakers back on because the crew is packing up and the meter reads dry enough by eye. Stop rule: a wet-zone circuit that cannot be confirmed GFCI-protected stays open; equipment on that zone runs from the dedicated cord, full stop, no exceptions for convenience.

8. Brief the customer and log Day 0 complete. Tell them what to expect overnight (equipment noise, closed interior doors for containment, a plain do-not-unplug instruction) and photograph the finished setup. Acceptance: a written commissioning log and photo set exist before the crew leaves the property. Wrong looks like a verbal "we'll be back tomorrow" with nothing written down. Stop rule: none, but a Day 0 visit that ends without a logged baseline gives the next technician nothing to compare against.

The record this produces

A Day 0 commissioning log: the salvage decision per material with its reasoning, the equipment count and placement plan against the assigned class, the amp-draw calculation and which circuits are live versus dedicated, setup photographs, and the first grain-depression reading per dehumidifier. The daily monitoring standard reads this log as its own starting point.

One run of this procedure, filled in

Continuing the water heater loss from the residential water loss standard: Category 1, Class 2, kitchen ceiling drywall and one cabinet run affected.

• Step 1: handoff record confirmed complete. Dining room floor protected with mats, countertop items moved clear of the drip line.
• Step 2: standing water on the counter and kitchen floor extracted with a wet vac; footstep-pressure check on the tile floor released no further water.
• Step 3: cabinet face frame is solid wood and dried in place; the particleboard lower shelf at the toe-kick was swollen beyond recovery and removed. The two-square-foot sagging patch of ceiling drywall was cut out rather than dried in place, both decisions logged with the reasoning.
• Step 4: Class 2 sizing called for one commercial dehumidifier and four air movers; the tech documented that count against the class rather than guessing.
• Step 5: this step failed the first time. The dehumidifier plus four air movers on the kitchen's 15-amp circuit calculated over the circuit's rated capacity, and that circuit was also one of the two isolated at intake. Stop rule taken: equipment instead ran off a dedicated cord from a verified-dry garage circuit on its own breaker, confirmed GFCI-protected.
• Step 6: dehumidifier centered in the kitchen, air movers aimed low across the floor and one angled up into the open cabinet cavity, none facing each other.
• Step 7: the kitchen circuit itself stayed open per the intake isolation, since it could not be confirmed GFCI-protected; equipment ran entirely from the dedicated cord. First grain-depression reading logged at commissioning as the Day 0 baseline.
• Step 8: customer briefed on the do-not-unplug instruction and told not to use the kitchen sink until the plumber's repair is verified next visit. Commissioning log and photo set completed before the crew left.

References

• IICRC S500, "Standard for Professional Water Damage Restoration," extraction and equipment sections.
• See related: Drying Equipment Math, Extract vs Dry In Place vs Demo Method decision matrix.
• See related: Residential Water Loss Standard Procedure, Daily Drying Monitoring and Equipment Adjustment Standard, Drying Verification and Job Closeout Standard, Equipment-Day Documentation for Defensible Invoicing.
• National Electrical Code, in the edition your authority having jurisdiction has adopted, for branch-circuit loading and GFCI requirements on temporary equipment connections.