Sample the loop
Every 50–100 days, then after any make-up addition or vacuum fill.
Reference data
Reference pages written for the person who signs the commissioning sheet
A product page says what a model does; a commissioning sheet asks what the loop must hold. Sealing is where loops fail: a compression fitting cold-flowing under sustained clamp load, a seal face abraded by 5 µm particulate. Neither appears on a heat-rejection curve.
Reference pages
5
Parameters
8
Loop types
2
Micron categories
3
protection rating · commissioning staging · strainer rating
01 / Routing
Each guide settles one decision
Coolant quality
Which chemistry band the loop must hold.
Leak detection
Principle, siting and alarm thresholds.
Hose and fittings
Compound, braid class, termination, margin.
TIM selection
Interface plane, gap, assembly pressure.
Commissioning
Order of operations, and the cleanliness gate.
The sheets behind them
Five model codes per guide, one PDF each.
02 / Target bands
Conductivity · the two bands are not in conflict
Every routine loop number
| Parameter | DI technology loop | Glycol or facility water | Read by |
|---|---|---|---|
| pH | 8.0–9.5 | 7.0–9.0 | EMS-CF-WQ-PH |
| EC | 0.2–20 µS/cm | 50–300 µS/cm | EMS-CF-WQ-C |
| Chloride | <5 ppm | <50 ppm | Lab panel |
| Hardness | <20 ppm | <50 ppm | Lab panel |
| Suspended solids | <3 ppm | <3 ppm | EMS-CF-WQ-PC |
| Turbidity | <1 NTU | <1 NTU | EMS-CF-WQ-NTU |
| Bacteria | <100 CFU/mL | <1 000 CFU/mL | Lab panel |
| Leak setpoint | 150 µA, 20 s | 150 µA, 20 s | EMS-LD-C16 |
03 / Selection criteria
Each threshold, labelled by the kind of figure it is
| Product line | Criterion | Threshold | Figure type |
|---|---|---|---|
| Hose and fittings | burst margin | ≥3× maximum allowable | ratio |
| Thermal materials | impedance at pressure | 0.02 °C·in²/W at 30 psi | condition |
| Coolant filtration | absolute rating, finest channel | 7–10× smaller · 2× full flow · 10× side-stream | protection |
| Coolant filtration | unit-inlet guard | 500 µm class | strainer rating |
| Leak detection | zones per controller | 32 virtual zones | capacity |
| Commissioning | cleanliness class before fill | zero particles ≥50 µm | acceptance limit |
| Commissioning | flush sequence | 100 → 50 → 25 µm | staging |
04 / Cadence
Chemistry is a calendar item
Test the cable
Monthly where nuisance alarms are expensive, annually otherwise.
Change the element
At 35 psid, not on a date, inside the 60 psid collapse limit.
Reserve alkalinity
1.4 mL per ASTM D1121; the annual check on the inhibitor package.
Dry the cable
A wet-washed sensing cable needs 6–48 hours before it goes back down.
Book the next sample
A date starts the panel, not a fault.
05 / Labelling
Labelling rules before a number is quoted
| Rule | Without the label | With the label |
|---|---|---|
| Loop type travels with the number | 0.2–20 µS/cm at pH 8.0–9.5 | 50–300 µS/cm at pH 7.0–9.0 |
| A micron figure says which one | 5 µm | protection rating · commissioning staging · strainer rating |
06 / Scope
What is supplied, and what is not
Supplied: filter elements and side-stream skids, water-quality instruments, leak-detection cable and controllers, hose and fittings, thermal interface materials, telemetry kits, fill-and-flush equipment. Not supplied: coolant distribution units, and cold plates.
30–150 kPa technology-cooling pressure drop · 5 s make-up alarm
| Line | Status |
|---|---|
| Filter elements and side-stream skids | Supplied |
| Water-quality instruments | Supplied |
| Leak-detection cable and controllers | Supplied |
| Hose, fittings, thermal materials | Supplied |
| Telemetry kits, fill-and-flush equipment | Supplied |
| Coolant distribution units | Not supplied |
| Cold plates | Not supplied |
07 / Datasheets