AccuMetal Chiller Guide
Applies toAccuMetalTopicReference
S&A (Teyu) CWFL-1500BN dual-circuit industrial chiller · ships with every AccuMetal 24 and 51 · Thunder Laser USA · Nov 9, 2026
Two rules that prevent 90% of chiller tickets: distilled or deionized water only, and never run it dry. Water change every 3 months; air filter every month.
What it does
The CWFL-1500 is two chillers in one cabinet. The low-temperature circuit cools the MAX fiber laser source. The high-temperature circuit cools the cutting head optics. Each has its own tank, pump and setpoint, because the source wants to run cooler than the lenses — if the lenses run below room dew point they fog, and a fogged lens burns.
It plugs into its own 240 V single-phase circuit, runs on R-410A refrigerant like a window air conditioner, and connects to the machine with two supply and two return hoses on Rp 1/2 in fittings. Fill and level gauge are on the back.
Specifications — CWFL-1500BN (60 Hz, North America)
| Item | Value |
|---|---|
| Power | AC single-phase 220–240 V, 60 Hz · 3.4–16 A · 3.6 kW max draw |
| Circuit | Dedicated 20 A, 240 V single-phase (separate from the machine's 9 kW feed) |
| Cooling capacity | 5.03 kW nominal (17,145 BTU/h); compressor 1.69 kW |
| Refrigerant | R-410A (or R-32 on newer builds) |
| Circuits | Two, independent: low-temp (laser source) and high-temp (optics) |
| Temperature control | 5–35 °C range, ±0.5 °C stability; constant or intelligent (ambient-tracking) mode |
| Pump | 0.48 kW · 4.3 bar max · ~30 L/min source circuit, ~2 L/min optics circuit |
| Tank | 22 L total |
| Water connections | Rp 1/2 in inlet and outlet, each circuit; stainless |
| Size | 70 × 47 × 89 cm (27.6 × 18.5 × 35 in) |
| Weight | 68 kg net (150 lb); 79 kg crated |
| Ambient | Keep the room under 45 °C (113 °F); well ventilated |
| Protections | High/low water temp, ambient temp, sensor fault, flow alarm — relayed to the machine controller |
| Warranty | 2 years (S&A) |
Specs from the S&A; manual (CWFL-800/1000/1500) and teyuchiller.com. The ANP/BNP revision adds a 0.55 + 1 kW heater option; confirm the exact revision on the nameplate.
Setpoints
| Circuit | Cools | Factory default | Notes |
|---|---|---|---|
| Low-temp | MAX fiber source | Constant mode, 25 °C (shown in manual) | MAX typically specifies 22–25 °C. Match the source's label; do not go below 20 °C. |
| High-temp | Cutting head optics | Confirm on unit | Run 3–5 °C above the low circuit and above room dew point. Humid Florida shop: 28–30 °C is safer than 25. |
Intelligent mode sets water temperature relative to room temperature (factory offset −2 °C). It saves energy and avoids condensation but lets source temperature drift with the room; constant mode is the safer default for the laser source.
Controller (T-506H panel)
- Lights: INT Ctrl = intelligent mode · CT Ctrl = constant mode · PARAM Set = parameter mode.
- Change a setpoint: press SET, adjust with ▲▼, press RST to save. No key for 20 seconds exits without saving.
- Advanced menu: hold ▲ and press SET for 5 seconds; password 8. Don't change anything here without support.
- Factory reset: hold keys at power-up until "rE" shows.
- Silence alarm: any key. The code stays on the display until the fault clears.
Alarm codes
| Code | Meaning | Check first |
|---|---|---|
| E1 | Room temperature too high | Ventilation; room over 45 °C; filter screen clogged |
| E2 | Water temperature too high | Filter screen; fan running; condenser dusty; room temp; low water |
| E3 | Water temperature too low | Setpoint set too low; sensor; cold shop at startup |
| E4 | Room temperature sensor fault | Sensor plug; call support |
| E5 | Water temperature sensor fault | Sensor plug; call support |
| E6 | Flow / external alarm | Low water; kinked hose; air in lines after a fill (clears in a few minutes); pump |
First start
- Position with 50 cm (20 in) clear above the top fan and 30 cm (12 in) clear at the side air inlet. Casters locked.
- Fill through the rear supply lid with distilled or deionized water, slowly, watching the level gauge. Stop in the green NORMAL band.
- Connect supply and return for both circuits to the machine. Source circuit and optics circuit are separate pairs — don't cross them. Check every clamp.
- Plug into its own 240 V 60 Hz circuit. Switch on; the pumps start immediately.
- Watch for leaks for the first minute. Bubbles can trip E6 briefly while air purges — normal.
- Re-check the level after the lines fill and top up. Confirm both setpoints before the laser is enabled.
Never run the pump without water. Never use the pump to drain the tank — use the drain.
Allow 5 minutes between power cycles so the compressor can equalize.
Allow 5 minutes between power cycles so the compressor can equalize.
Maintenance
| Interval | Do |
|---|---|
| Daily | Glance at the level gauge and both temperature readouts before enabling the laser. |
| Monthly | Pull the side filter screen, wash it, dry it, refit. Check hoses and clamps for weeping. |
| Every 3 months | Drain and refill with fresh distilled/DI water. Monthly in a dusty or hot shop. |
| Every 6 months | Blow out the condenser fins with low-pressure air from the inside out. Check casters and level. |
| Yearly | Inspect pump for noise, check refrigerant performance (cold air at the outlet), verify alarm relay to the machine. |
| Before a freeze | Drain completely or move to a heated space. Water in the tank below 0 °C cracks the pump and plate heat exchanger. If antifreeze is unavoidable, ask [email protected] for the approved mix — household glycol attacks the seals. |
Water
- Use: distilled, deionized or purified water. Nothing else.
- Never: tap water (scale on the heat exchanger), well water, additives, or automotive coolant.
- Signs it's overdue: cloudy tank, green tint, slime on the gauge, rising source temperature at the same setpoint.
- Why it matters: the laser source's cooling channels are small. Scale or biofilm there is a warranty conversation.
Symptoms
| You see | Likely cause |
|---|---|
| Machine won't enable the laser; chiller alarm light | Any E-code — read the panel first |
| Source temperature creeping up over a shift | Dirty filter or condenser; room too hot; low water; water overdue |
| Condensation on the cutting head or lens fogging | Optics circuit set too cold for the humidity; raise the high-temp setpoint |
| Frequent E6 after a water change | Air in the lines — let it run; top up the tank |
| Chiller cycling on and off rapidly | Power-cycled too fast; wait 5 minutes; check supply voltage under load |
| Pump loud or cavitating | Low water; kinked return hose; pump wear |
Manuals and links
| Document | Where |
|---|---|
| S&A CWFL-800 / 1000 / 1500 User Manual (28 pp, dual-temperature chiller) | manualslib.com — CWFL-800/1000/1500 |
| S&A CWFL-1500 product page — manuals and FAQ | manualslib.com — CWFL-1500 |
| Teyu CWFL-1500 spec page (ANP / BNP revisions) | teyuchiller.com — CWFL-1500 |
| Teyu: connecting a CWFL-1500 to a 1500 W fiber cutter | teyuchiller.com — connection guide |
| S&A / Teyu technical support | [email protected] |
| Thunder Laser USA support | thunderlaserusa.com · knowledge base · (903) 522-4070 |
Manual pages for the CWFL-1500 are shared with the 800 and 1000; specs differ by model, use the 1500 column. Setpoint defaults and the heater option vary by revision — read the nameplate on your unit.
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