Dear Valued Customer,
To make your new heat exchanger “zero-break-in” ready, we’ve distilled our field experience from thousands of units into this pocket-sized start-up guide. Keep it with the operator on day one—and keep peace of mind every day after.
① 15-Minute Pre-Start “Safety Triple-Check”
Task | Our Friendly Tip | What to Keep in the Tool Bag |
Visual & Mechanical | Use a phone flashlight to circle the unit. Look for “shiny wet spots” on welds, flanges, and plate gaskets. | Disposable gloves, absorbent paper |
Instruments & Valves | Tap pressure gauges—pointers should not stick; lift the safety-valve lever—it should snap back with a click. | PTFE tape, adjustable wrench |
Media Compatibility | Write design T / P on a sticky label at the inlet. One glance prevents mis-connection. | Oil-based marker tags |
② First Commissioning “Slow-Three-Step” (prevents 90 % of water hammer & leaks)
- Cold side first: open valve to 10 %only; wait for the hiss of venting air, then open fully and slowly.
- Hot side second: ramp temperature ≤1.5 °C / min—about the speed a cup of tea cools.
- Baseline selfie: take a phone photoof the initial ΔT and ΔP; this becomes your “health passport” for futurechecks.
③ One-Touch Solutions for Special Duties
Duty | Factory Pre-Fit “Insurance” | What to Do on Site |
High Pressure ≥ 10 MPa | Hydro test at 1.5 × design pressure (report included); nickel-alloy gaskets. | Step-up pressure in 25 % stages—set a 15 min phone alarm between stages. |
Low Temp ≤ –20 °C | Extra 20 mm insulation + roll of aluminum tape supplied. | Pre-cool with dry N₂, max 2 °C / min ramp. |
Corrosive Media | Upgraded tubes (2205/2507 or Ti) + corrosion-inhibitor injection port. | Inject inhibitor 30 min before start-up; keep a 200 ml sample. |
Fouling Risk | Internal EP finish Ra ≤ 0.4 µm + on-line anti-scale tap. | If ΔP rises 15 % above baseline, switch to standby unit and alert our service WeChat. |
④ Fast-Action “Emergency Card” (print & stick on the control-box door)
Symptom | Possible Cause | 30-Second Action |
Temperature won’t reach set-point | 1. Air lock 2. Low flow 3. Fouling | Open vent 10 s → check flow meter → switch to standby |
Flange leak | Mis-aligned gasket / loose bolts | Depressurize to 0.5 MPa → tighten diagonally → still leaking? swap unit |
Heavy vibration | Uneven flow / loose support | Reduce flow 20 % → tighten support → photo & send to our service group |
⑤ Post-Start “Three Must-Dos”
- Scan & Register – The QR codeon the nameplate instantly builds a digital file with all factory data andtest reports.
- Month-1 Check-ins – Our serviceengineer will video-inspect on day 7 and day 30—no extra charge.
- Spare-Parts Pouch – A small boxshipped with every unit: gaskets*2, bolts*4, safety-valve sealing*1, Storeit in the drawer of control room.
24 / 7 Emergency Hotline
As you know, Yiteng is always be with clients at any time. Contact with us for service or technical chat at any time. You will have our quick response.
May every exchanger run like a silent workhorse on your site.
Wishing you a smooth start-up!
Your Trusted Heat-Exchanger Manufacturer
YITENG PV Customer Success Team
