Cold trap LFZ-CPC series

Product Overview
LFZ-CPC Series water vapor cryogenic pump trap is an ultra-low temperature refrigeration system that condenses and captures volatile and condensable vapors on a cryogenic surface. It is primarily used to capture water vapor inside vacuum chambers to accelerate pump-down and maintain clean vacuum environments.

Working Principle
A cryogenic coil or cold plate is cooled below -100°C inside the vacuum chamber. Volatile molecules condense on the cryogenic surface, rapidly reducing residual gas load and shortening vacuum pumping time to improve process yield and surface quality.

Design & Technology
LFZ-CPC models use single-compressor, mixed refrigerant cascade refrigeration. Design focuses on fast cool-down, low-temperature operation, ease of maintenance and integrated control via PLC and HMI.

Main Function
Rapid capture of water vapor and other condensable vapors during vacuum processes to improve coating quality and increase production throughput.

Features

• Rapid capture of water vapor and oil vapors; shortens vacuum time by 60–90%.
• Improves coating uniformity and prevents oil backflow to the chamber.
• Fast cooling: reach -100°C within ~3 minutes; minimum temperatures down to -150°C (model dependent).
• Fast hot-air defrost: typical defrost in ≤4 minutes and rapid temperature recovery.
• Optimized refrigeration for quick re-cooling (~3 minutes typical).
• Color touch HMI with PLC control; historical data logging and multi-language support.
• International-brand compressor and environmentally friendly mixed refrigerant.
• Standardized interfaces; configurable single- or dual-channel load outputs with inlet/outlet temperature display and recording.
• Monitoring and recording of internal, water-cooling, exhaust temperatures and exhaust pressure.
• Adjustable defrost setpoint with automatic notification after defrost.
• Alarms for compressor over-temperature/over-pressure and water-cooling faults.
• Front-mounted valve box for simplified operation and condensate management.
• Local/remote control and RS485 interface for host connection.

Safety protection

• High exhaust pressure protection.
• High exhaust temperature protection.
• Condenser over-temperature protection.
• Refrigeration system overload and overheat protection.
• Abnormal power phase sequence protection.

Advantages

• Refrigeration: optimized cascade refrigeration for efficient low-temperature performance and integrated defrosting.
• Control: PLC + HMI with self-checking, monitoring, recording, remote/local control and alarm functions.
• Data logging: multi-channel temperature and pressure monitoring with historical data query.
• Front valve box: improved safety and condensate handling to maintain performance.

Specifications table
Model | LFZ-CPC200 | LFZ-CPC500 | LFZ-CPC1200 | LFZ-CPC1800 | LFZ-CPC3500 | LFZ-CPC4200 | LFZ-CPC1200LT
Temp. range | -90 ~ -135°C | -90 ~ -135°C | -90 ~ -135°C | -100 ~ -145°C | -100 ~ -145°C | -100 ~ -145°C | -120 ~ -165°C
Cooling capacity @ -100°C (W) | 200 | 500 | 1200 | 1800 | 3500 | 4200 | 420
Vapor trap rate (L/sec) | 12000 | 52000 | 74000 | 104000 | 250000 | 298000 | 37250
Ultimate vacuum (torr) | 2×10^-9 | 2×10^-9 | 2×10^-9 | 2×10^-9 | 1.5×10^-8 | 1.5×10^-8 | 4×10^-12
Coil area (m2) | 0.1 | 0.3 | 0.5 | 1.0 | 2.0 | 2.5 | 0.25
Coil diameter (mm) | Φ8 | Φ10 | Φ12 | Φ16 | Φ16 | Φ16 | Φ10
Coil length (m) | 4 | 10 | 12 | 15 | 40 | 50 | 8
Pre-cooling time (min) | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 40 | ≤ 40 | ≤ 40
Defrost time (min) | N/A | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4
Cooling type | Air cooled | Air cooled | Water cooled | Water cooled | Water cooled | Water cooled | Water cooled
Cooling water port | N/A | N/A | 1/2" | 1/2" | 3/4" | 3/4" | 1/2"
Voltage | 220/50 | 380/50 | 380/50 | 380/50 | 380/50 | 380/50 | 380/50
Power (kW) | 1.2 | 4.5 | 6.5 | 8.5 | 11.6 | 14.2 | 11.2
Dimensions (mm) | 500×520×980 | 600×620×1250 | 750×900×1650 | 750×900×1660 | 920×800×1860 | 750×940×1755 | 750×900×1750

Technical specifications

• Series / models: LFZ-CPC200, 500, 1200, 1800, 3500, 4200, 1200LT.
• Operating temperature: typical ranges from -90°C to -165°C depending on model; minimums approx. -150°C for some models.
• Cooling capacity: from 200 W to 4200 W (example at -100°C).
• Vapor trapping: ~12,000 L/s up to ~298,000 L/s depending on model.
• Ultimate vacuum capability: down to ~2×10^-9 torr (model dependent).
• Coil configurations: various areas, diameters and lengths to achieve rapid condensation.
• Defrost: hot-air defrost with rapid recovery (≤4 min on most models).
• Cooling: air-cooled and water-cooled variants available.
• Control & communications: PLC + color touch HMI, data logging, RS485 interface, local/remote operation.
• Protections: multiple alarms for pressure, temperature, compressor overload, water-cooling faults and power phase anomalies.