Cubigel GU45TG Hermetic Compressor – 1/6 HP, R134a, HBP 470 W

Cubigel GU45TG is a 1/6 HP hermetic reciprocating compressor manufactured for light commercial appliances operating at positive temperatures, such as water dispensers, bottle coolers, beverage vending machines and display cabinets. It operates with R134a; with a displacement of 4.5 cm³ it delivers a cooling capacity of 470 W (1,604 BTU/h) under ASHRAE HMBP conditions.

R134a HMBP Compressor: For Water Dispensers, Bottle Coolers and Display Cabinets

With its U series body, fan-cooled design and CSIR (capacitor start) motor, the GU45TG can be used in both capillary tube and expansion valve systems. It is the U series counterpart recommended to replace the GL45TB model of Cubigel's former L series; the displacement and refrigerant are the same.

Key Technical Specifications and Equipment

• Brand / Model: Cubigel GU45TG · made by Huayi
• Refrigerant: R134a · also compatible with R1234yf according to the manufacturer's data sheet
• Application: HMBP (high-medium back pressure) · evaporating −25 … +10 °C
• Displacement: 4.50 cm³ · bore 22.0 mm · stroke 11.88 mm
• Motor: CSIR · locked rotor current (LRA) 8.9 A
• Power supply: labeled 200-230 V at 50 Hz, operating range 170-253 V (suitable for 230 V mains) · 220-240 V at 60 Hz
• Cooling: fan cooled · expansion: capillary tube or expansion valve
• Oil: ISO VG 22 ester, 220 cm³
• Tube inner diameters: process Ø6.2 · suction Ø6.2 · discharge Ø4.9 mm
• Dimensions: height 173.5 mm · base 204 × 158 mm (228 mm with terminal box)
• Mounting holes: European type 6 × Ø16 (170 × 70 mm) · American type 4 × Ø19 (166 × 101.6 mm)
• Weight: 8.6 kg · max. ambient temperature 43 °C

Performance (Condensing +55 °C)

ASHRAE: liquid 46 °C, ambient and suction 35 °C · CECOMAF: liquid 55 °C, ambient and suction 32 °C. Capacity decreases as the evaporating temperature drops; make your selection according to your target cabinet temperature.

Electrical Equipment (Manufacturer References)

• Start capacitor: 50 µF 330 V
• Relay: QLZ-4.0A
• Overload protector: B85-130 (9 A · open / close 130 / 62 °C)

• 🔧 Installation: The body has both European (170 × 70 mm) and American (166 × 101.6 mm) hole patterns; when switching from the old compressor, compare the grommet positions with the dimensional drawing.
• Application limit: This model is HMBP — for positive-temperature coolers. It is not used in freezer (LBP) applications.