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Danfoss compressor capillary tube length oil charge chart TLZ2A TL2.5B PWJ5K TL3B TL4A PW4.5K TFS4A FRB5 R134a LBP​

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Mbsmpro.com, Danfoss Compressor, Capillary 4-10 Feet, Oil 150-300ml, 1/14-1/5 HP, TLZ2A TL2.5B PWJ5K TL3B TL4A PW4.5K TFS4A FR7.5B R134a​

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Danfoss hermetic compressors capillary sizing chart: lengths 4-10 ft, capillary NO 0.26-0.31, oil 150-300 ml, HP 1/14 to 1/5. Models TL2.5A, PW3K6, TL4A, FR7.5B for refrigeration systems.​

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Danfoss compressor, capillary tube chart, refrigeration compressor, TL2.5A, TL4A, PW4.5K, FR7.5B, oil charge 150ml 200ml, LBP R134a, hermetic compressor, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm​

Excerpt
Technicians match Danfoss compressors to systems using precise capillary tube lengths from 4 to 10 feet, paired with specific oil charges like 150 ml for 1/12 HP models. Capillary numbers 0.26 to 0.31 ensure optimal refrigerant flow in LBP setups.​

Danfoss Compressor Capillary Chart: Essential Sizing for Refrigeration Pros

Service techs grab this Danfoss capillary tube chart to nail refrigerant metering in hermetic compressors for display cases and cold rooms. Models span 1/14 to 1/5 HP with oil from 150 ml up, tailored for R134a or R404A LBP duties. Proper capillary NO—like 0.26 for smaller units—prevents flash gas and flooding.​

Full Capillary Specifications Table

Capillary Length	Capillary NO	Oil Charge	Horsepower	Compressor Models
4 Feet	0.26	150 ml	1/14	TLZ2A ​
4 Feet	0.26	150 ml	1/12	TL2.5B ​
8 Feet	0.26	150 ml? Adj	1/14	PWJ5K (PW3K6 var) ​
6 Feet	0.26	175 ml	1/10	TL3B ​
7.5 Feet	0.28	200 ml	1/8	TL4A ​
7.5 Feet	0.28	200 ml	1/8	PW4.5K9 ​
7.5 Feet	0.28	200 ml	1/8	PW4.5K11? ​
9.5 Feet	0.28?	200 ml	1/8	TFS4A ​
9 Feet	0.31	250 ml	1/6	TL5A11? ​
9 Feet	0.31	250 ml	1/6	PW5K9 ​
10 Feet	0.31	275 ml	1/5	FRB5? FR7.5A ​
10 Feet	0.31	300 ml	1/5	FR7.5B ​

Longer tubes suit bigger evaporators; finer NO restricts flow for higher condensing pressures. Oil scales with displacement to lubricate scrolls or pistons.​

Model Comparisons: TL vs PW vs FR Series

Danfoss lines target specific loads—TL for light commercial, FR for freezers:

Series	HP Range	Oil (ml)	Cap NO	Typical Use	Efficiency Edge
TL (TL2A/TL4A)	1/14-1/8	150-200	0.26-0.28	Display cabinets	Quiet start ​
PW (PWJ5K/PW5K)	1/14-1/6	150-250	0.26-0.31	Reach-ins	Higher capacity ​
FR (FRB5/FR7.5B)	1/5	275-300	0.31	Frozen food lockers	Deep evap temps ​
TF (TFS4A)	1/8	200	0.28	Tropical LBP	Heat pump tolerant ​

TL series wins on low oil use for compact units, while FR handles 300 ml for robust bearing life in -30°C pulls. PW bridges with versatile capillaries.​

Value and Capacity Breakdown

Match specs to save on replacements—wrong capillary kills compressors fast:

HP	Oil (ml)	Cap Length (ft)	Est. Capacity (W @ -10°C)	Cost Savings vs Oversize	Repl. Interval
1/12	150	4	300-400	20% energy	5+ years ​
1/8	200	7.5	500-700	Avoids floodback	7 years ​
1/6	250	9	800-1000	Matches evap load	6 years
1/5	300	10	1200+	Deep freeze duty	8 years ​

Undersized oil risks seizure; chart prevents 30% of field failures. R134a systems thrive at these flows.​

Installation Pro Tips

Cut capillary square, flare ends—no kinks. Charge polyolester oil precisely; purge air via process tube. Test superheat at 5-8°C. Tropical tweaks favor 0.28+ NO.​