0 5 T / 0 6 T S C R E W COMPRESSOR A P P L I C AT I O N G U I D E
69Pages

Section 4 — Refrigerant Management System 4.1 Section 6 — Motor and Discharge Temperature Control 6.1 6.2 6.3 Section 7 — Subcooler Selection and Performance Data Adjustment 7.1 7.2 7.3 7.4

Introduction This manual is for the application of the Carlyle 06T semi-hermetic and 05T open drive twin screw compressors. The operational limits, required accessories and operational guidelines are contained in this manual and must be complied with to stay within the compressor warranty guidelines. The Carlyle 06T and 05T screw compressors are gear-driven twin screw compressors. The gear drive yields the benefits of light weight and small cubic volume. One of the key features of the Carlyle screw compressor is that all the semi-hermetic models have the same physical dimensions and port...

BOTTOM VIEW OPTION 2: C4) 011.1mm H0LE5 CFOR HARD MOUNTING ONLYD.

COMPRESSOR PHYSICAL DIMENSIONS CONTINUED ** * * Standard service valve used on all 33-54 cfm Compressors; ** Larger barstock service valve used on all 65-88 cfm Compressors (shown).

Section 1 — General Information 1.1 Certification 1.2 Screw Compressor Size (Displacement) UL and CSA approvals have been obtained on the 06T screw compressors with the following refrigerants: 06T compressors are available in the following displacement sizes: 1. R-22 2. R-134a 3. R-404A & R-507 The UL file number is SA4936. CSA file number is LR29937; CSA report number is LR29937-579c. For UL and CSA approvals it is essential that only listed special purpose circuit breakers or Furnas 958 series soild state overload relays be used. (See Section 5.2 and 5.3 for selection tables). The must...

1.5 Ambient Conditions The screw compressor is designed for the following specified ambient temperature ranges: Non-Operating Start-Up Operating The compressor inlet screens are field serviceable and available through Carlyle distribution. Suction and discharge connections will interface with the 2-1/2" bolt pattern service valves currently being used on the Carlyle reciprocating compressors. Rotalock® service valves are used for the economizer line shut off. The line sizes are as follows: The intended installation modes for the screw compressor are: Suction Discharge Economizer Machine...

Section 2 — Operating Specifications approval from Carlyle Application Engineering or warranty is voided. Oil cooling can be achieved through the use of an oil cooler or with desuperheating valves (as described in Oil Cooling Systems, Section 3.7) 2.1 Operational Envelopes The following operational envelopes, based on 65°F (18°C) return gas, show the allowable operating suction and discharge pressure ranges for R-134a, R-22, and R-507/R-404A. Operation outside of these envelopes requires Saturated Discharge Temperature deg F (deg C) Saturated Suction Temperature deg F (deg C) R-134a...

Saturated Discharge Temperature deg F (deg C) Saturated Suction Temperature deg F (deg C) 2.2 Vapor Temperature Limits 2.4 Operating Speed Ranges Any application of screw compressors must operate within the limits defined by the application maps for the various refrigerants and applications. Vapor Temp. Suction Economizer The operating speed range for the screw compressor is as follows for the different size range compressors. Model No. 06T**033 06T**039 06T**044 06T**048 06T**054 06T**065 06T**078 06T**088 06T**108 *SH = Superheat **The maximum economizer pressure allowable is 175.3 psig...

2.5 Inverters and Refrigerants The Carlyle screw compressor is compatible with inverter drives. An inverter drive varies the speed of a compressor to improve system load matching. VARIABLE SPEED LIMITS For 06TR Low Temp Compressors Model No. 06TRC033 06TRD039 06TRD044 06TRE048 06TRE054 06TRF065 06TRG078 06TRH088 06TRK108 Inverters are an effective tool for efficiently matching system loads with screw compressors. Motor size and motor cooling capabilities must be considered when using an inverter to increase speeds above 60 Hz. Following these guidelines will result in improved system design...

2.8 High Discharge Pressure Control All Carlyle screw compressors are equipped with one step of mechanical unloading.The unloader valve is controlled by a solenoid mounted on the compressor body. The compressor is unloaded when the solenoid is de-energized and loaded when the solenoid is energized. The compressor should always be started unloaded (for a minimum time determined by the control module) which will provide a soft start by partially relieving the compression chamber back to suction. Unloaded operation reduces the effective capacity by 30% to 62%, depending on the model and system...

2.11 Reverse Rotation Protection Correct compressor rotation is critical for compressor reliability. The compressor can fail within 2-6 seconds of start-up if it is not rotating in the correct direction. Installation of a pressure gage at the discharge pressure access fitting in the compressor body (measuring the pressure upstream of the integral discharge check valve) is recommended during initial start-up or whenever the compressor is serviced. The gage should be monitored to ensure increasing discharge pressure at start-up. Screw compressors emit very high frequency gas pulsations that...

Section 3 — Oil Management System 3.1 Oil Separator An oil separator is required on all Carlyle screw compressor systems. Carlyle offers two sizes of vertical oil separators. Parallel systems (over two compressors) require the use of the Carlyle 14" (35.6cm) separator, and single and double compressor systems require the use of the Carlyle 12" (30.5cm) separator. See the drawings below for dimensional information on the oil separators. 14" (35.6cm) VERTICAL OIL SEPARATOR PHYSICAL DIMENSIONS 12" (30.5cm) VERTICAL OIL SEPARATOR PHYSICAL DIMENSIONS FOR REFERENCE ONLY INCHES [CENTIMETERS (cm)]

See section 9.1 for the recommended oil charging procedure. 3.2 Piping Configuration The inlet piping from the compressor to the separator should follow a few simple rules: The screw compressors have no oil sump and therefore are shipped empty and must not be charged. For the recommended oil type, please refer to Section 1.4. 1. The discharge header should be one consistent size throughout. 2. Step changes in the line diameter should be avoided with the exception of the reducing fittings required to couple to the oil separator. Carlyle recommends operating the system with the oil level...