83003702.K Operating Instruction
Type KPC 108-L-U/S
page 34
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Single-Stage Hermetic Compliant SCROLL Motor-Compressor
Type ZR xx K3E-TWD-561
Introduction
Scroll Compressors in the range from ZR 90 K3* to ZR 380 KC* are characterized by the pilot duty motor
protection system that uses internal sensors and an external electronic module to protect the compressor
against motor overheating and excessive discharge temperature. For additional information, please refer to the
Copeland website at www.ecopeland.com.
Safety Instructions
Only qualified personnel should install and repair COPELAND compressors.
• Refrigerant compressors must be employed only for the use they are made for.
• Only approved refrigerant and refrigerating oils must be used.
• Do not start the compressor until it is charged with refrigerant.
• Correctly used, the compressor and the pressure line piping may reach temperatures that may cause burning if
touched.
• Wear safety goggles when working on open systems.
• If the refrigerant needs to be removed from the system, do not disperse it in the environment, use the correct
equipment & method of removal.
• Trained electrical personnel must connect the compressor and its accessories.
• All valid standards for connecting electrical and refrigeration equipment must be observed.
• Limit values for the supply voltage of the unit may not be exceeded.
• It is not allowed to run a test without the compressor being connected to the system and without refrigerant.
It is of vital importance that the discharge stop valve has been fully opened before the compressor is
started. If the discharge stop valve is closed or partly closed an unacceptable pressure with accordingly high
temperatures may develop in the cylinder head. When operating with air the so called diesel effect may occur,
i.e. the air sucked in is mixed with oil gas and can explode due to the high temperature in the cylinder head, and
thereby destroy the compressor.
Model Designation
Z
R
90K
3
E -
TWD -
561
1 2 3 4 5
6
7
1 - compressor family:
Z = Scroll
2 - application range:
R = high/medium temperature
3 - nominal capacity [BTU/h] @ 60 Hz and ARI conditions (*see below) using multipliers
"K" for 1000 and
"M" for 10 000
4 - model variation
5 - oil type:
E = POE oil
6 - motor version:
TWD (400V/460V/3/50/60 Hz)
7 - bill of material number:
561:
Rotalock connection, 24 V AC module (ZR90K3* to ZR19M3*)
*ARI-Conditions:
7,2 °C evaporating temperature
8,3 K liquid sub cooling
54,4 °C condensing temperature
35 °C ambient temperature
11 K
suction gas superheat
