The Copeland ZPK7 product line provides a full lineup of 1. These large efficiency gains are paired with new, innovative compression technology and manufacturing processes that result in the reduced compressor to compressor performance variability over the prior generation product. Efficiency improvements are enabled by industry-leading motor, bearing, and manufacturing processes to deliver these substantial gains.
By delivering enhanced efficiency at SEER2 and HSPF2 operating conditions, this regulation-ready product line is aiding OEMs in minimizing the magnitude of design change and improving applied cost for the required higher efficiency air conditioning and heat pump systems to meet the energy standards. Copeland ZPK7 1. Watch Videos.
How do scroll compressors work? Identify local address and phone information to talk more about Emerson products. Our Products. Recommended Gas filtration and treatment is appropriate for the application.
Packager configuration applies back pressure to the Compressors. Inlet and discharge valves allow the module to be isolated.
All guards and protective covers are installed. Protection from freezing is provided if needed for the application and location. A suitable enclosure providing protection from the elements is appropriate for the application and location. Compressor Module builds pressure on initial startup; no unusual mechanical noise. Oil level is correct at minimum and maximum speeds. No gas leaks are present. No oil leaks are present. Oil cooler fan turn on and run at the appropriate temperature. Oil cooler fan speed varies with temperature.
Compressor motor speed varies appropriately for the Packager configuration. Compressor continues to operate in bypass when the Compressor Module discharge is blocked. Compressor Module is leak tight maintains approximately 30 psig or more when the Compressors are initially turned off. Compressor speed should range from to rpm during normal operation. Suction pressure range is model specific. Pressure differential between suction and discharge is at least 70 psi.
Oil cooler fans should either run continuously or cycle periodically under normal conditions. If any of these conditions are not met during normal operation, shut down the unit and refer to 5.
Oil consumption varies by application and during initial operation. Monitor the oil level routinely to determine a consistent pattern of actual consumption.
Note: Some applications may require more frequent service. Normal color is clear or light gray. A low oil level or loss of oil in the system will result in overheating or mechanical failure.
A high oil level may result in excessive oil carryover and oil discharge from the Compressor Module when the Compressors are turned off. A restricted inlet screen will result in reduced flow. A restricted scavenge line orifice will result in excessive oil carryover. A dirty or plugged separator element will result in excessive oil carryover. Contact the Packager to obtain a maintenance tool kit.
These are typical air conditioning and refrigeration service tools. Figure 13 Maintenance Tools Back-seating control valve Oil pump, piston type, high pressure Designed to operate up to psig Filter wrench Alternate product: Strap filter wrench Charging hose 60" mm Extension hose with valve 6" mm CAUTION When pressure is applied to the oil pump, the handle may extend rapidly. Note One full stroke oil pump of the handle dispenses 1. Move the pump handle slowly using long, slow, full strokes.
Note The hose fittings contain a core depressor that opens the Schrader valve when the fittings are attached. A backseating control valve can be used to open the Schrader valves on the Compressor Module.
When the knob is turned fully counterclockwise, the core depressor is retracted and the backseating control valve can be installed on a Schrader valve without loss of oil. When the knob is turned clockwise, the core retractor is extended, opening the Schrader valve. High Oil Carryover 1. System is overfilled with oil: The oil level should never reach the top of the primary oil separator top site glass under any operating condition. No back pressure on the discharge when the compressor is turned off resulting in oil foaming and carrying over to the secondary oil separator: Check upper site glass when the compressor is first turned off.
Contaminated or oil saturated secondary oil separator: Replace the secondary oil separator every 8, operating hours, more frequently if the gas is dirty. Clogged or restricted scavenge line orifice: Remove inspect and clean. Clogged or restricted oil scavenge tube: Remove inspect and clean.
Incorrect oil: Use only approved oil. System overfilled with oil. Remove excess oil, replace secondary oil separator. Repair or replace assembly. Clean or replace. Confirm psig or higher backpressure when the compressor is running. Replace oil separator block assembly, scavenge line and secondary oil separator element. If the flow rate is lower than expected even when the Compressor is running properly, this screen may be obstructed. Turn off and isolate the Compressor from all power sources.
Turn off the gas supply. Remove the SAE plug on the side of the inlet block. Remove the screen. Inspect the screen and inside of the block. Clean or replace if necessary. Replace SAE nut. Check for leaks at all fittings that have been disturbed. If this orifice is restricted, the secondstage oil separator can become saturated, increasing oil consumption. Note: image shown is 90 degree orifice.
Procedure is the same for straight orifice. Disconnect the tube and remove the fitting. Inspect the screen. Clean or replace the fitting assembly if necessary. Replace the fitting and reconnect the tube.
Follow applicable safety procedures and codes. Loosen the separator element by turning it counterclockwise with a strap wrench. Remove the separator element. Verify the gasket is removed with the separator. Inspect the separator block for contaminants and remove any debris.
Apply a small amount of oil to the gasket and internal "O" ring on the new separator element. Install the element on the separator block; turn clockwise to tighten. Check for leaks at all fittings that have been disturbed 5.
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