Lennox ECOLEAN EAC 1804SM User Manual

Unit with specic compressor protection
La unidad incorpora compresor con protección especíca
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3.1.- STEPS TO FOLLOW FOR COMMISSIONING THE UNITS
3.- COMMISSIONING AND OPERATION
Before commissioning the unit check the following:
1.- Check that the voltage is the same as the rated voltage on the specication plate.
2.- Check that the supply to the control system is connected in accordance with the electrical diagram (if incorporates)
3.- Check that the main switch is ON (if incorporates).
4.- Make sure that the water connections are correct and have not been altered, as this can result in incorrect operation the ow
divider will not operate if the connections are mixe
5.- Check that the fan can rotate freely.
6.- Check the water pump’s direction of rotation.
7.- Check for air in the water system. Purge if necessary.
8.- The compressor must not be started until the crankcase heater has been running for at least 8 hours.
- The compressor has a single phase electric heating element to assure a separation between the Refrigerant and the oil in the
housing. This heater is activated when the compressor is off and stops working when the compressor is on.
About eight hours before start up or after a long shutdown period, voltage should be supplied to the unit so that this heater will
be activated.
- Check that the compressor starts after two minutes.
- Select cool or heat as the operating mode at the control unit.
- When the compressor starts the fans rotate at maximum speed for a short time. They then rotate in accordance with the
condensation temperature/pressure.
REMEMBER THAT THE COMPRESSOR IS A SCROLL TYPE COMPRESSOR:
Before starting the unit, the compressor should be checked that rotates in the correct direction, through a three phase
protection. Scroll type compressors only compress in one direction of the rotation. Single phase models are always
started up in the proper direction; however, the three phase models, turn in either direction depending on the order of
the power supply phases. Therefore, it is essential that the phase connection for scroll-type three-phase compressors be
carried out correctly (the correct direction of rotation can be checked when the pressure on the suction side decreases
and the pressure on the discharge side increases when the compressor is activated). If the connection is wrong, the
rotation will be reversed causing a high noise level and a reduction in the amount of current consumed. If this occurs,
the compressor’s internal protection system will operate in shutting down the unit. The solution is to disconnect, switch
the wires between two of the phases and connect the three again).
ASTP Protection is included with the unit compressors (except EAC/R 1804 SM models)
- Occasionally, when compressor stops and starts, there is a metallic noise because of spirals of the compressor. This is normal.
- Check compressor oil level, sight glass included (on the sides of the compressor, the level should be between 1/4 and 3/4 in the
sight glass, while during operation the level should be between 3/4 and full).
- Connect high and low pressure gauges and check that operating pressure values are normal.
- Measure electrical consumption for the unit and check that it is near what is indicated on the specication plate.
- Check the electrical consumption of the compressor and the fans with what is specied in the physical data sheets.
- In the case of a Heat Pump unit, make a cycle change on the Control Panel checking that the 4-way valve makes the change
correctly. Check the pressure values in the new cycle.
- Remember the low pressure switch is reset automatically and the high pressure switch is reset manually.
- Remember that low pressure switch is automatic reset, if it has 3 operations in one hour, it will be a manual reset, through
the control of the unit.
ASTP Protection:
This device protects the compressor against high discharge
temperatures.
When the temperature reaches critical values, ASTP
protection causes "Scrolls" are separated. Compressor may
stop pumping with motor running.

Lennox ECOLEAN EAC 1804SM Specifications

General

Brand	Lennox
Model	ECOLEAN EAC 1804SM
Category	Chiller
Language	English