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CC335/CC355 Air Conditioning System Operation Manual CC335SL / CC335DL / CC355 02/2013 To receive the best performance from the air conditioning system, we P.N. 10000035A suggest carefully reading this manual before operating the unit. Keep this manual in the vehicle for future reference.
CC335/CC355 Table of Contents Page INTRODUCTION………………………………………………………………………………. SAFETY PRECAUTIONS……………………………………………………………………... 3 SPECIFIC WARNINGS………………………………………………………………………... 4 1 - EQUIPMENT GENERAL ARRANGEMENT………………………………………………… CC335 / 355 AIR CONDITIONER COMPONENTS……………………………….. 1.1 - 2 - CONTROLS AND INDICATORS……………………………………………………………... FUNCTION OF THE MANUAL CONTROL PANEL……………………………….. 2.1 - MANUAL CONTROL AC REGULATION…………………………………………… 2.2 - FUNCTION OF THE DIGITAL CONTROL PANEL…………………………………...
CC335/CC355 INTRODUCTION At Spheros, we develop our products with the goal of providing a comfortable environment for vehicle passengers. We are always looking for the best air condition concepts that provide the highest performance at the best possible value. The compact systems are simple to operate and provide high cooling capacities at low noise levels.
CC335/CC355 SAFETY PRECAUTIONS GENERAL SAFETY NOTICES The following safety notices supplement warnings and cautions appearing elsewhere in this manual. The following are recommended precautions that must be understood and applied during operation and maintenance of the equipment. Failure to adhere to warnings and cautions may result in damage to equipment, fire, personal injury and even death. OPERATING PRECAUTIONS Keep hands, clothing and tools clear of the evaporator and condenser fans.
CC335/CC355 SPECIFIC WARNINGS AND CAUTIONS WARNING Be aware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate. WARNING The refrigerant contained in the air conditioning system when in direct contact with skin and eyes can cause frostbite, severe burns or blindness.
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CC335/CC355 SPECIFIC WARNINGS AND CAUTIONS WARNING Do not use a nitrogen cylinder without a pressure regulator. Do not use oxygen in or near a refrigeration system as an explosion may occur. WARNING The filter-drier may contain liquid refrigerant. Slowly open the fitting nuts and avoid contact with exposed skin or eyes.
CC335/CC355 1. Equipment General Arrangement 1.1 CC335 / CC355 Air Conditioner Components The CC335 / CC355 air conditioner and its main components are shown in Fig. 1. 1. Condenser Fan 2. Condenser Coil 3. Filter Drier 4. Globe Valve 5. Receiver 6.
CC335/CC355 2. Controls and Indicators 2.1 Functions of the Manual Control Panel The air conditioner control panel (one for single loop system and two for dual loop system) has two rotary switches, one for the blower speed (E) and one for the temperature adjustment (G).
CC335/CC355 2.2 Manual Control AC Regulation AC Regulation The A/C regulation is based on the difference between the actual cabin temperature and the set value. This is Illustrated in Figure 3 Fig. 3: AC Regulation Cooling (activated A/C Compressor Clutch and Condenser Fans) starts only after the temperature difference exceeds 1.8°F/1°C and stops when the cabin temperature difference is 1.8°F/1°C less than the set value.
CC335/CC355 2.3 Functions of the Digital Control Panel The air conditioner control panel has a main CPU and a keyboard to control the operation of the system and provides visual display of operation status. The control panel and its controls and indicators are shown in Fig. 4. Numeric Display Cooling Control Key A/C On LED...
CC335/CC355 2.4 Function of Electronic Control and Indicators The function of the controls and indicators is shown in Fig. 5. Note: All keys have backlit red LED’s, Index Fig. 2 Control / Indicator Setting / Indication Function Display °F Ignition on, system in standby for activation by pressing Auto Key.
CC335/CC355 3. Equipment Operation 3.1 Command Description – Normal Operation Display The two digit numeric display is used for informing the operator about the selected set temperature. Set-Point The set-point is the desired temperature inside the vehicle. The actual selected set point temperature blinks and may be adjusted by pressing the keys.
CC335/CC355 3.2 Command Description – Failure Operation Failure Operation – Control Panel Functions The system indicates failure codes on the display. The possible failure codes and their meanings are shown in Fig. 6. Failure Possible Cause Check and Correct Pressure switch failure Check pressure switch Anti-Icing Thermostat Check anti-icing thermostat...
CC335/CC355 3.3 Electrical Malfunctions The individual circuits are to be checked systematically in accordance with the wiring diagram. The plug connections and electrical components such as switches, relay, etc. should be checked. The following are possible causes of electrical malfunctions and should always be checked first so they can be excluded as the cause of the failure: Corroded plug contacts Loose plug contacts...
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CC335/CC355 Check the refrigerant charge in the system: After the air conditioning system has been operating for approx. 5 min. with the electromagnetic clutch activated and the engine running at a rapid idle, the refrigerant should flow through the sight glass without forming any bubbles. During the cold season: To prevent the shaft seal of the compressor from drying out and leaking, operate the air conditioning system for approx.
The proper handling of the system including proof of the service activities record is a prerequisite for acceptance of any warranty claims in the event of damage to parts subject to maintenance. Warranty replacement parts and out of warranty replacement parts must be supplied by Spheros Climate System, LLC to assure the quality and reliability of the product.
CC335/CC355 4.2 Preventive Maintenance Schedule All preventive maintenance described below is based on typical operating conditions. The frequency outlined below is for normal operating conditions and should increase if used under more sever conditions. COOLING CIRCUIT MONTHLY QUARTERLY ANNUALLY Measure and record the refrigerant pressures and temperatures of the suction line Measure and record the refrigerant pressures and temperatures of the liquid line Visually inspect for signs of oil or refrigerant leaks After 15 minutes of operation check refrigerant level using the sight glass...
CC335/CC355 IMPORTANT: The return air filter and the condenser coil must be checked and cleaned weekly. As a rule, the air ducts must be cleaned every 3 months and more frequently depending on operating times of the system, the number of passengers and the severity of the environmental conditions.
CC335/CC355 6. Failure Diagnosis Table As a troubleshooting aide, the table in Fig. 8 lists possible failure symptoms, possible causes and solutions to assist in correcting the problem. Symptoms Possible Cause Solution Compressor does not work Fuse or relay defective Replace fuse or relay Magnetic clutch burned Replace clutch...
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CC335/CC355 Symptoms Possible Cause Solution AC does not cool and Low on refrigerant charge Check for leaks, adjust charge Compressor remains on Non-Condensables in system Evacuate the unit to 1000 microns or less and adjust charge to correct amount Plugged or defective expansion valve Replace the expansion valve Dirty evaporator coil Clean the coil...
CC335/CC355 7. Electrical Schematics of Relay Board for Manual Control Panel 7.1 Relay and Fuse Locations RELAY FUNCTION TYPE FUSE FUNCTION TYPE Blower Fan 1 – High Speed ISO8820 – 5A Relay Coils Blower Fan 3 – High Speed ISO8820 – 10A Condenser Clutch Blower Fan 2 –...
CC335/CC355 8 Electrical Schematic for Digital Control Panel and Relay Board 8.1 Digital Control Panel Note: 4 pressure switches for dual loop 6-ALTERNATOR D+ 1-EVAPORATOR FAN LOW 7-+12V / +24V 2-GND 8-PRESSURE SWITCH 3-CONDENSER FAN 9-TEMPERATURE SENSOR 4-EVAPORATOR FAN HIGH 5-INTERNAL TEMPERATURE SENSOR...
CC335/CC355 `12` 8.3 Wiring Schematic for GL-R1HSP002 (12V) Relay Board with GL-P1HSP002 Digital Control Panel GL-P1HSP002 Note: 4 pressure switches for dual loop.
CC335/CC355 8.4 Relay Board GL-T047 (24V) Layout - CC355 SL Condenser Fan 1 Evaporator 1 LO Condenser Fan 2 Evaporator 2 LO Condenser Fan 3 Evaporator 3 LO Compressor Clutch N.C. Fresh Air N.C. Alternator D+ N.C. Condenser Fan 6 Evaporator 6 LO Condenser Fan 5 Evaporator 5 LO...
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