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Make/Model Information:

  • Brand:   Denso
  • Models included:
    • Denso HVAC for Recreational Vehicles

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   83
  • File size:  ∼ 4.29 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ENDE-0013

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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Heating, Ventilation, and
Air Conditioning System
Service Manual for
Recreational Vehicles
This manual applies to vehicles
using HFC-134a refrigerant ONLY.
TABLE OF CONTENTS
GENERAL INFORMATION
1. The Purpose of Air Conditioning
2. Technical Terms
3. Change of State
4. The Relationship Between Pressure and Temperature
5. Basic Theory of Cooling
6. Refrigerant
7. Principles of Air Conditioning
8. Automotive Refrigeration System
SAFETY PRECAUTIONS
1. Safety Precautions
2. Ultraviolet Rays and Ozone Layer
TOOLS AND EQUIPMENT
1. Service Tool Kit
2. Handling of Service Tools
3. Robinair Enviro Charge 34700 Series
TORQUE AND BOLT SPECIFICATIONS
1. Standard Torque: Coupling Nut Type Fittings
2. Torque Specification for Bolts/Nuts/Screws
COMPONENT LOCATIONS AND POSITIONS
1. Interior Component Locations (All Models)
2. Raised Floor Measurements and Cutouts
TROUBLESHOOTING
1. Troubleshooting Table
2. Troubleshooting by Manifold Gauge
3. Visual and Audible Troubleshooting Questions
4. Troubleshooting Chart
5. Insufficient Cooling
6. Abnormal Noise
COMPONENT TESTING
1. Blower/Cooling Unit
2. Compressor Fitting
3. Refrigerant Hoses/Tubes
4. Heater Hoses: On Vehicle Inspection
5. Heater
6. Thermostat
7. A/C Control System: On Vehicle Inspection
8. Control Panel Removal
9. Pressure Switch
10. Blower
11. Relays
12. Air Intake Servo
13. Vent Mode Servo
TABLE OF CONTENTS
REFRIGERANT LINE REPLACEMENT
1. On Vehicle Inspection
2. Refrigerant Lines Replacement
3. Torque Specifications
4. CHASSIS
REFRIGERANT CHARGING
1. About Certification
2. Section 609 of the Clean Air Act Amendments of 1990
3. Evacuating and Charging Refrigerant
4. Refrigerant Volume
5. Performance Test
WIRING DIAGRAMS
TOOLS AND EQUIPMENT
low pressure gauge
(schrader valve must be opened)
high pressure gauge
low pressure gauge
(schrader valve must be opened)
high pressure gauge
low pressure gauge
high pressure gauge
Service Tool and Testers
1. Service Tool Kit
A. Recovery/Recycling/Recharging Machine
B. Refrigerant Charging Hoses
C. Refrigerant Leak Tester
2. Handling of Service Tools
A. Manifold Gauge Set
NOTE: When recovery/recycling/recharg-
ing equipment such as a Robinair Enviro
Charge Series 34700 or equivalent is used,
the manifold gauge set is included with the
system.
The hand valves (“LO” and “HI”) on the
manifold gauge set are used to open and
close the valve. The hand valve inscribed
“LO” is for the low pressure side valve and
“HI” is for the high pressure side valve.
(Fig. 31)
By opening or closing the high and low
pressure hand valves, the following
circuits are established.
1) When low pressure side valve (“LO”) is
opened and high pressure side valve
(“HI”) is closed.
2) When low pressure side valve (“LO”) is
closed and high pressure side valve
(“HI”) is opened.
Two circuits are established:
3) When low and high pressure gauges
are closed.
Two circuits are established:
B. Refrigerant Charging Hose
The charging hoses are classified into
three colors.
Each charging hose must be handled as
follows:
1) The air conditioner manufacturer
recommends that the blue hose is
used for the low pressure side (suction
side), the green hose for refrigeration
side (center connecting port) and the
red hose for high pressure side
(discharge side).
2) HFC-134a charging hoses are
equipped with service couplers, which
allow you to install your charging
hoses to the charging valve on the
vehicle. These service couplers are
available from Robinair.
Figure 30: Charging Station
Figure 31: Manifold


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