Webasto BCT010300C Repair Manual download pdf (Page 6)

Introduction

Webasto Product N.A., Inc. 4 www.techwebasto.com

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1.4 Vehicle Requirements (Installation Review)

An alternator rated 30Amps above original equipment is required to provide sufficient power to the existing truck

electrical system, installed accessories, and the additional 60 to 67 ampere load of the BlueCool system during system

charging mode.

1.4.1 Electrical Tests - Prior to Troubleshooting and Servicing

Batteries must be in good condition.

Start engine (engine equipped with an alternator 30 amps larger than original equipment)

1) Turn on truck A/C system (front and rear units)

2) Turn on vehicle head lights

3) Turn on any other significant loads used during normal truck operation (accessories)

The DC generator (alternator) output must be a minimum of 14.0 VDC and the difference between Generator

(alternator) and battery voltage measurements must not be greater than 0.5 volts.

A difference greater than 0.5 volts between the generator (alternator) and batteries indicates that the vehicle electrical

system (charging and/or starting) could have potential problems and further tests and services should be performed.

Trucks, other than new, will likely require additional services such as:

• Cleaning of battery connections

• Cleaning of jumpers (bottom of connector typical weak connection point)

• Cleaning of cable connections at starter and DC generator (alternator)

• Cleaning ground connections at frame rails and other points of contact

• Load testing of batteries

1.4.2 Electrical Tests - After Servicing or Repairs

Insure batteries are fully charged prior to starting the BlueCool Truck system. Batteries may have become significantly

discharged due to interior lights on while working in the bunk or due to parasitic loss from live accessories.

Perform voltage drop tests with engine running, all truck accessories turned on and with BCT unit on charge mode.

The difference between battery voltage and the input terminals of the DC to AC power inverter must not be greater

than 0.5 volts.

1.5 Recommended Service Tools

• AC Recovery / Charging Machine - Must be R134a compliant.

• R134a Leak Detector - Must be R134a compliant.

• Dry Nitrogen Gas (Bottled) with Regulator and Safety Relief Device - for Pressure Tests

• Digital Multi-Meter - Should be a good quality V A O meter.

• Digital Thermometer Tester - Core temp. sensor - Now available from Webasto under part # BCT010249A.

• Basic Mechanic’s Tools

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Webasto BCT010300C Repair Manual Page 6