REEFERTEC Technicians Group

Thursday, November 26, 2015

Carrier data cable connection direct from controller

Feature of 69nt40 561-XXX

In contrast to the EliteLINE the following machinery changes were incorporated into the unit.
• The thermal expansion valve is replaced with the electronic expansion valve which controls the superheat leaving the evaporator, based on the inputs from the evaporator temperature sensor and the primary suction pressure transducer.
• Three phase evaporator motors with new evaporator fans and stators were added.
• An exclusive R134a compressor with a digital unloader valve was added.
• Anew (deeper) 4 Row E-coated condenser coil was added.
• The Suction Modulation valve and the Suction Unloader valve were removed from the unit.
• The Liquid Injection Valve was changed from normally open LIV to normally closed.

Wednesday, November 25, 2015

Alarm 53 (battery pack failure).

TechFact – Battery Pack Starting with software releases 5135 (recip) and 5324 (scroll), a battery pack missing feature has been rolled into the AL53 alarm. When the container unit is configured to have a rechargeable battery pack, a flag (notation) is written into the controller. If the wiring for the battery pack is damaged, or the battery pack is stolen, then the controller will raise the AL53 code. In the case of a stolen battery pack, where no replacement is available, the active code AL53 can be cleared by holding down the ALT key at the beginning of the battery test using (CD19). Once the alarm, is cleared the controller will not display the AL53 until a replacement battery voltage is sensed. Once voltage is sensed the feature will again become active. Note, on initial installation of the software where no battery is found, the controller will immediately display an AL53. By following the procedure for disengagement, the alarm can be deactivated and will remain deactivated until a battery is again sensed.
G. Barkowski