Carrier SUPRA 950Mt User manual

Truck Refrigeration
OPERATOR’S MANUAL
For
Supra 950MT
Truck Refrigeration Units
62-11491 Rev A

OPERATOR’S MANUAL
For
Supra 950MT
Truck Refrigeration Units
© 2016 Carrier Corporation ●Printed in USA January 2016

62-11491
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRE-TRIP INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
UNIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
STARTING UNIT - ENGINE/ROAD OPERATION . . . . . . . . . 6
STARTING UNIT - STANDBY OPERATION . . . . . . . . . . . . . 7
START/STOP OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 9
CONTINUOUS RUN OPERATION . . . . . . . . . . . . . . . . . . . . 11
CHANGING SETPOINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
MANUAL DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FUNCTION CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ALARM DISPLAY & RESET . . . . . . . . . . . . . . . . . . . . . . . . . 18
STOPPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PRODUCT LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
RECOMMENDED TRANSPORT TEMPERATURES . . . . . . 23
TROUBLESHOOTING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . 24
CONTROL BOX COMPONENTS . . . . . . . . . . . . . . . . . . . . . 26
MULTI-TEMP SUB PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . 28
RELAY BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
UNIT MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
UNIT MAINTENANCE SCHEDULE . . . . . . . . . . . . . . . . . . . 31
EMERGENCY ROAD SERVICE . . . . . . . . . . . . . . . . . . . . . . 34

1 62-11491
INTRODUCTION
This guide has been prepared for the operator of Carrier Transicold diesel
truck refrigeration units. It contains basic instructions for the daily
operation of the refrigeration unit as well as safety information,
troubleshooting tips, and other information that will help you to deliver the
load in the best possible condition. Please take the time to read the
information contained in this booklet and refer to it whenever you have a
question about the operation of your Carrier Transicold Supra unit.
Your refrigeration unit has been engineered to provide long, trouble-free
performance when it is properly operated and maintained. The checks
outlined in this guide will help to minimize over-the-road problems. In
addition, a comprehensive maintenance program will help to insure that
the unit continues to operate reliably. Such a maintenance program will
also help to control operating costs, increase the unit’s working life, and
improve performance.
This guide is intended as an introduction to your unit and to provide
general assistance when needed. More comprehensive information can
be found in the Operation and Service Manual for your unit. This manual
can be obtained from your local Carrier Transicold dealer.
When having your unit serviced, be sure to specify genuine Carrier
Transicold replacement parts for the highest quality and best reliability.
At Carrier Transicold, we are continually working to improve the products
that we build for our customers. As a result, unit specifications may
change without notice.

62-11491 2
UNIT IDENTIFICATION
Each Supra 950MT unit is identified by a nameplate attached to the frame
near the accumulator. This nameplate identifies the complete model
number of the unit, the serial number, the refrigerant charge and quantity,
and the date the unit was placed in service.
If a problem occurs, please refer to the information on this plate, and
make a note of the model and serial number before calling for assistance.
This information will be needed when you contact a technician or Carrier
Transicold Service Engineer so that he or she may properly assist you.
NAMEPLATE

3 62-11491
SAFETY
The Supra 950MT has been designed with the safety of the operator in
mind. During normal operation, all moving parts are fully guarded to help
prevent injury. During all pre trip inspections, daily inspections, and
problem troubleshooting, you may be exposed to moving parts. Please
stay clear of all moving parts when the unit is in operation and when the
unit main power switch is in the RUN (I) position.
WARNING
!
Unit may start automatically at any time even if the
switch is in the OFF position. Use proper lockout/tagout
procedures before inspection/servicing. All unit inspec-
tion/servicing by properly trained personnel only.
WARNING
!
Under no circumstances should ether or any other
starting aids be used to start the engine.
AUTO-START/STOP
When the unit is set for Auto-Start/Stop operation it may start at any time
and without warning. When performing any check of the refrigeration unit,
ensure that the main power switch is in the OFF (O) position.
ENGINE COOLANT
The engine is equipped with a pressurized cooling system. Under normal
operating conditions, the coolant in the engine and radiator is under high
pressure and is very hot. Contact with hot coolant can cause severe
burns. Do not remove the cap from a hot radiator. If the cap must be
removed, do so very slowly in order to release the pressure without spray.
REFRIGERANTS
The refrigerant contained in the refrigeration system can cause frostbite,
severe burns, or blindness when in direct contact with the skin or eyes.
For this reason, and because of legislation regarding the handling of
refrigerants during system service, we recommend that whenever your
unit requires service of the refrigeration system, you contact your nearest
Carrier Transicold authorized repair facility for service.
BATTERY
This unit utilizes a lead-acid type battery. The battery normally vents small
amounts of flammable hydrogen gas. Do not smoke when checking the
battery. A battery explosion can cause serious physical harm and/or
blindness.

62-11491 4
PRE-TRIP INSPECTION
BEFORE STARTING ENGINE
1. Drain water and sediment from fuel tank sump and then fill tank
with diesel fuel.
2. Check radiator coolant level. Add pre-mixed 50/50 permanent
antifreeze-water as required.
3. Check evaporator and condenser coil for cleanliness.
4. Check engine oil level, lubrication and fuel filter, oil lines, and
connections for leaks. Tighten connections and/or replace gaskets.
5. Check compressor and receiver service valve position (backseat
position).
6. Check unit compartment and remove any foreign material.
7. Check V-belts for proper tension, fraying or cracks. Adjust belt or
replace.
WARNING
!
Inspect battery cables for signs of wear, abrasion or
damage at every pre trip inspection and replace if nec-
essary. Also check battery cable routing to ensure that
clamps are secure and that cables are not pinched or
chafing against any components.
AFTER STARTING REFRIGERATION UNIT
1. Check engine speed and listen for abnormal noises.
2. Check compressor oil level.
3. Observe any signs of lube or fuel oil leaks.
4. Check radiator hoses for leaks.
5. Check refrigerant level.
6. Feel filter drier. Excessive temperature drop across drier indicates
restriction.
7. Check water temperature. It should be between 150 to 180°F (65 to
82°C).