Carrier 19DA User Manual

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Carrier
Start-Up instructions
19DA
OIL HEATER INDICATOR LIGHT
OSso/c/e. ‘»nd oo /or7^er
S//ó/^/ z^k^/ {do record r) {
dr^'^S fcr /~o ôhiio/ô/e {ak)/o^ ZiÂ* )
MOTOR
ROTATION
SIGHT GLASS
LOW OIL PRESSURE
SWITCH
OIL LEVEL SIGHT GLASS
OIL TEMPERATURE GAGE
CONDENSER HIGH-PRESSURE
OIL PRESSURE
GAGE
OIL CHARGING
VALVE
eX
OIL PUMP JL,
ASSEMBLY^
---------------------
a
f—?iii;
ANTIRECYCLE
TIMER (HIDDEN)
COOLER
CHARGING
VALVE
OIL THERMOSTAT
(HIDDEN)
REFRIGERANT
LOW TEMP CUTOUT
Fig. 1 - 19DA Hermetic Refrigeration Machine
INTRODUCTION
General - Use this booklet as a guide for initial
start-up of the 19DA Hermetic Centrifugal Re
frigeration Machine. Read and fully understand
these instructions plus all necessary Job Data
before beginning initial start-up. Instructions are
given in the proper sequence for optimum ma
chine performance.
Job Data Required
1. Machine assembly prints
2. Wiring diagrams
3. Starter details
4. 19DA Installation Instructions
5. 19DA Operation and Maintenance Instructions
Equipment and Materials Required
1. Mechanics' tools
2. Volt-ohmmeter
3. Carrier refrigerant drum charging valve
4. 5/8" SAE X 3/4" MPT cooler charging adapter
5. Five to ten ft of copper tubing or plastic hose
6. Halide or electronic leak detector
7. Low-pressure indicator
a. Absolute pressure manometer
b. Wet-bulb indicator
8. Clamp-on ammeter
9. Portable dehydration pump
INITIAL PREPARATIONS
CAUTION: Do not operate refri^rant pump
unless machine is charged with refrigerant.
Do nor start compressor or oil pump, even for
a rotation check, while machine is at vacuum.
Check rotation only after compressor has been
charged with oil and machine has been charged
with refrigerant.
Machine Tightness - A shipping vacuum was ap
plied to the refrigerant side of the 19DA machine
before shipment from the factory. Over a period
of time, during shipment or storage, part of this
vacuum may be lost. The loss of a small amount
of vacuum may be acceptable and within Carrier's
machine tightness standards. To determine if the
vacuum loss is acceptable or not requires the
following steps:
© Carrier Corporation 1966
Form 19DA-1SS
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Summary of Contents

Page 1 - Start-Up instructions

CarrierStart-Up instructions19DAOIL HEATER INDICATOR LIGHTOSso/c/e. ‘»nd oo /or7^er S//ó/^/ z^k^/ {do record r) {dr^'^S fcr /~o ôhiio/ô/e {ak)/o

Page 2 - DO NOT EXCEED TEN PSI

1 ELECTRONIC CONTROL ON-OFF SWITCH 112 MACHINE START BUTTON 123 CHILLED WATER THERMOSTAT 134 MACHINE STOP BUTTON 145 OIL PUMP AUTO-MANUAL SWI

Page 3

Calibrating Pneumatic Transducer - Pneumatic control is accomplished by a transformer which converts a 3-15 psi pneumatic signal regul

Page 4 - Table 1 - Charging Quantity

INSTRUCTING THE CUSTOMER OPERATORUse the following as a guide in giving operating instructions to the customer operator:1. Be sure that the cust

Page 5 - -TEMPERATURE ADJUSTMENT

PURGE VALVE OPERATION PLATEPURGE PUMP SWITCHCHILLED WATER LOW TEMP CUTOUTPURGE OPERATING VALVES (6)Fig. 2 - 19DA Rear View1.2.Record and date vacuu

Page 6

5. Repair any leaks found.6. Reinspect joints and flanges with the leak detector to ensure that all leaks have been found and repair

Page 7

Check Starter - Before starting the 19DA, check starter as follows:1. Remove the contactor arc chutes. Be sure contactors move freely

Page 8

.fCheck Operation of Safety Controls - Disconnect main motor leads at starter to prevent compressor motor operation while performing

Page 9 - Fig. 4 - Honeywell Controls

Table 2 - Setting Safety Controls (Contd)SAFETY OR CONTROL DEVICE RECOMMENDED SETTING2. Refrigerant Low-Temperature Cutout (Fig. 1)1. Install jumper

Page 10

Table 3 - Motor Overload ModuleCalibrating Electronic Controls - Honeywell (Fig. 4) or Barber-Colman (Fig. 5)SEQUENCEHB-CPROCEDURE1. Check Voltage Sig

Page 11 - CONTROL AIR

Calibrating Electronic Controls - Honeywell Only (Fig. 4)Table 4 - Chilled Water ModuleSEQUENCEPROCEDURE (Compressor Operating)1. Set Differential Adj

Page 12

1 ELECTRONIC CONTROL ON-OFF SWITCH a MACHINE START BUTTON3 VANE DECREASE BUTTON4 CHILLED WATER THERMOSTAT5 VANE INCREASE BUTTON6 MACHINE STOP BUT

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