Carrier 38AKS012 Anleitung zur Fehlerbehebung PDF herunterladen

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111 Catalog No. 533-80003 Printed in U.S.A. Form 38A-9SI Pg 1 5-01 Replaces: 38A-8SI

Book 1 4

Ta b 3 a 2 a

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Step 1 — Complete Pre-Installation Checks

. . . . . . 1

• UNCRATE UNIT

• INSPECT SHIPMENT

• CONSIDER SYSTEM REQUIREMENTS

Step 2 — Rig and Mount the Unit

. . . . . . . . . . . . . . . . . 4

• RIGGING

• COMPRESSOR MOUNTING

Step 3 — Complete Refrigerant Piping

Connections

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

• SIZE REFRIGERANT LINES

• FILTER DRIER AND MOISTURE INDICATOR

Step 4 — Make Electrical Connections

. . . . . . . . . . . 6

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11

Preliminary Checks

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compressor Rotation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Evacuate and Dehydrate

. . . . . . . . . . . . . . . . . . . . . . . . . 9

Refrigerant Charge

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compressor Overload

. . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cycle-LOC™ Device (CLO)

. . . . . . . . . . . . . . . . . . . . . . 10

Low-Pressure/Loss-of-Charge Switch (LPS)

. . . . . 10

High-Pressure Switch (HPS)

. . . . . . . . . . . . . . . . . . . . . 10

High Flow Valves

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Refrigerant Service Ports

. . . . . . . . . . . . . . . . . . . . . . . 10

Cooling

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Sequence of Operation

. . . . . . . . . . . . . . . . . . . . . . . . . . 10

Oil Charge

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11,12

Cleaning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Lubrication

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Condenser-Fan Adjustment

. . . . . . . . . . . . . . . . . . . . . 11

Capacity Control — Unit 38AKS012 Only

. . . . . . . . 12

Compressor Removal

. . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Crankcase Heater (Except 38AK007)

. . . . . . . . . . . . 12

TROUBLESHOOTING GUIDE

. . . . . . . . . . . . . . . . . .13,14

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be

hazardous due to system pressure and electrical components.

Only trained and qualified service personnel should install or

service air-conditioning equipment.

When working on air-conditioning equipment, observe pre-

cautions in literature and on tags and labels attached to unit.

NOTE: Ensure voltage listed on unit data plate agrees with

electrical supply to unit.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for brazing operations. Have fire

extinguisher available. Read these instructions thoroughly.

Consult local building codes and National Electrical Code

(NEC) (U.S.A. Standard) for special installation requirements.

INSTALLATION

The 38AK007, 008, and 012 units use hermetic compres-

sors. The 38AKS008, 009, and 012 units use semi-hermetic

compressors. See Table 1A or 1B for physical data.

Step 1 — Complete Pre-Installation Checks

UNCRATE UNIT (See Fig. 1) — Remove unit packaging

except for the top skid assembly and wood bumpers, which

should be left in place until after unit is rigged into place.

INSPECT SHIPMENT — File claim with shipping company

if shipment is damaged or incomplete.

Before installing or servicing system, always turn off main

power to system and install lockout tag on disconnect.

There may be more than one disconnect switch. Electrical

shock can cause personal injury.

38AK007,008,012

38AKS008,009,012

Air-Cooled Condensing Units

50/60 Hz

Fig. 1 — Model 38AK (Size 007 Shown)

1 2 3 4 5 6 ... 15 16

Inhaltsverzeichnis

Seite 1 - Service Instructions

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

Seite 2

10Compressor Overload — This overload interruptspower to the compressor when either the current or internalmotor winding temperature becomes excessive

Seite 3

11Oil Charge (Tables 1A and 1B)38AKS UNITS — Allow unit to run for about 20 minutes.Stop unit and check compressor oil level. Add oil only if neces-sa

Seite 4

12Capacity Control — Unit 38AKS012 Only — Asuction pressure-actuated unloader controls 2 cylinders andprovides capacity control. Unloaders are facto

Seite 5 - Fig. 3 — Rigging Label

13TROUBLESHOOTING GUIDENOTE: See Fig. 15 for component arrangements.SYMPTOM CAUSE REMEDYCompressor does not run — Contactor openPower off. Restore pow

Seite 6

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

Seite 7 - Table 5 — Electrical Data

START-UP CHECKLISTI. Preliminary InformationOUTDOOR:MODEL NO. _______________________________ SERIAL NO. ____________________________________INDOOR:A

Seite 8

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

Seite 9 - Refrigerant Charge —

2Table 1A — Physical Data — 50/60 Hz (English)LEGENDNEMA — National Electrical Manufacturing Association*Unit is factory supplied with holding charge

Seite 10

3Table 1B — Physical Data — 50/60 Hz (SI)LEGENDNEMA — National Electrical Manufacturing Association*Unit is factory supplied with holding charge only.

Seite 11 - Lubrication

4CONSIDER SYSTEM REQUIREMENTS• Consult local building codes and NEC for special instal-lation requirements.• Allow sufficient space for airflow cleara

Seite 12 - Compressor Removal —

5UNIT 38 DIM. A DIM. B DIM. C DIM. D DIM. E DIM. FAK0071′-61/2″[470.0]1′-23/4″[375.0]——1′-21/4″[362]1′-45/16″[415]2′-95/16″[846.5]AK0081′-8″[508.0]1′-

Seite 13 - TROUBLESHOOTING GUIDE

6FILTER DRIER AND MOISTURE INDICATOR — The fil-ter drier is factory installed. Moisture indicator is field-suppliedand should be installed just after

Seite 14 - Ta b 3 a 2 a

7Table 5 — Electrical DataLEGENDNOTES:1. In compliance with NEC requirements for multimotor and combi-nation load equipment (refer to NEC Articles 430

Seite 15 - II. Pre-Start-Up

8FIELD CONTROL WIRING — Install a Carrier-approvedaccessory thermostat assembly according to installationinstructions included with the accessory. L

Seite 16 - III. Start-Up

9START-UPPreliminary Checks1. Field electrical power source must agree with unit name-plate rating.2. Check that all internal wiring connections are t

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Inhaltsverzeichnis

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