Ingersoll-Rand NVC Series User Manual

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Nirvana Cycling Refrigerated Dryer

Models 3250-8000

Operator’s Manual

Manual Del Operador

ES

Manual do Operador

PT

Manuel De L’opérateur

FR

Operator’s Manual

EN

October 2012

PRINT LANGUAGE

ENGLISH

FRENCH

PORTUGUESE

SPANISH

Table of Contents

Questions and Answers:

L
leonardstevenAug 20, 2025
What to do if my Ingersoll-Rand NVC compressor will not start (no hum)?
- M
  Mary TurnerAug 20, 2025
  If the compressor does not start and there is no hum, consider these potential causes: the line disconnect switch may be open, a fuse may be removed or blown, the overload protector may have tripped, the control may be stuck in the open position, or the wiring may be improper or loose. To address this, close the start or disconnect switch, inspect and replace the fuse if necessary, allow the internal overload to cool and reset (checking motor windings and starting amps), repair or replace the control, and ensure the wiring is correctly connected.
J
jacqueline89Aug 22, 2025
Why does my Ingersoll-Rand NVC unit operate long or continuously?
- A
  Ashley BarkerAug 22, 2025
  Several factors can cause your unit to operate for extended periods. This can occur due to a shortage of refrigerant, control contacts being stuck, the system being inadequate for the load, a restriction in the refrigerant system, or a dirty condenser. To resolve this, fix any leaks and recharge the refrigerant, clean the contacts or replace the control, review the air system parameters, determine the location of any restrictions and correct them, and clean the condenser.
J
Jessica WagnerAug 25, 2025
What to do if my Ingersoll-Rand NVC Dryer compressor starts and runs, but short cycles on overload protector?
- A
  Amanda TorresAug 25, 2025
  If the compressor starts and runs but frequently cycles on the overload protector, it could be due to excessive discharge pressure, a hot compressor with hot return gas, or a shorted winding in the compressor. Check the condenser for dirt, verify the refrigerant charge and correct if needed, and consider replacing the compressor if it has a shorted winding.
K
Kristina Bright PhDAug 26, 2025
What causes my Ingersoll-Rand Dryer to be noisy?
- R
  ruizjaneAug 27, 2025
  A noisy unit can stem from several issues: loose parts or mountings, rattling tubing, a bent fan blade, or worn fan motor bearings. To address this, locate and tighten any loose parts, reform the tubing to prevent contact, replace the fan blade if bent, and replace the motor if the bearings are worn.
G
Gloria ParkerAug 28, 2025
What to do if my Ingersoll-Rand Dryer compressor will start hums but trips on overload protector?
- H
  Holly DuncanAug 28, 2025
  If the compressor hums but trips the overload protector, it could be improperly wired, receiving low voltage, or have motor winding issues (open or shorted). Internal compressor trouble could also be the cause. Check the wiring, determine the reason for low voltage and correct it, and consider replacing the compressor if the motor winding is faulty or there's internal damage.
R
rhondahendersonAug 30, 2025
Why is the suction line frosted or sweating on my Ingersoll-Rand Dryer?
- K
  Kelly RhodesAug 30, 2025
  A frosted or sweating suction line may be caused by the expansion valve passing excess refrigerant, an overcharge of refrigerant, or the expansion valve being stuck open. Inspect the superheat and adjust the valve if necessary, correct the refrigerant charge according to the manual, and clean the valve of any foreign particles, replacing it if needed.
E
Elizabeth BurtonAug 31, 2025
What causes air to bleed from the condensate drain outlet port on my Ingersoll-Rand Dryer?
- A
  anthonyhallSep 1, 2025
  Air bleeding from the condensate drain outlet port is typically due to debris trapped under the seal or damage to the seal itself. To resolve this, press and hold the test button to clear any debris (this will open the drain valve). If the issue persists, replace the seal with a service kit.
K
kleinsamanthaSep 2, 2025
What to do if my Ingersoll-Rand Dryer compressor starts and runs, but short cycles on high or low pressure cut out?
- P
  phillipsaaronSep 2, 2025
  If the compressor starts and runs, but short cycles due to high or low pressure cut-outs, it could be due to several reasons. High pressure cut-outs may be caused by insufficient airflow across the condenser, an overcharge of refrigerant, or insufficient water flow across the condenser. Low pressure cut-outs may be due to an undercharge of refrigerant or a restriction in the expansion valve. For high pressure issues, check the condenser for dirt and proper fan operation, reduce the refrigerant charge if overcharged, and ensure the water circuit is functioning correctly. For low pressure issues, fix any leaks and add refrigerant, or consult the factory before replacing the expansion valve.
E
Elizabeth PorterSep 4, 2025
What does it mean if the liquid line is frosted or sweating on my Ingersoll-Rand NVC?
- M
  Marc ParkerSep 4, 2025
  If the liquid line is frosted or sweating, it indicates a restriction in the filter dryer or condenser. The suggested solution is to replace the part.
J
Joy YoungSep 6, 2025
What does it mean if the condensate drain bowl does not seem to fill with condensate, and the drain does not seem to work due to air locking in my Ingersoll-Rand Dryer?
- N
  Natalie PriceSep 6, 2025
  If the bottom inlet is used, the top port must be used as an air bleed. Connect the top inlet to a higher point in the system, which will function as an air bleed for the drain.

Ingersoll-Rand NVC Series Specifications

General

Brand	Ingersoll-Rand
Model	NVC Series
Category	Dryer
Language	English

Summary

Dryer Receiving and Inspection

Dryer Safety and Operation Precautions

General Safety Guidelines and Notices

Key safety warnings, cautions, and notices for dryer operation and maintenance.

Critical Safety Warnings

Important warnings regarding pressure, voltage, and refrigerant hazards.

Principles of Operation for Refrigerated Dryers

Air System Description

Moisture Removal System Details

Refrigeration System Overview

Details of components handling R-404A refrigerant in the closed-loop system.

Thermal Mass Circulating System

Dryer Controls and Microprocessor System

Overview of the Microprocessor Control and its access levels.

Basic User Interface and Display

Description of the Microprocessor Control display and keypad functions.

Displayable System Parameters

Dryer Set Points and Alarm Configuration

Adjusting Chiller Temperature Set Points

Procedure for adjusting dryer chiller temperature set points for optimal operation.

Alarms and Their Functions

Details of detected alarms, their descriptions, and alarm set points.

Dryer Start Modes

Auto Mode Dryer Start-Up

Dryer Installation and Initial Start-Up

Equipment Location Guidelines

Dryer Offloading and Lifting Procedures

Methods for safely offloading and lifting the dryer unit.

Electrical Connection Procedures

Pre Start-Up and System Leak Check

Procedures for checking dryer installation and system for leaks before start-up.

Initial Dryer Start-Up Procedure

Procedure for the first-time start-up of the dryer after installation.

General Start-Up Procedures

Procedures for starting the dryer after initial set-up.

General Start-Up: Auto Mode (Local Operation)

Procedure for automatic operation of all dryer modules locally.

General Start-Up: Remote Mode

Scheduled Maintenance for Air Dryers

Technician Mode Operations and Settings

Entering Technician Mode

Alarm List Access for Troubleshooting

Troubleshooting Common Dryer Issues

Problem and Action Guide

Guide to identifying common problems and their corrective actions.

Wiring Diagrams and Schematics

General Arrangement and Dimensions

Replacement Parts List

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