Frick SGXH-4021 User Manual

This manual contains rigging, assembly, start-up, and maintenance
instructions. Read thoroughly before beginning installation. Failure
to follow these instructions may result in personal injury or death,
damage to the unit, or improper operation.
SGC/SGX
ROTARY SCREW COMPRESSORS
MODELS:
SGC 1913-2824, SGCB/H 3511-3519,
Original SGXB 3519-3524, SGXH 3519, and 4013-4021
Check www.FrickCold.com for the latest version of this publication.
Form 070.650-IOM (JUL 2019)
INSTALLATION - OPERATION - MAINTENANCE
File: SERVICE MANUAL - Section 070
Replaces: 070.650-IOM (AUG 2015)
Dist: 3, 3a, 3b, 3c

Frick SGXH-4021 Specifications

General

Model	SGXH-4021
Manufacturer	Frick
Phase	3
Refrigerant	R717 (Ammonia)
Frequency	60 Hz

Summary

Preparing Compressor for Storage

Stepless Capacity Control

SGC 1913/1918 Port Locations

SGC 2813/2817 Port Locations

Port Identification and Specifications

Diagram and table detailing ports for SGC 2813/2817.

Oil System Requirements

Oil Pressure Requirements

Details critical oil pressure requirements for compressor operation and longevity.

Balance Piston Oil Requirements

Specifies oil requirements and regulations for balance pistons in SG compressors.

Compressor with Squeeze Film Damper (SFD)

SFD Oil Requirements

Explains oil requirements for SFDs to prevent vibration and ensure proper operation.

Operation and Start-Up Instructions

Initial Start-Up Procedure

Steps for safely starting up the compressor unit for the first time.

Normal Start-Up Procedure

General Maintenance

Maintenance Safety Precautions

Changing Oil

Step-by-step guide for changing compressor oil and filters.

Recommended Maintenance Program

Maintenance Schedule

Recommended Maintenance Intervals

Schedule of recommended maintenance operations based on hours or time.

Troubleshooting Guide

Abnormal Operation Analysis

Four logical steps to analyze and correct abnormal compressor operations.

Troubleshooting the SGC Compressor

SGC Compressor Symptom Resolution

Common symptoms and probable causes/corrections for SGC compressors.

Troubleshooting the Hydraulic System

Troubleshooting common symptoms related to the hydraulic system.

Compressor Replacement and Shutdown

Bare Compressor Field Replacement

Oil Pressure Shutdown Cause

Explains why improper oil pressure causes compressor shutdown.

Rotary Screw Compressor Operating Log Sheet

Operating Log Sheet Fields

Compressor Prestart Checklist

Mechanical Checks Prior to Startup

List of mechanical checks to be completed before Field Service Supervisor arrival.

Startup Supervisor Verification

Items verified by the Startup Supervisor for a smooth start-up.

Drive Train Alignment

Alignment Procedure and Data

Steps and data recording for performing drive train alignment.

Vibration Data Sheet

Vibration Data Recording