Cold Jet PR750H User manual

PR750H Pelletizer
USER MANUAL
Original Instructions [English] 25-05-2023 Rev 5

Copyright © 2023 Cold et, DK
All rights reserved. Printed in the Denmark.
DUE TO CONTINUED PRODUCT DEVELOPMENT THIS INFORMATION MAY CHANGE WITHOUT
NOTICE. THE INFORMATION AND INTELLECTUAL PROPERTY CONTAINED HEREIN IS
CONFIDENTIAL BETWEEN COLD ET AND THE CLIENT AND REMAINS THE EXCLUSIVE PROPERTY
OF COLD ET. IF YOU FIND ANY PROBLEMS IN THE DOCUMENTATION, PLEASE REPORT THEM TO
US IN WRITING. COLD ET DOES NOT WARRANT THAT THIS DOCUMENT IS ERROR-FREE.
NO PART OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM, OR
TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC, MECHANICAL, PHOTOCOPYING,
RECORDING OR OTHERWISE WITHOUT THE PRIOR WRITTEN PERMISSION OF COLD ET.
THIS MANUAL REFLECTS THE PRODUCT CONFIGURATION AS WAS CURRENT AT THE TIME OF
ITS WRITING. AN ITEM’S DISPLAY IN THIS MANUAL DOES NOT GUARANTEE THE ITEM’S
AVAILABILITY AT ANY TIME IN THE FUTURE. IMAGES SHOWN ARE FOR REPRESENTATION
PURPOSES ONLY. PRODUCTS MAY VARY FROM THE IMAGES DISPLAYED. COLD ET IS NOT
LIABLE FOR TYPOGRAPHICAL ERRORS OR CHANGES TO SPECIFICATIONS PRESENTED.

PR750H
User manual
Version: 5
Page: 2 of 21
Date: 2023.05.25
CONTENT
INTRODUCTION 4
•
About the PR750H Pelletizer 4
SYSTEM DESCRIPTION 5
•
Functional description 5
•
System identification 6
•
Supplier responsible for the equipment 6
TECHNICAL DATA 7
SAFETY REGULATIONS
•
General Measures 8
•
Personnel Qualifications 8
•
Security and Risk 8
•
Danger of Suffocation 9
•
Static Electricity 9
•
Danger of Congelation 10
•
Pinch Point Hazard 10
•
Wear Protective Gloves 10
SAFETY OPERATION 11
•
Emergency stop 11
•
Machine safety 11
•
Liquid CO2 Leakage 11
•
Stop Production 11
•
Daily checkup before start-up 11
MACHINE STRUCTURE 12
MACHINE CONTROLS 13
•
PR750H HMI Screen 13
•
User Level HMI Screen. 17
REPAIR AND WARRANTY 19
•
Repair 19
MAINTENANCE 19
•
Degassing system: 19
•
Hydraulic station: 19
•
Safety device replacement intervals 19
•
Terms of Warranty 20
•
Cleaning the PR750H 20
INSTRUCTION – UNPACKING AND PREPARATIONS BEFORE INSTALLATION 22
•
End of life for the PR750H 24

PR750H
User manual
Version: 5
Page: 3 of 21
Date: 2023.05.25

PR750H
User manual
Version: 5
Page: 4 of 21
Date: 2023.05.25
INTRODUCTION
This manual should be kept with the owner and be readily accessible for operation and maintenance. This manual contains
information for the safety, operation, and maintenance.
The graphics used in this manual may show machine details that may be different than the actual machine. Components
of the machine may have been removed for illustrative purposes or the continuing improvement of the machine’s design
may cause changes that are not included in this publication.
The owner of this machine is responsible for verifying the operator of this machine is properly trained and understands the
contents of this manual
About the PR750H Pelletizer
The PR750H Pelletizer from Cold et presents a state-of-the-art dry ice Pelletizer with features for easy operation, swift
production shifts, and high capacity performance.
The PR750H produces high-quality dry ice pellets. This is secured by the closed chamber technology which also ensures
fast production shifts and an extremely short start-up time.
The automatic change of extruder plates eliminates downtime and reduces the loss of valuable CO
2
. The pellet length and
quality are optimized by the PR750 design, and it can produce two sizes of pellets without changing the extruder plates.
The PR750H has many technical features compared to existing products on the market.
The hydraulic unit uses logic controlled high-performance components for optimal output.
The machine parts are protected by a moisture-free enclosure, which also reduces the noise level to a minimum
(below 75 dB(a). The PR750H provides a non-stop supply of high-density dry ice pellets. The source of raw material for
the production of pellets is liquid carbon dioxide preserved at low temperatures in a storage tank.
The control system of the PR750H Pelletizer, based on Beckhoff Industrial PC and HMI system, offers maximum functionality
and a user-friendly interface. By selecting the pellet size required, production is started by pressing one button. ust-In-
Time production minimizes labor and waste during production.