Cold Jet RDS 500 Cub User manual

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1-800-3DRY-ICE CJI# 2W0238A
MODEL
Parts&
Maintenance
Manual

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Serial No.: ___________________
Voltage: 100-120 Volts AC
Model No.: RDS 500 Cub
Control No.: 2A0145
Diagram: 6G0116
Voltage: 200-230 Volts AC
Model No.: RDS 500 Cub
Control No.: 2A0145
Diagram: 6G0117
This manual illustrates the safety, operation, and maintenance features of the RDS 500 Cub.
The design contained in this manual was originated by, and is the exclusive property of Cold Jet, Inc. It is not to be used
in any way detrimental to the interests of Cold Jet, Inc.
No part of this design or manual may be reproduced, transmitted, stored in a retrieval system, or translated into any other
language or computer language, in whole or in part, in any form or by any means, whether it be electronic, mechanical,
magnetic, optical, manual or otherwise, without the express written consent of Cold Jet, Inc.
Copyright 2000 by
Cold Jet, Inc.
All Rights Reserved
Printed in U.S.A

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SpecialNotes
All information contained within this manual, or information derived from exposure to the technology
or equipment supplied by Cold Jet, Inc. remains "CONFIDENTIAL" between Cold Jet, Inc. and the
purchaser or authorized user. Any unauthorized transfer of information to any person or company not
in the direct employ of Cold Jet Incorporated, or not in the direct employ of, or for, the purchaser, or
the authorized user, is strictly prohibited by agreement.
WarrantyCompliance
All procedures, specifications, maintenance and configurations of any and all Cold Jet systems and
their supporting equipment, as well as the installation thereof, must have the express written
knowledge and approval of Cold Jet, Inc. or warranties can become invalidated. Furthermore the use
of Cold Jet systems in any unsafe, unspecified, or in any unauthorized manner can immediately
invalidate any and all warranties.
ForYourInformation
If you have questions about our product lines, applications for our equipment, the environmental
impact of our equipment or would like more technical information please visit our web site at
www.coldjet.com.

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Special Notes....................................................................................................................................3
Warranty Compliance........................................................................................................................3
For Your Information..........................................................................................................................3
1. Troubleshooting____________________________________________________________ 7
2. Maintenance _______________________________________________________________ 9
Preventive Maintenance .........................................................................................................9
On a Daily Basis ..........................................................................................................9
On a Weekly Basis.......................................................................................................10
On a Monthly Basis......................................................................................................11
Every Three Months.....................................................................................................12
500 Hour Scheduled Maintenance..........................................................................................13
Tuning Fork Replacement ......................................................................................................14
Appendix A: Performance ______________________________________________________ 17
Appendix B: Specifications _____________________________________________________ 19
Appendix C: Electrical Schematics _______________________________________________ 21
120 Volt ..................................................................................................................................21
230 Volt ..................................................................................................................................22
Appendix D: Assemblies _______________________________________________________ 23
TableofContents

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Section5
Section5Section5
Section5 Troubleshooting
TroubleshootingTroubleshooting
Troubleshooting
Problem CheckThis
Machine will not start.
1. Is the unit plugged in?
2. Is the power Switch in the ON position?
3. Reset E-stop.
4. Is the FEEDER RESET ready? If not, press to
reset.
5. Is the 24V Power fuse blown (the indicator will be
red)?
Machine will NOT blast.
1. Is the air supply CONNECTED and the air supply
on?
2. Is the air supply gauge showing pressure?
3. Is the OPTIONAL pressure regulator open?
4. Is applicator cable CONNECTED to Cub and the
applicator?
5. Is the BLAST pressure gauge showing pressure
when the trigger is pulled?
6. The NOZZLE may be clogged, blast with air only
to unclog the nozzle.
Machine blasts AIR but NOT
pellets.
1. Set feeder speed.
2. Check Vibrator.
3. Unclog NOZZLE.
If these recommendations DO NOT solve your problem, contact our Technical Service hotline:
1-800-777-9101.

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1. Drain water out of the coalescing filter before using
the machine. (turn pet-cock fully open to drain the
water)
2. While in operation check all gauges.
3. Make sure the feeder reset light is on.
4. Make sure the caster wheels will lock.
5. Check the air and blast hoses for damage, like cuts
or scuff marks.
6. Make sure the applicator’s blast cable is NOT
wound around the blast hose .
Figure 2
Figure 1
Figure 3
Figure 4 Figure 5
Section6
Section6Section6
Section6 Maintenance
MaintenanceMaintenance
Maintenance
PreventiveMaintenance
OnaDailyBasis
Figure 6

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1. Look through the hopper to check the rotor
for nicks or gouges.
(Use a flashlight).
2. Make sure the Cub’s screws are tight.
OnaWeeklyBasis

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OnaMonthlyBasis
1. Make sure the nozzle airflow exit end is not
deformed or burred.
2. Tighten all screws on Applicator Rotary
Union.

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EveryThreeMonths
EveryThreeMonthsEveryThreeMonths
EveryThreeMonths
1. Make sure the vibrator motor bolts are at a
torque setting of 40 ft-lbs.

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1. Check pads and rotor
2. Check upper and lower tension springs
3. Check voltage and amperage on DC drive
4. Check specs on AC controller
5. Check brushes in the vibrator motor
6. Check condition of power cord
7. Check all light bulbs
8. Check all gauges
9. Check static ground reel
10.Inspect hoses for damage
11.Replace consumable parts
Check the tuning fork
Check the filter element
12.Check the accessories
13.Safety test the unit
14.Check all valves
500HourScheduledMaintenance
IfyouarenotanauthorizedColdJetservicetechnician,
pleasecalltoschedulethisservice.

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Removetheoldtuningfork
Remove compressed air supply and electric
power from the machine.
Remove the safety screen from the top of the
hopper (do not let anything fall into the
feeder).
Open the side door of the machine and remove the old tuning fork by unscrewing the two 8 mm
ny-lock nuts that hold it in.
Installthenewtuningfork
Use a small quantity of anti-seize compound or graphite lubricant on the studs to prevent galling
during assembly.
Torque the nuts to approximately 11.5 ft-lb. Be sure to install washers in the order they were re-
moved.
Attach the power cable and press the power
button (DO NOT ATTACH THE COMPRESSED
AIR HOSE)!
Toolsrequired:
LargePhillipsscrewdriver
3/32”Hexkey
13mmsocketwrench
Anti-seizecompoundorgraphitelubricant
REMOVE HOPPER SCREEN
REPLACE AFTER NEW AGITATOR
IS INSTALLED
INSTALL NEW VIBRATING
PELLET AGITATOR 3J0504 USE THREAD LUBRICANT
TIGHTEN TO 15 FT/LBS
TuningForkReplacement
Thetuningforkiseasytoreplace,andshouldtakeonly15-20minutestocomplete

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Finetuningthetuningfork
Open the Controls enclosure on the front of the
Cub
Loosen the potentiometer shaft from the silicone
seal.
Pull the blast gun trigger; this will cause the vi-
brator motor to jump to HIGH for around 1 to 2
seconds, followed by a drop to LOW.
Once the machine is vibrating on LOW, adjust
the potentiometer shaft clockwise or counter
clockwise until the tips of the tuning fork vibrate
between ¼” and ½”.
It may be necessary to bend one of the tuning
fork tines to avoid chatter on the hopper shield.
This will be obvious because of excessive noise.
Once the vibrator motor is tuned, shut off the
blast trigger, and re-seal the potentiometer shaft
with silicone.
Disconnect the power to the machine and rein-
stall the safety screen.

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AppendixA
AppendixAAppendixA
AppendixA Performance
PerformancePerformance
Performance
PELLET FEED RATES
STANDARD AND OPTIONAL ROTORS
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
0 102030405060708090100
Feed Rate Setting(%)
Pellet Feed (pounds-per-minute)
Standard-Feed

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AppendixB
AppendixBAppendixB
AppendixB Specifications
SpecificationsSpecifications
Specifications
Weight Empty: 275 lbs. (114 kg.)
Hopper Pellet Capacity: 65 lbs. (30 kg.)
Standard Pellet Mass Delivery Rate: 0 to 375 lbs. per hour
(0 to 2.8 kg. per minute)
Power Requirements: 100-120 Volts AC, Single Phase,
(50/60 Hz) 6 Amps
200-240 Volts AC, Single Phase,
(50/60 Hz) 4 Amps
Motor, Feeder Drive: 1 Hp. AC Motor, 1725 RPM
Standard Air Pressure, Pellet Blast-
ing: 50 to 140 PSIG

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