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TLR-50 PNEUMATIC REMOTE CONTROLS
Page 1
1.0 INTRODUCTION
1.1 Scope
1.1.1
This manual covers installation, operation,
maintenance, troubleshooting, and replacement parts for
Clemco TLR-50, 1/2" NPT Remote Control System.
1.1.2
All blast operator(s) and machine (pot) tenders
must be trained in the safe operation of the remote
control system and all other equipment used. They must
know about the hazards associated with abrasive
blasting. To ensure safe blasting, before using the
machine, read the manuals for the specific blast
machine and all accessories to be used.
Blast Machine, Manual No. ................................... 04124
RLX Control Handle, Manual No. .......................... 10574
1.2 Safety
Alerts
1.2.1
Clemco uses safety alert signal words, based on
ANSI Z535.4-1998, to alert the user of a potentially
hazardous situation that may be encountered while
operating this equipment. ANSI’s definitions of the signal
words are as follows:
This is the safety alert symbol. It is
used to alert the user of this
equipment of potential personal
injury hazards.
Obey all safety messages that follow this
symbol to avoid possible injury or death.
CAUTION
Caution used without the safety alert symbol
indicates a potentially hazardous situation
which, if not avoided, may result in property
damage.
CAUTION
Caution indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury.
WARNING
Warning indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
DANGER
Danger indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury.
1.3 General
Description
1.3.1
Clemco installs TLR-50 remote controls on 0.5
and 1.0 cu ft. blast machines.
1.3.2
OSHA requires remote controls on all blast
machines when an operator controls the nozzle.
The control handle, located near the blast nozzle, is the
activator for the remote control valves. When the
operator intentionally or unintentionally removes hand-
held pressure from the remote control handle, the
machine deactivates, stopping air and abrasive flow
through the nozzle. The remote control system “fails to
safe”, which means any interruption in the control-air
circuit for reasons such as a break in the line, the
compressor stops running, or the operator drops the
blast hose, the remote controls deactivate the blast
machine.
WARNING
Never modify or substitute remote control
parts. Parts from different manufacturers are
not compatible with Clemco equipment. If ANY
part of the remote control system is altered,
involuntary activation, which may cause
serious injury, can occur.
1.3.3
The components are shown in Figure 1. They
include the inlet valve, diaphragm outlet valve, RLX
control handle, 25-ft. and 3-ft. long twinline control
hoses, 2 control hose unions, and an 18-in. long
interconnecting hose.
1.3.4
TLR-50 Remote Controls are pressure-release
style systems which control the pressurization and
depressurization of the blast machine. Pressurization
occurs when the control handle is pressed and
depressurization occurs when the handle is released.
1.4 Operating
Principles
1.4.1
Clemco Recova Remote Controls operate
pneumatically on return air (See Figure 1). If the control
handle lever (the main activator of the system) is in the
up (no blast) position, one stream of air travels down the
outbound side of the twinline and escapes through an
opening located under the lever. The normally-closed
inlet valve remains closed, and the normally-open outlet