Almex T4PGF1, Инструкция по эксплуатации

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T4PGF1 INSTRUCTION MANUAL Page 8
SHAW-ALMEX INDUSTRIES LIMITED June 14 2017
5. Turn the RESET Key Switch and the temperature controllers will indicate the actual platen temperature and
the set point temperature. The platens cannot be switched on until the MAIN BREAKER is switched fully
OFF and then ON. The system is set to trip at or below
30 ma of current leakage in under 50 ms.
6. OPERATION
6.1. How to Operate and Understand the Safety Features
When power is connected to the panel L1, L2, L3 pilot lights will illuminate. The box will need to be reset
using the keyed reset switch. Once reset
a qualified person should take possession of the key so the control box
cannot be randomly reset in the case of an earthing failure. If a failure occurs only qualified personnel can
examine repair or diagnose and reset the control box. The MAIN BREAKER can then be reset. The earth
condition indicators will illuminate and show one of three colours.
Switch the MAIN BREAKER fully OFF (0 or green) with some force and then back ON (1 or red) to reset.
There are 2 indicator lights, one for the platens and one for the pump. If either indicator shows Red there is a
ground wire short. This means a wire has crossed and is giving a false earth signal. The earth connection is not
confirmed as proper. If either indicator shows Yellow, a cable or ground wire may be disconnected or
registering too high a resistance to be sensed properly. This could occur if the pump or platen cable is not
plugged in or if an earth wire is not attached or corroded. If the cables are plugged in and this Yellow indicator
is showing shut down the press and inspect immediately. If a Yellow or Red indication is on the affected plugs
will have power removed immediately by the safety circuits of the T4P-GF box. Power will not be supplied to
the plugs until a Green indicator light is associated with the plug, or plugs. If either indicator shows Green the
system is ready to go. If a pump is not used the pump indicator will show Yellow or no earth/ground attached.
On the face is a Red push button. This is used to test the earth fault system by producing a 30ma signal to
ground. This should trip the earth fault system and turn the main breaker off. Once tripped the push button
will light up Red to indicate an earth fault problem and the power will be removed in under
55ms
. If the earth
fault system does not trip, LOCK this box out and have it repaired immediately. This should be checked every
time the T4P-GF system is used. If the system has been tripped on its own and the main breaker is turned off
and/or the push button is illuminated Red, an earth fault condition has occurred. Stop use immediately and have
a qualified person check the problem.
The T4PGF1 temperature control panel has two solid state temperature controllers, one for the top platen and
one for the bottom platen. If one platen cable becomes disconnected, both platens and temperature indicators
will switch OFF. The MAIN BREAKER will remain ON.
The
T4PGF1
also has a single auxiliary receptacle for operating an HPP20-4 GF pressure pump. The
connections and coding block will be designed to accept only the voltage the GF box has been built to. The
receptacle is designed to have no power supplied to it unless a properly grounded HPP20-4 GF pump has been
installed and the ground continuity check shows the pump system is functioning properly by indicating a Green
light.
Each temperature controller displays the process value (PV) which is the actual platen temperature, and the set
value (SV) which is the desired temperature. As the platens are heating and coming up to temperature the
controllers will indicate this by running with a Green colour display. As the platen temperatures come close to
the set point they will change to an Amber colour to signify that attention should be paid to the temperatures. If
the platen temperature set point is exceeded the controllers will show a Red display colour and sound a 90 dB
alarm to signify a problem. Correct the problem immediately before damage occurs to the belt splice, or
equipment.
IMPORTANT: The platens must be ground fault ready as identified by an AS/GF in the model type (e.g. SVP-
AS/GF or RAB4-AS/GF) or the T4PGF1 control panel will not function. Most Almex vulcanizer platens can be
easily converted to work with the T4PGF1 control panels. Contact Shaw-Almex Service for information.
The control system is factory set to trip in the case of an earth fault failure below 30ma at or less than 55ms. If
resistance to the earth increases to an unsafe level, the system is designed not to allow power to the platens and
or pump. Each circuit is fused or thermally protected to the appropriate load capability of the parts. “Do not
replace with larger fuses”. The main breaker is rated at 30 amps. The pump is protected at 10 amps. Platen
plugs are protected at 15 amps each.