Ambirad ARE50 U 설치 및 서비스 매뉴얼 - 페이지 18

{카테고리_이름} Ambirad ARE50 U에 대한 설치 및 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Ambirad ARE50 U 20 페이지. Gas fired radiant tube heaters

페이지 인쇄

To replace the injector

Remove burner head as on previous page.

Unscrew injector from its carrier using a

spanner on the hexagonal portion of its body.

When replacing ensure the injector is fully

tightened in its carrier. For correct injector size

see data badge on heater.

To replace gas safety control valve

(double solenoid and governor models S.I.T.,

Honeywell and Black/Teknigas).

Remove combustion chamber cover as on

previous page. Remove control housing cover

by removing the two dome headed fixing

screws. Remove burner head and the 2 screws

holding inlet gas connection supply support

plate. Disconnect the gas valve electrical

connection, marking each connection.

The gas valve and injector can now be

removed as an assembly. Using an approved

pipe joining compound on pipe threads,

Figure 15 Model AR burner assembly

Air intake guard

Combustion chamber

Burner head

Burner assembly

support casing

Electrode/igniter

assembly

Figure 16 S.I.T. vacuum proving switch

refit the pipe fittings onto the replacement

control valve. Replace the control valve into

the control housing (refit burner onto injector

holder before tightening inlet support plate

screws). Carry out commissioning, setting

the burner pressure to that indicated on

the data badge.

Note Insulated inline connectors are used

on Black/Teknigas control valve.

To replace the electronic

sequence controller

Swing open the safety control housing cover

by unscrewing two screws. Disconnect the

electrical connector on the side of the

electronic sequence controller. Unplug the

single grey high tension lead from the

electronic sequence controller. Remove the

two bolts securing the sequence controller to

the control housing door and replace the

sequence controller using the high tension

Gas safety control valve

Gas supply

pipe

Pressure sensing tube

Impulse line

Injector

lead (grey) from the old controller unless its

insulation is damaged. When refitting the

pactrol sequence controller, take care that the

rear flanges of the sequence controller are

correctly located underneath the retaining lip

in the door of the control housing (pactrol

P16DIA only). Refit the two bolts and electrical

connector into the sequence controller and

high tension leads into its connector.

To replace the vacuum proving switch

Disconnect the two silicon rubber tube

connections at the vacuum switch.

Disconnect the three push on connectors

from the vacuum switch. Remove the two

screws securing the vacuum switch and

slip the vacuum switch out of the control

housing. Refitting is a reversal of the above,

taking care to correctly reconnect the

three cables.

Safety control

3 pins main

housing

inlet socket

3 pin fan

Vacuum

socket

proving switch

Electronic sequence

controller

Hinged lid

Gas pressure

test pipe