Johnson & Starley 42-451-14, Инструкции по установке, пусконаладке и обслуживанию

Страница: 20 / 36

www.johnsonandstarley.co.uk
20
13 16
8.9
ELECTRICAL ASSEMBLY REMOVAL:
8.9.1 Ensure that the electrical supply is isolated.
8.9.2 Remove the appliance lower and upper doors.
8.9.3 Release 2 x 4mm screws securing the Limit switch cover and the withdraw cover.
8.9.4 Release 2 x Electrical Assembly cable clamps.
MODAIRFLOW models:
8.9.5 Disconnect the following
a. Disconnect 230V connections (L/N/E) from Fan Assembly,
b. 230V mains ‘ L ’, ‘ N ’ and ‘ E ’ from connection block terminals ‘ 1 ’, ‘ 3 ’ and ‘ 2 ’ respectively,
c. Thermista-stat connections from connection block terminals ‘ 4 ’ (+ve) and ‘ 5 ’ (-ve),
d. Limit switch ‘ LOAD ’ and ‘ COMMON ’ connections,
e. 2 x Airflow sensor connections,
NON-MODAIRFLOW models:
8.9.6 Disconnect the following:
a. Disconnect 230V connections (L/N/E) from Fan Assembly,
b. 230V mains ‘ L ’, ‘ N ’ and ‘ E ’ from connection block terminals ‘ 1 ’ and ‘ 3 ’, and earth stud respectively,
c. Room thermostat from connection block terminals ‘ 5 ’ and ‘ 6 ’,
d. Limit switch ‘LOAD’ and ‘ COMMON ’ connections,
e. Fan Delay Control ‘ LOAD ’, ‘ COMMON ’ and ‘ EARTH ’ connections,
Both model types:
8.9.7 Disconnect 2 x TTB connections from the terminal block on the fan compartment diaphragm..
8.9.8 Disconnect the Multifunctional control connections.
8.9.9 Disconnect the Circulator electrical connections (if fitted).
8.9.10 Release 4 x 4mm screws securing the Electrical assembly to the heater cabinet and remove the Electrical
assembly, releasing wiring from cable clamps and grommets as required..
8.9.11 Refitting or replacement is in reverse order.
8.10
ELECTRONIC MODULE REMOVAL (MODAIRFLOW models only)
8.10.1 Remove the Electrical assembly as detailed in sect 8.9.
8.10.2 Disconnect the Electronic module from the Electrical assembly.
8.10.3 Release 3 x screws securing the Electronic module to the Electrical assembly and remove the module.
8.10.4 Refitting or replacement is in reverse order.
8.11 TRANSFORMER REMOVAL (MODAIRFLOW models only):
8.11.1 Remove the Electrical assembly as detailed in sect 8.9.
8.11.2 Disconnect the Transformer from the Electrical assembly terminal block, and fuse from the Earth stud.
8.11.3 Release 2 x screws and nuts securing the Transformer to the Electrical assembly, and remove the Transformer.
8.11.4 Refitting or replacement is in reverse order.
8.12 TIME CONTROL REMOVAL:
8.12.1 Ensure that the electrical supply is isolated.
8.12.2 Release the securing screw situated on the lower face of the Time Control and remove by partially withdrawing
the bottom of the Time Control and then lifting upwards.
8.12.3 Disconnect the Time Control electrical connections from the integral terminal strip.
8.12.4 Refitting or replacement is in reverse order.
8.12.5 Set the Time Control to the required ON and OFF times.
8.12.6 Set the Time Control to correct time.
8.13 FAN DELAY CONTROL, LIMIT SWITCH AND AIRFLOW SENSOR REMOVAL:
NOTE: Airflow Sensor applies to MODAIRFLOW models only, whilst Fan Delay Control applies solely to non-
MODAIRFLOW models.
8.13.1 Ensure that the electrical supply is isolated.
8.13.2 Remove the appliance lower and upper doors.
8.13.3 Release 2 x 4mm screws securing the Limit switch cover and withdraw the cover.
8.13.4 Disconnect the required control/switch.
8.13.5 Release 2 x securing screws and remove required control/switch.
8.13.6 Refitting or replacement is in reverse order.
MODAIRFLOW DEFECT DIAGNOSIS FLOW CHART
MAIN BURNER NOT CYCLING
(
ROOM TEMPERATURE TOO HIGH)
N
CHECK FOR VOLTAGE AT
FAN LIVE TO EARTH
REPLACE
ELECTRONICS
MODULE
Y
N
IS
FUSE
OK ?
REPLACE FUSE
N
Y
CHECK FOR VOLT-
AGE
AT FAN LIVE TO
NEUTRAL
MAIN BURNER ON, BUT FAN NOT RUNNING
Y
REPLACE FAN
DOES
FAN
START?
N
BRIDGE OUT
AIRFLOW SENSOR
Y
REPLACE
AIRFLOW SENSOR
REPLACE
TRANSFORMER
REPLACE
MULTIFUNCTIONAL
CONTROL
N
Y
REPLACE
ELECTRONICS
MODULE
DISCONNECT
YELLOW WIRE AT
MULTIFUNCTIONAL
CONTROL
N
DOES
BURNER
GO
OUT?
DISCONNECT
THERMISTA-STAT
REPLACE
THERMISTA-STAT
Y
DOES
BURNER
GO OUT?
10. FAULT FINDING
MODAIRFLOW FAULT FINDING