Roberts Gorden Combat MGB0100, Руководство по установке

Страница: 69 / 92

SECTION 15: R
EMOVAL AND
R
EPLACEMENT
P
ARTS
63 of 85
SECTION 15: REMOVAL AND REPLACEMENT PARTS
See w arnings and important information before
remo v ing or replacing parts.
After any maintenance or repair w ork, al w ays test
fire the heater in accordance w ith the commissioning
instr u ctions on Page 40, Section 10 to help ens u re
all safety systems are in w orking order before
lea v ing the heater to operate. Minor fa u lts may be
traced by u sing the tro u bleshooting charts on Page
58, Section 14.2 thro u gh on Page 62, Section 14.7 .
15.1 Burner Components
To remo v e the b u rner from the heater:
1. Unpl u g the b u rner electrical s u pply from the
heater.
2. Isolate the f u el s u pply at the inlet man u al v al v e
and disconnect the inlet f u el pipe.
3. Unscre w the n u ts holding the b u rner mo u nting
flange to the heater.
4. Remo v e the b u rner from the heater, retaining
the gasket for re u se.
For remo v al of b u rner components, follo w the b u rner
man u fact u rer’s instr u ctions. To refit the b u rner,
re v erse the instr u ctions abo v e. Fit the gasket
bet w een the b u rner mo u nting flange and the heater.
Use a ne w gasket, if necessary.
15.2 Direct On-Line Main Fan Starter and
Thermal Overload Unit (3 Ø)
This assembly comprises t w o parts, the contactor
and the o v erloads, w hich may be changed
separately.
15.2.1 The Contactor
To remo v e the contactor:
1. Remo v e the o v erloads as on Page 63, Section
15.2.2 .
2. Remo v e the line connections to the top of the
contactor (noting the colo u r code) and the t w o
coil connections at the top rear of the contactor.
3. Unscre w the fixing scre w s to remo v e the con-
tactor from the panel.
4. Re v erse these instr u ctions to refit. Check rota-
tion of the fan after w orking on the contactor.
15.2.2 The Overloads (models 060 to 100)
To remo v e the o v erloads:
1. Unscre w the motor connecting w ires from their
terminals at the bottom of the assembly. Note
the colo
u r code.
2. Disconnect the o v erload circ u it connections
near the o v erload reset b u tton.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
Carbon Monoxide Hazard
WARNING
Use only genuine ROBERTS GORDON ® replacement parts per this installation, operation and
service manual.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Explosion Hazard
DANGER
Electrical Shock Hazard
Fire Hazard
WARNING
Severe Injury Hazard
Use proper lifting practices and equipment.
Equipment and accessories are heavy.
Failure to follow these instructions can result
in death, injury or property damage.