Roberts Gorden Compact Tubular Unit Heaters CTCU 27 - Manual (Page 33)

SECTION 13: S ERVICING
27 of 42
SECTION 13: SERVICING
13.1 Servicing Instructions
After commissioning, the heater will require
maintenance to be carried out annually. If the heater
is used in a dirty or dusty area, more frequent
maintenance may be necessary.
Installation, service and annual inspection of
heater must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment.
NOTE 1: After any maintenance or repair work
always test fire the heater in accordance with the
commissioning instructions
on Page 21, Section 11
through Page 24, Section 11.9 to ensure all safety
systems are in working order before leaving the
heater to operate. Minor faults may be traced by
using the troubleshooting charts on Page 31,
Section 15 through Page 35, Section 15.5.
NOTE 2: Check all gas pipes and pipe joints to
ensure there are no cracks or gas leaks. Any cracks
in the pipes or pipe joints must be repaired.
NOTE 3: Inspect all suspended components and
hardware. Insure that they are in good condition,
properly tightened, and corrosion free.
13.2 Burner Maintenance
1. Open the hinged door and remove the burner
compartment cover. See Page 37, Section 16.2.
2. Clean any deposits from the main burner which
may have formed in the injectors or venturi of
the burner.
See Page 37, Section 16.2.
3. Remove the ignition electrode and flame probe.
Check condition of ignition electrode and flame
probe. Clean off any deposits which may have
been formed, check condition of ceramic
insulators. Replace as necessary.
13.3 Fan/Motor Assembly Maintenance
The main fan bearings are permanently sealed and
do not need lubrication. Before cleaning, turn off gas
and electrical supply. Remove the fan(s) and use a
small brush or duster to clean the fan blades from
each side. Replace fan(s) when done.
13.4 Heat Exchanger Maintenance
The heat exchanger will remain clean unless a
problem has developed with combustion. Inspect the
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
More than one
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
WARNING
Severe Injury Hazard
Turn off gas and electrical supply before
service.
Fan can start automatically at any time.
Failure to follow these instructions can
result in severe injury or product damage.