Roberts Gorden CTCU 22 Manual Do Utilizador

20 

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.

All 

installations and service of ROBERTS GORDON

®

 

products must be performed by a contractor qualified in 
the installation and service of gas-fired heating 
equipment and conform to all requirements set forth in 
the ROBERTS GORDON

®

 manuals and all applicable 

governmental authorities pertaining to the installation, 
service and operation of the equipment.
To help facilitate optimum performance and safety, 
Roberts-Gordon recommends that a qualified contractor 
annually inspect your ROBERTS GORDON

®

 products 

and perform service where necessary, using only 
ROBERTS GORDON

®

 replacement parts.

 After any maintenance or repair work, 

always test fire the heater in accordance with the 
commissioning instructions on Page 15, Section 10 
through Page 17, Section 10.3.1 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 22, 
Section 14 through Page 25, Section 14.5.

 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.

 Inspect all suspended components and 

hardware. Insure that they are in good condition, 
properly tightened, and corrosion free.

1. Open the door and remove the burner compart-

ment cover. See Page 27, Section 15.2.

2. Clean any deposits from the main burner which 

may have formed in the injectors or venturi of 
the burner. See Page 27, Section 15.2.

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.

The main fan bearings are permanently sealed and 
do not need lubrication. Before cleaning, turn off gas 
and electrical supply. Remove the fan and use a 
small brush or duster to clean the fan blades from 
each side. Replace fan when done.

The heat exchanger will remain clean unless a 
problem has developed with combustion. Inspect the 
heat exchanger. Look for signs of overheating at the 
front tubes which may indicate burner over firing or 
persistently low air flows.

No regular maintenance is required on this device. 
To change gas control valves, See Page 26, Step 
15.1 and Page 30, Section 15.5.
Do not repair or disassemble on site.

®

The flue fan should not require maintenance. 
However, if the air pressure switch is causing burner 
lockout, then remove the flue fan from the vent box 
by unscrewing the three screws at the mounting 
plate. Remove the four screws attaching the 
mounting plate to the fan inlet (See Page 29, 
Section 15.4). Ensure that the fan is free to run and 
that the fan wheel is clean.