Refer also to the burner supplement supplied with the heater
ITEM
Gas Valve Block
Gas Valve Block
Gas Valve Block
Gas Valve Block
Gas Valve Block
Thermostat - Fan / Limit
Contactor
Contactor
Overload
Overload
Overload
Soft Start
Heat Exchanger Cleanout Door Gasket.
Burner Gasket
Burner Gasket
Burner Gasket
Burner Gasket
WARNING: Always switch off and disconnect
electricity supply, close the gas service valve or
turn off the oil supply before carrying out any
servicing work or replacement of failed compo-
nents.
4.1.1 General
Full maintenance should be undertaken not less than
once per year. After any servicing work has been com-
plete or any component replaced the air heater(s) must
be fully commissioned and tested for fuel tightness as
described in Section 2.5. Page 17
4.1.2 Burner Servicing/Maintenance
1. Refer to the burner instructions supplied with the
heater and complete the servicing/maintenance instruc-
tions therein. Note: In the case of gas burners ignore any
references in the burner supplement to the gas controls
assembly.
4.1.3 Heat Exchanger Cleaning
1. Removing the upper rear panel of the heater exposes
the heat exchanger rear clean out panel.
2. Removing the fan/limit thermostat(s) as described in
4.1.6.6.4, Page 25 disconnecting the flue and then
removing the upper front panel of the heater exposes the
heat exchanger front clean out panels. If the flue cannot
CPx Gas or Oil Cabinet Heater Range Issue 2.1 June 2014
3.2 Short List of Parts
Used on
30 & 45
60 & 90
120
150, 175 & 200
250 & 300
All
300
120-250
300
200
120/150/175/200
300LHP
All
30
45 - 90
120 - 175
200 - 300
be disconnected removal of the side panels exposes the
upper front header side clean out plates.
3. Remove the nuts securing the clean out panel(s) as
appropriate and remove panel(s).
4. If heat exchanger baffles are fitted, withdraw them.
5. Brush through heat exchanger tubes and remove loose
material using a vacuum cleaner.
6. If it is necessary to also gain access to the combustion
chamber disconnect the fuel and electrical connections
from the burner. Remove the nuts securing the burner to
the heater and withdraw the burner from the burner tube.
7. Reassemble all components in reverse order. Note:
Replace any gaskets with new ones.
4.1.4 Fan Assembly
1. Remove the lower panels of the heater to gain access
to the fan section.
2. Inspect the fan blades to see that they are not dam-
aged and that there is no excessive build up of deposits
that could give rise to an imbalance. If necessary clean
the fan blades using a stiff brush and vacuum cleaner.
3. Replace panels accordingly.
Part Number
141378701
141378702
141378703
141378705
141378706
143000306
143000600
143000601
143000800
143000801
143000802
143000620
170246006
141937080
141930806
142931252
142931240
4.1 Servicing
Page 23
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