7 INITIAL ACTIVATION AND MAINTENANCE
Installation, user and maintenance manual – LCGHP/LSGHP
57
After 30 minutes, the appliance will automatically remove the thermal power override previously selected. To speed up,
select and execute action "25" of menu 2.
11. Switch the appliance off.
12. Close the gas valve.
13. Reinstall the cap A in Figure 7.1 p. 56.
14. Reinstall the front panel.
7�2 MAINTENANCE
Correct maintenance prevents problems, guarantees maximum operating efficiency of the appliance and allows running costs to be
contained.
The maintenance operations described in this paragraph must be performed exclusively by the serviceman in charge of the
plant or by an authorized CAT Lochinvar.
Any operation that regards internal components of units of the appliance must be carried out by an authorized Lochinvar
Technical Assistance Centre (TAC), according to the instructions supplied by the manufacturer.
The "efficiency check" and every other "check and maintenance operation" (see Table 7.1 p. 57 and 7.2 p. 57), must be
performed with a frequency in agreement to current law or, if more restrictive, in respect of what requested by the plan-
ner (builder of the system) or by the manufacturer of the unit.
The liability of CHECKING THE EFFICIENCY AS A FUNCTION OF THE SYSTEM, OF THE FUEL IN USE AND OF THE THERMAL
POWER, to be carried out with the purpose of containing the energy consumption, is in charge to the responsable of the
system.
Before any maintenance operation, switch off the appliance by means of the permissive contacts (or by means of DDC/CCP)
and wait for the completion of the shut-down cycle. When the appliance is off, switch off power supply and gas supply (ac-
cording to anti-icing settings), opening the electrical breaker and closing the gas isolation valve.
GUIDELINES FOR THE PREVENTIVE MAINTENACE OPERATIONS
In Table 7.1 p. 57 are reported the guidelines for the preventive maintenance operations.
If the unit is subject to particularly heavy duty (for example in process plants or in other conditions of continuous opera-
tion), these maintenance operations must be more frequent.
Table 7�1
GUIDELINES FOR THE PREVENTIVE MAINTENACE OPERATIONS
Check of the unit
LCGHP/LSGHP
Visually check of the general condition of the unit and of its air heat exchanger.
(1)
√
Check the correct operation of the device used for monitoring the water flow
√
Check the % value of CO
2
√
Check that the condensate discharge is clean
[If necessary, frequency of the maintenace operation must be increased]
√
Replace the belts after 6 years or 12,000 hours of operation
√
Check for every DDC or CCI
DDC or CCI
Check that the plant is able to achive the setpoint temperature
√
Download the hystorical events
√
1 - It is suggested the cleaning of the air heat exchanger once every 4 years [the optimal frequency of this operation is in any case a consequence of
the installation site].
ORDINARY SCHEDULED MAINTENANCE
Perform the following operations at least once every 2 years.
If the unit is subject to particularly heavy duty (for example in process plants or in other conditions of continuous opera-
tion), these maintenance operations must be more frequent.
Table 7�2
SCHEDULED MAINTENANCE OPERATIONS
TO BE PERFORMED AT LEAST ONE EVERY TWO YEARS
Check of the unit
LCGHP/LSGHP
Clean the combustion chamber
√*
Clean the burner
√*
Clean the electrodes of ignition and flame sensing
√
Summary of Contents for LCGHP
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