Meco Pellematic PES 12-20, Руководство по установке

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Malfunctions
77
Display: Flame contr malf
Description: Flame supervision fault, minimum flue gas temperature not reached during heating
up at full power
Cause and Remedy: no pellets available
► fill up with pellets
flue gas sensor
contaminated ► clean flue gas sensor and flue gas tube
power is too low
► increase boiler power rating
Table 13.8 Fire protection
Display: Fire prot sys op
Description: Fire protection system open malfunction.
Cause and Remedy: Fire protection motor gate
unplugged
► Connect up fire protection system and check cable
connections
Fire protection motor does
not reach OPEN limit switch ► check ball valve to see if it is jammed
no signal although open ► check cables and fire protection system
Display: Fire prot sys cl
Description: Fire protection system closed malfunction.
Cause and Remedy: fire protection system
unplugged ► connect up fire protection system and check cable
connections
fire protection system does
not reach CLOSE limit
switch ► check whether ball valve is jammed, check ball valve
throughway to see if foreign objects are preventing
it from closing
no signal although closed ► check cables and fire protection system
Display: Fire prot sys
Description: Both fire protection motor limit switches are closed at the same time
Cause and Remedy: both limit switches activated ► check fire protection system, check cables, check
connectors
Table 13.9 Negative draft supervision
Display: Negative draft
Description: Negative draft in boiler is not achieved
Cause and Remedy: negative draft tube
disconnected
► connect up negative draft tube
negative draft does not
change
► check negative draft tube for leaks. Check flue gas
tube for blockage.
negative draft pressure too
low
► close boiler door, check tube to negative draft sensor,
check whether boiler flue gas outlet is clear, check
whether condensation heat exchanger is clear. Make
sure flue gas fan is running.
Table 13.10 Suction system
Display: Suction system
Description: Hopper cannot be filled up even after 3 suction cycles
Cause and Remedy: storage room empty
► fill up with pellets
extraction system is blocked ► clear extraction system
extraction system not
conveying pellets ► pellet bridge - destroy bridge and make sure material
flows properly
PE 3671 USA 2.3 Installation Manual PES 36–56