Shanghai Bao Yi Electrical and Mechanical Equipment Co., Ltd. professional agent of marine, land and boiler burners and accessories: 
 Sales Hotline: 13801874668 text, Tel :021 -61,241,138 Fax :021 -61,241,137, E-mail: 895941109@qq.com, QQ: 895 941 109, Website: www.ranshaoqi.com.cn 
 Minhang District, Shanghai Xinsong Road 958, Lane Victoria Park Road, Room 1402, on the 18th 
 This LDU11 ... controlling detect leakage of gas train close the valve and two safety shut off valve. Each burner cycle sequence the LDU automatic control unit, if the leak is detected, start a lock, to prevent the burner from the start. 
 Implementation of the gas leak test, close the valve to start and / or immediately after the turn off the burner 
 Without the limitations of the inlet gas pressure 
 Pointed out that the progress of a user-friendly dial test program 
 To eliminate or exhaust valve leakage test this 
 Effective cost control in order to improve the security of the system 
 Adopted worldwide? CULus, FM, CE 
 This LDU11 (or control unit) applied to the gas combustion system with or without an exhaust valve in the gas train. 
 Installed in between the installation of one or two pressure switches, gas valves, the LDU automatically increased by the gas valve prove or 
 Before the burning starts 
 Control immediately after the shutdown, or 
 Both immediately before and after start-up and shut down the burner 
 Valve leakage test is completed in two phases: 
 The Test1 testing phase, the first personnel to quickly guide the valve between the pressure test gas shut off valve upstream. The pipeline between the gas valve leak detection pressure switch does not increase the pressure. 
 The Test2 a second nuclear test stage, the pressure region between the gas valve safety testing downstream shutoff valves. Pipeline gas valve leak detection pressure switch between the incidence of no significant reduction in pressure. 
 If the leak detection switch signal of excessive gas pressure increase Test1 in the first test phase, or reduce the Test2 in the second test phase, the control will be locked to prevent the LDU burner car. The indicator scale leak test the progress of the previous unit. When a system failure occurs, the indicator dial of time parked in lay-off, and instructed the valve leakage. If the lockout reset button control to the front of the light orange to indicate a fault. 
 Model main voltage (Hz) 
 LDU11.523A27 AC220-240V 50 ... 60 
 LDU11.523A17 AC100-110V 50 ... 60 
 Technical parameters 
 -15% ... Of the main parameters of the main voltage AC220V to AC240V +10% 
 Of AC100V -15% ... Wiring AC110V +10% 
 Dominant frequency of 50Hz ± 6% 
 External fuse 10A 
 Power 
 - Test 3.5VA 
 - Run 2.5VA 
 Weight 4 lbs 
 Degree of protection NEMA 1,2,5,12,13 
 Environmental conditions of transport environments to IEC 60 721-3-2 
 Internal conditions of class 2K2 
 Temperature range -58 ... to +140 oF 
 Mechanical condition class 2M2 
 Humidity <95% 
 Running environment, the IEC 60 721-3-3 
 Internal conditions of class 3K5 
 Mechanical condition class 3M2 
 Temperature range of -5 ... to +140 oF 
 Humidity <95% 
 Shall not be water