DP30 / DP32 / DP33 / DP34

Pneumatic actuators

Description

Scope of applications
The condensate recovery and return station is used in steam systems and serves to return the accruing condensate for reuse.
The ARI condensate station is a compact installation premounted on a base frame and consists of high-quality individual components. The individual components of the centrifugal pump (shaft, impellers, distributors) are made of high-quality CrNi steel.

Recirculation protection is ensured through the installation of non-return valves. Maintenance in the operating status is enabled by stop valves installed upstream and downstream from the pumps.
Venting the receiver to the atmosphere ensures that the condensate feed is not hindered by back-pressure in the collecting tank. The temperature display is attached directly to the receiver (max. system temperature 95°C). The pumps are fitted on the pressure side with a control pressure gauge.

Operating principles

As it accrues the condensate is collected in the receiver of the condensate recovery and return station until a preset maximum level in the receiver is reached.
If the preset maximum level is exceeded one of the installed recirculating pumps comes into operation.
The condensate is pumped off until the minimum level required by the system is reached.

Pump controller (optional)
The pump controller works discontinuously.
This minimizes operating hours and energy consumption.
The switching instants (pump(s) on / pump(s) off / low water and high water alarm) are
preset.

The following signals and switches are integrated in the controller:
– Pump On / Off
– High water alarm (overflow)
– Low water alarm (water shortage)

The controller contains:
– Optical operating and fault displays for the pump(s)
– Operating device for manual / off / automatic mode on the control cabinet
– Regular, automatic lead pump changeover (if 2 pumps are used)

See the annex for the pump controller’s technical data “wiring diagram”

Level measuring as well (optional)
The level in the receiver is visualised by means of a sensor in the display.

Safety devices
The condensate station is designed for use with atmospheric pressure.
A vent to the atmosphere protects against operations with non-permissible pressure (vapour pipe).

Technical data

Actuator type	Diaphragm area	Part-No. ……00001 / 2		Spring range	Nominal travel	Number of springs	Filling-volume
	(cm²)	Standard	with manual emergency adjustment	(bar)	(mm)	(Pieces)	(Litre)
DP30	80	92046	92246	0,6-1,5	20	1	0,37
		92048	92248	2,2-4,5			0,34

DP32	250	92050	92250	0,2-1,0	20	4	1
				0,4-1,2			1,1
		92052	92252	0,8-2,4	20	8
		92057	92257	0,2-1,0	30	4	1,2
				0,4-1,2			1,4
		92059	92259	0,8-2,4	30	8
		92054	92254	1,5-2,5	20	6	1
		92060	92260	2,0-3,3	20	8

DP33	400	92070	92270	0,2-1,0	20	4	1,7
				0,4-1,2			1,9
		92072	92272	0,8-2,4	20	8
		92076	92276	0,2-1,0	30	4	2,1
				0,4-1,2			2,4
		92078	92278	0,8-2,4	30	8
		92080	92280	1,7-2,7	20	6	2
				1,5-3,0	30		2,2
		92074	92274	2,3-3,7	20	8	2
				2,0-4,0	30		2,2

DP34	800	92130	92330	0,2-1,0	30	4	3,8
				0,4-1,2			4,4
		92132	92332	0,8-2,4	30	8
		92136	92336	0,2-1,0	50	4	5,5
				0,4-1,2			6,6
		92138	92338	0,8-2,4	50	8
		92140	92340	2,1-3,0	30	6	6,9
				1,5-3,0	50
		92134	92334	2,4-3,6	30	8	6,1
				2,0-4,0	50		6,9
		92144	92344	0,2-1,0	65	4
				0,4-1,2			8,2
		92126	92326	1,0-2,0	65	4	6,8
		92128	92328	2,0-4,0	65	8