SR1-K-1 SR1-X - exhausto.de

3000162-2006-04-26.fm Usage
1. Usage
The SR1-K-1 and SR1-X are identical. The descriptions cover the following:
SR1-K-1 … used for EXHAUSTO fans BESF and BESB with motor power relay (MPR).
SR1-X … used for EXHAUSTO heat recovery units VEX 1.5, 2.5 and 3.5 with
motor power relay (MPR).
Other connections
to VEX
These instructions describe the connections between the VEX unit and SR1-X.
The other connections to the unit are described in the instructions placed in
the plastic pocket on the unit itself.
Operation It is possible to run two-speed operation controlled by an external clock function or a
similar device. If the motor overheats, the automatic system box must be reset manually.
2. Description
The control system consists of a control panel and an automatic system box:
Control panel The control panel is used to start and stop the fan, and to set the fan speed for normal
operation. It features indicator lights for operation, overheated motor warning and
minimum speed setting. The panel is supplied with low-voltage current from the
automatic system box.
Automatic system
box
Control panel
Automatic system
box
The automatic system box contains a safety function that protects the motor against
overheating, and a system for setting the fan speed via an external clock function or a
similar device. The safety function that protects the motor against overheating consists
of a thermal cut-out in the motor, which is linked to the automatic system box. When an
error signal is sent from the thermal cut-out, the power supply to the motor is cut and the
warning light is illuminated. To reset, switch off the function circuit breaker
and then switch it on again.
2/24
Cable screw connection
180
Function circuit breaker
for manual reset
130