Preparation; Procedure - Bosch Rexroth MAD Operating Instruction

DOK-MOTOR*-IDYN*A*EXPD-IB05-EN-P
Rexroth MAD and MAF Motors in EX px d Design acc. to ATEX Directive 2014/34/EU
Adjustable pressure switching val‐
10.3

Preparation

10.4

Procedure

The minimum flow of the Bartec control device, type 07-3711-2213/1002, is
ue
preset for motors of frame size 100 ... 180. With this initialization, a drive sys‐
tem can be operated.
The purging time must be set according to the dimension of the total system
(purge hose length and number of motors within the purging cycle) on site.
For calculation see fig. 10-1 "Determine total purge volume" on page
WARNING
The initialization of the BARTEC controller cannot be accepted for the motors
with frame size 225. Are motors used with frame size 225 or controllers from
other manufacturers, determine the appropriate pressure switching values for
motor purging and set them manually.
Heed the details in
page 55, "Purge volume motor and tube" on page 53
tification plate on Ex-type motors" on page 26
ing values. In general, the locally test of the pressure switching values and
before startup must be ensured by the user of the total system.
Designation
DIFF A / DIFF B (traverse value on the pressure monitoring mod‐
ule)
MIN A / MIN B (minimum housing inner pressure, deactivation val‐
ue)
MIN P (arbitrary prewarning)
DP 1 (minimum or nominal operating pressure)
MAX (maximum housing inner pressure)
MAX 1 (maximum scavenging pressure)
Tab. 10-3: Preset pressure switching value (Bartec)
1. Have the documentations of all products used ready at hand.
2. Check the products for damage.
3. Check all mechanical and electrical connections (incl. the potential
equalization line).
4. Activate the safety devices and monitoring systems of the installation.
5. Get a commissioning log ready.
Once all requirements are met, proceed as follows:
1. Activate the fan for the MAD motor or the external cooling system to
cool the MAF motor.
2. Check the given values on the designation plate on the motor, like scav‐
enging gas volumen, scavenging gas, purging time, etc. (see
Ex-identification plate on Ex-type motors" on page
Risk of explosion due to incorrect adjusted
pressure switching values on the control de‐
vice!
tab. 10-3 "Preset pressure switching value (Bartec)" on
Bosch Rexroth AG 55/69
Commissioning
54.
and fig. 6-2 " Ex-iden‐
to adjust the pressure switch‐
Pressure
switching value
2.0 mbar
1.0 mbar
2.0 mbar
2.5 mbar
23.0 mbar
20.0 mbar
fig. 6-2 "
26). The values must