Pfannenberg EB 210, Operating And Maintenance Instructions Manual

Page: 86 / 293

Operating and Maintenance Instructions - Chiller - Series EB 210 - EB 440 © Pfannenberg GmbH Page 86 / 293
EN
•
Turn main switch [1] , control switch, all circuit breakers inside the e-box [2] to the - 0 - (OFF) position.
•
Connect main power feed and alarm cable to the customer application.
o
If the chiller is provided without cables, customer must provide power and alarm cable and has to
connect the cables on terminal blocks inside the electrical box
[2] of the chiller. Cable entry
position is [12a] .
o
If the chiller is provided with external connector [12b] , customer must provide power and alarm
cable connected to the female part of the connector [12b] (delivered with the chiller).
DANGER
Electrical shock hazard due to incorrect connector handling
Always turn the main switch [1] to the
– 0 – (OFF)
position before connecting or disconnecting the plug [12b] .
•
Chiller with pump:
o
Purge pump by loosening purging screw that is located on the pump body. Be advised that the
pump has been purged correctly when only water is visible.
o
Switch circuit breaker for the pump to
– 1 – (ON)
position. All other circuit breakers must stay in the
– 0 – (OFF)
position.
o
Main switch [1] should be turned to the - l - (ON) position and the pump should be checked for the
correct rotation. (Please note that there is an arrow located at the back part of the pump for
direction indication).
CAUTION
Damage due to incorrect pump operation
The pump must not run dry or in inverse direction; therefore, the checking of the correct rotation must be quick.
In case of wrong rotation, turn the main switch [1] immediately to the
– 0 – (OFF)
position. Swap two phases R-
S-T on the terminal board of the electrical box [2] to establish the correct phase sequence. On chiller with
phase check relay the control is automatic.
o
Make sure to have main switch [1] turned to the - l - (ON) position. While pump is running; the fluid
level must always stay over the minimum level (check level indicator [4] ). After the hydraulic circuit
has run for approx. 5 minutes, turn main switch [1] to
– 0 – (OFF)
position and check again the
visual level of the tank [4] ; refill the tank in case of need.
•
Make sure to have main switch [1] turned to the - 0 - (OFF) position. Switch all circuit breakers to the
– 1 –
(ON) position.
•
Turn main switch [1] to the
– 1 – (ON)
position.
•
Fan [5] should be checked for the correct rotation. (Please note that there is an arrow located at the side part of
the fan-shroud for direction indication).
At this time the chiller is ready to operate automatically according to the controller’s “set point values”. If necessary,
set controller
[7]
according to customer’s temperature requirements. (Please refer to the manual of the thermostat
delivered with the unit).