Regloplas 90M Instructions De Service page 28

4.1.3 Semi-annual checks/maintenance procedures
1 Level control functional test (→ Service): Evacuate the unit via the drain plug and then switch on as described in
Section 2.7.
2 Check the electrical equipment such as the ground conductors, firm positioning of connecting leads, etc.
3 Disassemble the solenoid valve (→ Service): Check diaphragm for scaling and damage. Ensure that the core and
spring bolts move smoothly. Clean or replace components as necessary.
4 Descale cooler.
5 Check the function of the safety thermostat:
Model 90M with RT32 controller: Heat unit (temperature control circuit) to 95 °C. The Safety thermostat indicator
lamp (Table 1) will light up on the controller. The heater must switch off.
With RT50 control system: Enter the set-point value at the control system as follows: Model 90M to 95 °C,
Model P140M to 150 °C and Model P160M(D) to 170 °C. Heat the unit (temperature control circuit) to the tem-
perature indicated.
With the RT50 control system, it may be necessary to enter the outlet temperature limit (RT50 Programming
Instructions, Section 7.2, P 3.2) or maximum set-point value (P 4.4). The alarm, Safety thermostat triggered, will
appear. The unit must now cool.
After these checks have been completed, re-enter the original set-point values at the RT50.
The temperature control circuit (connection hoses, consumer, etc.) must be suitable for the
check temperature.
4.1.4 Annual checks/maintenance procedures
Replace the heat transfer fluid (water and corrosion inhibitor) after approximately 2000 hours of operation (corresponds
to about one year in a one-shift operation). If the water quality is poor (contamination, etc.), or the unit is used in more
than one shift, it must be replaced more frequently (→ 4.2).
4.2 Cleaning
– Always cool the unit.
– Switch off the unit, press the main switch and unplug the power cord.
– When using a solvent for cleaning: Due to danger of explosion, do not blow out the tank or
cooler. They must be rinsed thoroughly. When using a solvent, follow the manufacturer's
regulations.
– Solvents are flammable under certain conditions; therefore, cleaning shall not be performed
in the vicinity of heat sources.
Less than optimal operating conditions require that the procedures listed below be performed with greater frequency.
1 Evacuate the unit through the inlet (→ Service).
2 Clean the filter in the temperature control circuit.
3 Check the cooler for scaling; if necessary, clean using the REG descaling agent.
4 Level control: Dismantle level switch and clean. Note: Ensure that the level switch is reinstalled correctly
(NO above → Service).
5 Disassemble the solenoid valve (→ Service): Check the diaphragm for scaling and damage. Ensure that the core and
spring bolts move smoothly. Clean or replace components as necessary.
6 Check pump for corrosion; replace as necessary.
7 We recommend checking the consumer for scaling and soil whenever the unit is cleaned. Scaling and soil signifi-
cantly restrict heat exchange between the consumer and the heat transfer fluid, as well as increase the pressure
drop across the consumer, so that, over time, the unit's pump capacity is no longer sufficient to transfer the re-
quired quantity of heat.
5 Repairs
– Before each repair, cool and evacuate the unit.
– Switch off the unit, actuate the main switch, and unplug the power cord.
– Remove all hoses from the unit.
Use only original replacement parts.
To ensure quick and accurate delivery of replacement parts, we need the following information:
1 Model
2 Serial number
3 Voltage
4 Frequency
You will find this data on the unit's rating plate.
5 Part number of the component. You will find this information on the corresponding drawing in these Operating
Instructions (→ Service), as well as on the schematic in the electrical section of the unit.
BA 90M-P140M-P160M(D) 0802/dfe
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