RC
Recirculating
chiller
Operating instructions
Recirculating Chiller
RC Recirculating chillers
RC350G
RC400G
RC1400G
RC3000G
Part No 09931/Issue 8 Page 2 August 2001
Recirculating Chiller
CONTENTS
1 Safety 4
2 Installation 5
2.1 Connection for closed loop circulation 6
2.2 Connection for open loop circulation 6
2.3 Siting the chiller 7
2.4 Filling the reservoir 7
2.5 By-pass 7
2.6 Remote alarm socket 8
2.7 Remote probe 8
3 Operation 8
3.1 The controller 9
3.2 Temperature setting 9
3.3 Over/undertemperature alarm setting 9
3.3.1 Setting high alarm offset 10
3.3.2 Setting low alarm offset 10
3.4 Cooling 10
3.5 Tuning 10
3.6 Undertemperature thermostat 10
4 Safety devices 11
4.1 Undertemperature thermostat 11
4.2 Flow fail cut-out 11
4.3 Overtemperature cut-out 11
4.4 High pressure cut-out 11
4.5 Compressor overtemperature thermostat 11
5 Fault diagnosis 12
6 Technical specification 13
7 Maintenance 13
7.1 Cleaning 14
7.2 Replacement of fuses 14
7.2.1 RC350G, RC400G, RC3000G 14
7.2.2 RC1400G 14
8 Guarantee 14
9 Service 15
Part No 09931/Issue 8 Page 3 August 2001
Recirculating Chiller
1 Safety
The following symbols marked on the equipment mean:-
Caution: Read these operating instructions fully before use and pay particular attention to
sections containing this symbol
Caution: Surfaces can become hot during use.
Always observe the following safety precautions
• Use only as specified by the operating instructions, or the intrinsic protection may be impaired.
• After transport or storage in humid conditions, dry out the unit before connecting it to the supply
voltage. During drying out the intrinsic protection may be impaired.
• Connect only to a power supply with a voltage corresponding to that on the serial number label.
• Connect only to a power supply which provides a safety earth (ground) terminal.
• Before moving, disconnect at the power supply socket. Do not remove the IEC connector (where
applicable).
• Do not check the temperature by touch, use the temperature display or a thermometer.
• To reduce the risk of eye injury during high temperature operation, use safety goggles or
spectacles.
• Do not touch surfaces which become hot during high temperature operation.
• Ensure that the mains switch is easily accessible during use.
• Do not block or restrict ventilation slots.
• If liquid is spilt inside the unit, disconnect it from the power supply and have it checked by a
competent person.
• It is the users responsibilty to carry out appropriate decontamination if hazardous material is spilt
on or inside the equipment.
• Do not connect to a power supply or switch on before filling the system.
• To prevent excessive pressure occurring during closed loop operation fill the system to a
maximum of 95% of the total volume to allow for liquid expansion.
• Take care when topping up or draining, as the liquid in the system may be very hot or cold.
• If the alarm lamp is illuminated do not touch the liquid, it may be very hot. Refill carefully.
• Drain before moving the unit. Before draining allow the liquid to cool to below 50°C or heat to
above 10°C.
• Use only liquids specified in the operating instructions, within the specified temperature range. If
the alarm lamp is illuminated the liquid temperature may be above its recommended maximum:
do not inhale the vapours given off as they may be toxic; liquids should be safely discarded and
replaced.
• When pumping to external apparatus, always use connecting pipe or hose suitable for the
operating temperature and liquid used, and check that the pipe connections are secure.
• Do not disconnect any pipes or hoses while they contain very hot or cold liquid.
• Refrigerated circulators are heavy, take care when lifting or moving; empty weights vary from
24kg to 88kg.
Part No 09931/Issue 8 Page 4 August 2001
Recirculating Chiller
r
2 Installation
Remove packing materials carefully, and keep for future shipment or storage of the unit.
Packs contain:
Recirculating chiller: RC350G, RC400G, RC1400G, RC3000G
Mains cable
Operating instructions
Optional remote probe
PRES Reservoir accessary pack:
PRES Reservoir
2 x Clips
2 x 3/8” to 1/2” adaptor
4 x M4 CSK screws
Mounting instruction drawing
Optional Remote Probe
Rear view: RC350G/400G/1400G chiller
P
ower supply voltage connector RC350G/400G
IEC connector 3 pole fused 10A 250v.
Pull open the fuse drawer to change a fuse.
RC1400G has 2 separate fuses rated 15A 250V
Drain pipe
Inlet pipe 3/8" BSP
male thread
incorporates in line
filte
.
Wheels
Brakes
Brakes on front wheels
Push down to lock
Remote alarm socket
Outlet pipe 3/8" BSP m ale
thread
Remote probe
O/temp cutout reset
.
.
Serial number label
PRES
fixings
Figure 1
Part No 09931/Issue 8 Page 5 August 2001
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