HP Hewlett Packard Refrigerator Refrigerated Recirculating Chillers User Manual

Operators Manual  
Refrigerated Recirculating Chillers  
Powerful Cooling  
Microprocessor Controller  
Digital Set & Read with  
High Flow Centrifugal Pump,  
Positive Displacement Pump or  
Turbine Pump  
110-116 rev. D  
ecn 1390  
 
Section 1 - General Information  
1.1 Warranty  
Thank you for your purchase. We are confident it will serve you for a long time. Our warranty to you  
is as follows:  
The manufacturer agrees to correct for the original user of this product, either by repair, or at the  
manufacturer’s election, by replacement, any defect which develops after delivery of this product  
within the period as stated on the warranty card. In the event of replacement, the replacement unit  
will be warranted for 90 days or warranted for the remainder of the original unit’s parts or labor  
warranty period, whichever is longer.  
If this product should require service, contact the manufacturer/suppliers’ office for instructions. When  
return of the product is necessary, a return authorization number will be assigned and the product  
should be shipped, transportation charges pre-paid, to the indicated service center. To insure prompt  
handling, the return authorization number should be placed on the outside of the package and a  
detailed explanation of the defect enclosed with the item.  
This warranty shall not apply if the defect or malfunction was caused by accident, neglect,  
unreasonable use, improper service, or other causes not arising out of defects in material or  
workmanship. There are no warranties, expressed or implied, including, but not limited to, those of  
merchantability or fitness for a particular purpose which extends beyond the description and period  
set forth herein. The manufacturer’s sole obligation under this warranty is limited to the repair or  
replacement of a defective product and the manufacturer shall not, in any event, be liable for any  
incidental or consequential damages of any kind resulting from use or possession of this product.  
Some states do not allow: (A) limitations on how long an implied warranty lasts or (B) the exclusion or  
limitation of incidental or consequential damages, so the above limitations or exclusions may not  
apply to you. This warranty gives you specific legal rights. You may have other rights which vary  
from state to state.  
1.2 Unpacking  
Your recirculating chiller is shipped in a special carton. Retain the carton and all packing materials  
until the unit is completely assembled and working properly. Set up and run the unit immediately to  
confirm proper operation. Beyond one week, your unit may be warranty repaired, but not replaced. If  
the unit is damaged or does not operate properly, contact the transportation company, file a damage  
claim, then contact the company where your unit was purchased.  
1.3 Package Contents  
– Recirculating Chiller  
– Operators Manual  
– Warranty Card  
– 2 sets of Inlet/Outlet Adapters: 1/2 inch I.D. tubing; 5/8 inch I.D. tubing  
– Durable Tubing, 1/2 inch I.D.  
1.4 Description  
These chillers provide cooling power for demanding applications, and economically replace tap water  
cooling systems. All models have a microprocessor controller, digital set/read and readout in °C or  
°F. The refrigeration system has modulation capability to provide cooling as needed and thus greater  
temperature stability and longer compressor life. Wetted parts are brass, copper, polypropylene,  
PVC, nylon and stainless steel.  
3
 
1.5 Chiller Specifications and Pump Performance  
General Specifications To All Chillers  
Temperature Setability  
Temperature Uniformity  
Readout Selectability  
Pump Inlet & Outlet  
± 0.1°C  
± 0.5°C  
°C or °F  
1
/ inch NPT  
2
Pump Performance  
1
/
HP  
HP  
HP  
2
3
4
1 HP  
1
/
3
/
HP  
4
1
/
Positive Displacement Pump Capacity  
Centrifugal Pump Capacity  
Comparison of Pump Options  
4
 
6000 Series Standard Chillers with Magnetic Drive Centrifugal Pump  
Model  
6205  
6305  
6505  
Operating Temperature  
Compressor  
-5° to 40°C  
1
-5° to 40°C  
1
-10° to 40°C  
1
/
/
/
2 hp  
4 hp  
3 hp  
Cooling Capacity @ 20°C  
750 Watts  
450 Watts  
100 Watts  
1200 Watts  
825 Watts  
375 Watts  
1320 Watts  
1055 Watts  
550 Watts  
10°C  
0°C  
Pressure at 0 Flow Rate  
Flow Rate @ 0 psi  
10 psi  
10 psi  
10 psi  
4.3 gpm / 16.3 lpm  
4.3 gpm / 16.3 lpm  
4.3 gpm / 16.3 lpm  
Reservoir Capacity  
1.65 gal / 6.25 liters  
1.65 gal / 6.25 liters  
1.65 gal / 6.25 liters  
Dimensions  
h x w x d  
(in.)  
(cm)  
24 x 143/8 x 261/2  
61 x 36.5 x 67.3  
24 x 143/8 x 261/2  
61 x 36.5 x 67.3  
24 x 143/8 x 261/2  
61 x 36.5 x 67.3  
Shipping Weight  
155 lbs  
165 lbs  
170 lbs  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
120V, 60Hz, 6.8A  
108V to 132V  
080501  
120V, 60Hz, 8A  
108V to 132V  
080511  
120V, 60Hz, 13A  
108V to 132V  
080521  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 3.4A  
198V to 264V  
240V, 50Hz, 4A  
198V to 264V  
240V, 50Hz, 6.5A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080506  
080516  
080526  
Additional Specifications for "P" Series 6000 Chillers with Positive Displacement Pump  
Model "P" Series  
6205P  
6305P  
6505P  
Flow Rate @ 0 psi  
1 gpm / 3.8 lpm  
20 to 100psi  
160 lbs  
1 gpm / 3.8 lpm  
20 to 100psi  
170 lbs  
1 gpm / 3.8 lpm  
20 to 100psi  
170 lbs  
Pump Pressure (Adjustable)  
Shipping Weight  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
120V, 60Hz, 9.6A  
108V to 132V  
080502  
120V, 60Hz, 10.8A  
108V to 132V  
080512  
120V, 60Hz, 15.8A  
108V to 132V  
080522  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 4.8A  
198V to 264V  
240V, 50Hz, 5.4A  
198V to 264V  
240V, 50Hz, 8A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080507  
080517  
080527  
Additional Specifications for "T" Series 6000 Chillers with Turbine Pump  
Model "T" Series  
6205T  
6305T  
6505T  
Flow Rate @ 0 PSI  
3.5 gpm / 13.2 lpm  
20 to 100psi  
3.5 gpm / 13.2 lpm  
20 to 100psi  
3.5 gpm / 13.2 lpm  
20 to 100psi  
Pump Pressure (Adjustable)  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
120V, 60Hz, 9.6A  
108V to 132V  
080503  
120V, 60Hz, 10.8A  
108V to 132V  
080513  
120V, 60Hz, 15.8A  
108V to 132V  
080523  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 4.8A  
198V to 264V  
240V, 50Hz, 5.4A  
198V to 264V  
240V, 50Hz, 8A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080508  
080518  
080528  
Environmental Conditions • Indoor Use Only  
• Maximum Altitude : 2000 meter  
• Operating Ambient : 5° to 30°C  
• Relative Humidity : 80% for temperatures to 30°C  
• Class 1 : Residential, Commercial, Light Industrial  
• Pollution Degree : 2  
• Class 2 : Heavy Industrial  
Notes: Refer to the serial number plate on rear of the chiller for model and electrical data.  
Cooling Capacity, Watts x 3.41 = BTUs/hr. Performance specifications determined at ambient temperature of 20°C/68°F.  
For 50Hz models, derate cooling capacity and pump flow by 17%.  
External Pressure Reducing Assembly (for Positive Displacement Pump models) Steps down high outlet pressure to 10 to 45 psi. Cat. No 060302  
5
 
6000 Series Standard Chillers with Magnetic Drive Centrifugal Pump  
Model  
6705  
6105  
6155  
Operating Temperature  
Compressor  
-15° to 40°C  
3
-15° to 40°C  
1 hp  
+5° to 35°C  
11/2 hp  
/
4 hp  
Cooling Capacity  
@20°C 2500 Watts  
@10°C 1700 Watts  
@ 0°C 760 Watts  
@20°C 2850 Watts  
@10°C 1925 Watts  
@ 0°C 940 Watts  
@20°C 5200 Watts  
@10°C 3600 Watts  
@ 5°C 2700 Watts  
Pressure at 0 Flow Rate  
Flow Rate @ 0 psi  
10 psi  
10 psi  
10 psi  
4.3 gpm / 16.3 lpm  
4.3 gpm / 16.3 lpm  
4.3 gpm / 16.3 lpm  
6.25 gal / 23.65 liters  
Reservoir Capacity  
1.65 gal / 6.25 liters  
1.65 gal / 6.25 liters  
Dimensions  
h x w x d  
(in.)  
(cm)  
24 x 143/8 x 261/2  
61 x 36.5 x 67.3  
24 x 143/8 x 261/2  
61 x 36.5 x 67.3  
30 x 21x 27  
76.2 x 53.3 x 68.6  
Shipping Weight  
178 lbs  
178 lbs  
450 lbs  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
208-230V, 60Hz, 7.5A  
187V to 253V  
080531  
208-230V, 60Hz, 8A  
187V to 253V  
080542  
208-230V, 60Hz, 12A  
187V to 253V  
080593  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 7.5A  
198V to 264V  
240V, 50Hz, 8.5A  
198V to 264V  
240V, 50Hz, 12A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080536  
080546  
080594  
Additional Specifications for "P" Series 6000 Chillers with Positive Displacement Pump  
Model "P" Series  
6705P  
6105P  
6155P  
Flow Rate @ 0 psi  
4 gpm / 15.2 lpm  
20 to 100psi  
178 lbs  
4 gpm / 15.2 lpm  
20 to 100psi  
178 lbs  
4 gpm / 15.2 lpm  
20 to 100psi  
450 lbs  
Pump Pressure (Adjustable)  
Shipping Weight  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
208-230V, 60Hz, 10A  
187V to 253V  
080532  
208-230V, 60Hz, 11A  
187V to 253V  
080544  
208-230V, 60Hz, 12A  
187V to 253V  
080596  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 10A  
198V to 264V  
240V, 50Hz, 11A  
198V to 264V  
240V, 50Hz, 12A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080537  
080547  
080597  
Additional Specifications for "T" Series 6000 Chillers with Turbine Pump  
Model "T" Series  
6705T  
6105T  
6155T  
Flow Rate @ 0 PSI  
3.5 gpm / 13.2 lpm  
20 to 100psi  
3.5 gpm / 13.2 lpm  
20 to 100psi  
3.5 gpm / 13.2 lpm  
20 to 100psi  
Pump Pressure (Adjustable)  
Volts, Hz, Amps  
Volts Range  
60Hz Cat. No.  
208-230V, 60Hz, 9.6A  
108V to 132V  
080533  
208-230V, 60Hz, 10.8A  
108V to 132V  
080543  
208-230V, 60Hz, 12A  
187V to 253V  
080598  
Volts, Hz, Amps  
Volts Range  
240V, 50Hz, 9.6A  
198V to 264V  
240V, 50Hz, 10.8A  
198V to 264V  
240V, 50Hz, 12A  
198V to 264V  
Over Voltage: Category II  
50Hz Cat. No.  
080538  
080548  
080599  
Environmental Conditions  
• Indoor Use Only  
• Maximum Altitude : 2000 meter  
• Relative Humidity : 80% for temperatures to 30°C • Pollution Degree : 2  
• Class 1 : Residential, Commercial, Light Industrial • Class 2 : Heavy Industrial  
• Operating Ambient : 5° to 30°C  
Notes: Refer to the serial number plate on rear of the chiller for model and electrical data.  
Cooling Capacity, Watts x 3.41 = BTUs/hr. Performance specifications determined at ambient temperature of 20°C/68°F.  
For 50Hz models, derate cooling capacity and pump flow by 17%.  
External Pressure Reducing Assembly (for Positive Displacement Pump models) Steps down high outlet pressure to 10 to 45 psi. Cat. No 060302  
6
 
Section 2 - Set Up  
Before proceeding, be sure all power is off  
2.1 Location  
Locate the chiller on a strong, level surface. Insure easy access to the top cover and position  
the chiller for unobstructed air flow through the front and rear screens. The front wheels can be  
locked to keep the chiller in place while in use. Avoid voltage drops by using properly grounded  
power outlets wired with 14 gauge or larger diameter wire. If possible, be close to the power  
distribution panel. Minimize low line voltage problems by eliminating the use of extension cords.  
2.2 Reservoir Fluids  
For most applications above +15°C, distilled water is satisfactory. For operation below +15°C, the  
chiller MUST be protected with an antifreeze solution. Ethylene glycol (laboratory grade) and water  
in a 50/50 mixture is satisfactory from +15°C to -15°C. Select a fluid that is compatible with the  
chiller's wetted parts of brass, copper, polypropylene, PVC, nylon and stainless steel. Only use fluids  
that will satisfy safety, health and equipment compatibility requirements. CAUSTIC, CORROSIVE  
OR FLAMMABLE FLUIDS MUST NEVER BE USED.  
Do not use a flammable fluid as a fire hazard may result.  
WARNING!  
Operation below +15°C requires antifreeze in the circulating fluid.  
2.3 Pump, Hoses and Couplings  
To maintain a safe workplace and to avoid leaks, special care should be taken when choosing hoses  
and connectors for the chiller.  
1. Pressure ratings - Hoses should be able to withstand the largest pressure that they will  
encounter. For positive displacement pump models, this is 100 psi.  
2. Flexible tubing - Avoid tubing that will expand and take up fluid volume when operating at the  
desired pressure.  
3. Hose diameter - The fittings on the chiller Outlet and Inlet lines are internally threaded,  
1/2 inch I.D. N.P.T. The 2 adapters sets supplied are for 1/2 inch I.D. tubing and 5/8 inch I.D.  
tubing. Other fittings can be used if a smaller hose diameter is desired. Remember that the  
operating pressure in the circulating system increases when using a smaller diameter hose.  
4. Couplings & Clamps - The use of screw-tightened hose clamps is necessary on all joints to  
insure good, tight connections. Quick connectors are not recommended because they have the  
potential for restricting flow rate.  
7
 
IMPORTANT!  
Chillers equipped with a high pressure positive displacement pump have a pressure  
regulator inside of the chiller and a pressure gauge on the control panel. To access this  
regulator, remove the rear air grille. The valve is located to the right. On models 6107 & 6705,  
6155 the regulator is located center point, upper grille (rear).  
The Pressure Valve is FACTORY ADJUSTED to 40psi. If you do NOT want to operate at this  
pressure, or do not know what your operating pressure should be, start at a lower operating  
pressure. Reduce the pressure by turning the valve counterclockwise (unscrew outward)  
before starting the chiller.  
With the chiller fully connected and running, read the pressure gauge and turn the regulator  
to the desired pressure. If required, an optional external pressure reducing assembly is  
available for this pump to reduce the pressure to 10 - 45 psi.  
2.4 Setting Up a Closed System or Cooling Coil to the Chiller  
1. Connect your closed cooling system to the chiller with hoses or pipes. The direction of the flow  
through the system can be controlled by the way the hoses or pipes are connected to the chiller.  
The “Inlet” will draw liquid into the chiller; the “Outlet” will pump liquid out.  
2. Turn the access panel screws to remove the top cover and expose the reservoir. Turn the filler  
cap and lift up to remove. Use a funnel to fill the reservoir with fluid. When full, remove the  
funnel, but do not replace the cap at this time. Check hoses and fittings for tightness and be  
sure there are no bends or crimps in the hoses.  
3. Plug the chiller into the proper AC outlet (unit's electrical requirements on rear of unit). Press  
the POWER ON button. The chiller will begin pumping liquid through your system. Check for  
leaks.  
4. With the pump running, the reservoir's fluid level will decrease as the closed system begins to fill.  
Add a little fluid at a time until the level in the reservoir stops going down. This means that your  
system is filled and the air has been purged from it. Replace the reservoir cap and turn it  
clockwise to lock it. Recheck the cap for tightness.  
Note: When chillers with the standard magnetic drive centrifugal pump are connected to an external  
apparatus with a built-in flow shut-off, an external bypass loop assembly (pt.# 510-147) may be  
needed if operating below 20°C. This bypass assembly continues fluid circulation to and from the  
pump even though the main flow to the external apparatus has been blocked.  
2.5 Setting Up an Open Bath System to the Chiller  
1. Connect hoses to the Inlet and Outlet fittings on the back of the chiller. The "Inlet" draws fluid  
into the chiller, the "Outlet" pumps fluid out. Fill the open bath. Considering this flow, position  
the hoses in your bath for a good circular flow and stirring motion.  
2. Turn the panel screws to remove the top cover and access the reservoir. Turn and lift the filler  
cap to remove. Use a funnel to fill the reservoir with the same fluid in your bath. This primes the  
pump and helps establish a flow when the chiller is turned on.  
3. Replace the reservoir cap and turn to lock it. Check for tightness. Check all hoses and fittings.  
Be sure there are no bends or crimps in the hoses, and that the hose attached to the chiller's  
inlet is submerged near the bottom of the bath. Secure the inlet and outlet hoses to the open  
tank so they do not move when pumping starts. The bath's fluid level will drop slightly as the  
hoses in the system fill up with fluid. The bath's fluid must cover the chiller's inlet hose.  
4. Plug the unit into the proper AC outlet (unit's electrical requirements on rear of unit). Press the  
Power On button. The chiller will begin pumping fluid through your system. Check for leaks.  
8
 
Section 3 - Operation  
3.1 Power Requirements  
Caution! Be sure that the power supply is the same voltage as specified on the nameplate  
With the chiller plugged in (before pressing the POWER ON button), the display responds by showing  
standby (....). If there is no response, check that the circuit breaker on the rear of the chiller is in the  
ON position. An extension cord is not recommended.  
(For models with  
optional heater only)  
LED  
DISPLAY  
°C OR °F  
DISPLAY  
SETTING  
ADJUSTMENT KNOB  
SET/MENU  
BUTTON  
POWER  
BUTTONS  
PRESSURE GAUGE,  
(On Positive Displacement  
Pump models only)  
Front Face Plate  
3.2 Temperature Setting and Adjustments  
After setting up and filling the chiller:  
1. Press the POWER ON button. The LED display indicates (8888), the power up self test. When the  
chiller is turned on, there is a 60 second time-out period. During this time the controller is  
performing a self-diagnostic and a balancing of pressure across the compressor inlet and outlet.  
(a balanced system reduces the AC current required to start up the compressor and will result in  
an extended compressor life.) The pump is active during the start delay period. When the time  
out period reaches zero, the compressor starts and the chiller is then fully operational.  
Upon completion of the self test, the actual fluid temperature is displayed. Your desired  
operating temperature can now be set.  
2. Press the SET/MENU button. The degree lights flash indicating the temperature can be set or  
changed. Turn the SETTING ADJUSTMENT knob to the desired setting. This setting is accepted  
after pressing the SET/MENU button or will be automatically accepted after a few seconds of  
keypad inactivity. The degree light stops flashing and the display shows the actual temperature.  
3. The SET TEMPERATURE may be checked at any time by pressing and releasing the SET/MENU  
button. Allow sufficient time for the chiller to stabilize at the desired temperature.  
3.3 Selection of Celsius or Fahrenheit  
To change the readout to °C or °F:  
1. Press and hold the Set/Menu button until the display reads “UNITS”.  
2. Press Set/Menu again then turn the Setting Adjustment knob and select °C or °F.  
3. Press Set/Menu or the setting will be accepted after a few seconds.  
9
 
3.4 Setting the Readout High Limit  
This feature limits the readout setability so the operating temperature setting cannot easily be set  
above the High Limit you select. It is not an over temperature feature which shuts off the chiller.  
To set the readout High Limit:  
1. Press and hold the Set/Menu button until the display reads “UNITS”.  
2. Turn the Setting Adjustment knob until the display reads “HI-L”.  
3. Press the Set/Menu button, enter the desired value using the Setting Adjustment knob.  
4. Press Set/Menu and the display will again read "HI-L". The Setting Adjustment knob can be  
turned to access another menu option or you can wait until the entered value has been  
accepted. When the value is accepted, the degree light will stop flashing and the fluid  
temperature will be displayed.  
3.5 Controller Display Messages  
Display Message  
--Normal Screens--  
Standby mode. Unit plugged in. Power switch OFF, rear circuit breaker on  
....  
8888  
Power up self test displayed when power button initially pressed on  
--Menu Screen--  
Unit  
Change to °F or °C  
Unit/Hi-L  
Limits operating temperature setability  
--Error Screens--  
E-tF  
DEF  
Triac (alternistor) failure  
Displayed when chiller is reset to factory default settings  
--Optional Equipment (Flow or Float Switch)--  
No Flow  
E-nF  
E-FL  
Low Level Fluid  
3.6 Draining the Unit  
Press the Power Off button and unplug the chiller. Remove drain plug and reservoir cap and allow  
unit to drain. Syphon or use a small manual pump to remove all fluid from the reservoir.  
Run the unit intermittently (5 to 10 seconds each time) to pump the water from the system. Stop  
pumping when the fluid is reduced to a trickle. Running for a longer period will cause damage to the  
positive displacement pump. Open the reservoir and use suction or a hand pump to remove any  
remaining water.  
Prior to storage or shipping: Water MUST be removed from ALL parts of the chiller system, or  
an ANTIFREEZE must be added to insure that internal damage does not occur.  
3.7 Controller Default Settings  
To return to the factory default values:  
1. Press and hold the Power On button, then turn off at the circuit breaker.  
2. Still holding Power On, hold the Set/Menu button while turning the unit on by the circuit breaker.  
3. The controller will display “DEF” and go to the standby mode.  
4. Your set temperature and other settings will have to be reset.  
10  
 
Section 4 - Diagram of Models  
TOP COVER,  
TO ACCESS  
RESERVOIR  
PROVISION FOR 15  
OR 9 PIN FEMALE  
CONNECTOR  
6705 & 6105  
TOP COVER,  
TO ACCESS  
RESERVOIR  
REAR ACCESS PANEL  
- TEMPERATURE  
PROBE  
- PRESSURE  
REGULATOR  
INLET  
Fluid In  
OUTLET  
Fluid Out  
DRAIN  
CIRCUIT  
BREAKER  
IEC 320  
CONNECTOR  
(LINE VOLTAGE)  
AIR FILTER  
6205 & 6305 & 6505  
TOP COVER,  
TO ACCESS  
RESERVOIR  
TEMPERATURE PROBE  
ACCESS PLUG  
9 PIN FEMALE  
CONNECTOR  
CIRCUIT  
BREAKER  
IEC 320  
CONNECTOR  
(LINE VOLTAGE)  
DRAIN  
PLUG  
DRAIN  
INLET  
Fluid In  
AIR FILTER  
OUTLET  
Fluid Out  
REAR ACCESS PANEL  
11  
 
6155  
12  
 
Section 5 - Maintenance  
Prepare a schedule to perform these specific maintenance tasks at their recommended intervals.  
5.1 Standard Magnetic Drive Centrifugal Pump Motor  
When the chiller is used continuously, this pump motor must be oiled every 6 months with SAE 20 oil.  
Press the POWER OFF and unplug the chiller. Remove the rear access panel to gain access to the two  
oil ports located on the pump motor. Do not apply excessive amounts of oil.  
(On models 6105, 6705 and 6155, remove the side panel to access the pump)  
5.2 Positive Displacement and Turbine High Pressure Pump Motor  
The bearings of the pump, require periodic oiling. Press POWER OFF and unplug the chiller. Remove  
the rear access panel to gain access to the pump.  
With heavy use, oil every year. With medium use, oil every 3 years. With light use, oil every 5 years.  
Use about 150 drops (1 teaspoon) of SAE 20 oil in each bearing.  
(On models 6105, 6705 and 6155, remove the right side panel to access the pump)  
5.3 Fluid Filter Included With High Pressure Pump  
To optimize flow and prevent pump damage due to scale or foreign particles, a filter is included with  
the high pressure pump models. How often the filter requires maintenance depends on the  
environment and use of the chiller.  
To access this filter remove the left side panel. The water filter is located behind the side brace. Grip  
the plastic sediment bowl firmly and turn counter-clockwise to remove it. Clean the stainless steel  
wire screen found inside and replace it in the filter holder. Do not replace the filter screen unless it is  
damaged.  
(On models 6105 and 6705, remove the right side panel to access the water filter and pump. On  
model 6155, you must remove the top panel in order to remove the side panel. After removing the  
side panel, you will have access to the water filter.)  
5.4 Refrigeration Air Filter & Air Vents  
For maximum cooling efficiency, the condenser and the front and back air vents should be kept free  
of dust and dirt. Dirt thermally insulates the condenser coils and reduces the cooling capacity of the  
refrigeration system.  
Set up a periodic schedule to clean the removable air filter at least monthly. Tap water and mild  
detergent is sufficient to clean filter material. Frequency of cleanings depends on the atmospheric  
conditions around the chiller as well as length of operating time.  
13  
 
 

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