d. Change the overload or relay if defective.
c. A restriction or moisture in the system will also cause intermittent cycling. A certified refrigeration
mechanic should be contacted in this situation.
c. Check for twists or kinks in outlet tubing.
e. The cartridge valve located in the water control assembly or bubbler can also become clogged
with foreign material. The cartridge valve can only be replaced and not repaired.
g. The water chiller may also develop a freezing condition in which the water will become frozen
inside the evaporator coil. This indicates a refrigeration problem or thermostat failure in which
case the water chiller needs to be checked by a qualified technician.
c. An incorrect refrigerant charge, restriction or defective compressor (not pumping) will also cause
the compressor to run without producing cold water. All these signs indicate a problem within the
refrigeration system and the water chiller must be checked by an authorized service company.
a. A dirty condenser or a blocked fan will cause a high head pressure and frequent cycling of the
overload protector.
d. If all components check positive for continuity then test the wiring harness plug for continuity to
see if there is a broken wire within the wiring harness insulation.
3. Compressor Runs – Water Is Warm:
a. The most common cause for a water chiller to run without producing cold water is a loss of
refrigerant. The water chiller must be taken to a certified refrigerant technician for repairs.
b. Make sure the condenser fan motor is operative. The fan blade must turn freely to help remove
the heat of compression.
4. Compressor Cycling On Overload Protector:
b. Check the incoming voltage to make sure it is within 10% of the serial nameplate rating.
5. Noisy Operation:
a. Check to make sure the fan blade is rotating freely.
b. Check the compressor mounting to make sure the pins and clips are not rattling. If the
compressor appears to be noisy internally, it must be replaced.
6. Restricted Or No Water Flow:
a. Ensure water supply service stop valve is fully open.
b. Verify minimum 20 psig supply line flow pressure.
d. Check the water inlet strainer. Sediment from the main supply can get trapped in the screen
along with installation materials such as pipe dope and flux. The screen should be cleaned and
checked on a regular basis and replace if needed.
f. Check flow adjustment. See start up note #3.
h. No power to transformer connections, loose or wires cut.
a. Open fixture. Loosen nuts holding valve bracket assembly to bottom of fixture but do not
remove. Move complete valve bracket assembly further back from the front push pad and
7. Water Drips Or Will Not Shut Off:
A151.8-VR
Page 7 of 11
Date:
11/10/2020
7021-024-001
MURDOCK MFG. •
15125 Proctor Avenue • City of Industry, CA 91746 USA
Phone 800-453-7465 or 626-333-2543 • Fax 626-855-4860 • www.murdockmfg.com
Member of
CONTEMPORARY WATER COOLERS
I N S TA L L AT I O N / M A I N T E N A N C E I N S T R U C T I O N S
DRINKING FOUNTAINS
