Troubleshooting Guide - Grindmaster CPO-1P Operator's Manual

Troubleshooting Guide

Before you call for help, please read the following:
WARNING
Unplug power cord from outlet before cleaning or servicing your brewer.
Problem Possible Source
No Hot Water 1. Tank Heater
2. Hi-limit thermostat
or main thermostat
Steaming or 1. Main thermostat
Spitting Around Funnel
2. High altitude
Dripping 1. Not siphoning
properly
Dry Coffee 1. Filters
Remaining on Brew 2. Not siphoning
properly
3. Improper loading of 3. Filter and coffee in brew basket
brew basket
Warmer Station Cold 1. Warmer - defective
2. Warmer On/Off
switch
3. Bad harness
Overflowing 1. Receiving container 1. Operating instructions
not completely
empty at start of
brew cycle.
2. Not siphoning
properly
If you still need help, call GMCW Technical Service Department, (502) 425-4776 or (800) 695-4500 (USA & Canada
only) (Monday through Friday 8 AM - 6 PM EST). Please have the model and serial number ready so that accurate
information can be given.
Prior authorization must be obtained from GMCW for all warranty claims.
GMCW provides the industry's BEST warranty. Visit our website at GMCW.com for warranty terms and
conditions.
Portable Pourover Coffee Brewers
Check
1. Check the voltage at the tank heater
terminals. Voltage should be 120VAC or 240VAC.
Check serial tag for proper voltage.
2. Check the voltage between the white
wire on the tank heater terminal and the
incoming terminal (black wire) on the
hi-limit thermostat, then the outgoing
(black wire) terminal on the hi-limit
thermostat.
1. Thermostat contact stuck or out of
calibration.
2. For altitude above 5,000 feet.
1. Water should flow from sprayhead
freely.
1. Are correct filters being used?
2. Refer to "dripping" step 1
1. Voltage at warmer terminals should
be 120VAC or 240VAC.
2. If voltage is not present on warmer
terminals, check continuity of switch.
3. Check connections between harness and
switch, and between switch and warmer.
2. Refer to "dripping" step 1.
Grindmaster ®
Solution
1. (A) If correct voltage is present at the
tank heater terminals and water is
not being heated, replace tank heater.
(B) If voltage is not present at tank
heater terminals, refer to step 2.
(C) If incorrect voltage is present at
tank heater terminals, check voltage
at outlet.
2. (A) If voltage is present on incoming
terminal on the hi-limit thermostat
but not on the outgoing terminal,
replace hi-limit thermostat.
(B) Check voltage between black and
white wire on receptacle. If voltage is
not present check outlet or circuit
breaker.
(C) If voltage is not present on
incoming terminal of hi-limit
thermostat, replace main
thermostat.
1. (A) Adjust thermostat to lower
temperature setting.
(B) Thermostat should be calibrated
or replaced.
2. (A) Adjust thermostat to lower
temperature setting.
1. (A) Clean sprayhead holes
(B) Check tightness of sprayhead tube.
(C) Check water outlet pipe for debris
1. Use correct filter
2. Refer to "dripping" step 1
3. Filter should be centred in brew basket
and coffee bed should be level.
1. If voltage is present on terminals, but
warmer is not heating, replace warmer.
2. If switch does not make and break
continuity when turned on and off,
replace switch.
3. All connections should be tight.
1. Always start brew cycle with empty
container.
2. Refer to "dripping" step 1.
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