Clarke GRH125 Operating & Maintenance Instructions Download Page 9

Shutting OFF the Heater

A.  For Short Periods.

Simply turn the control knob clockwise to the ‘Pilot’ position.

B.  For Prolonged periods.

1.

Turn the Control Knob clockwise to the Pilot position, then push the knob IN
and turn a further quarter turn to the OFF position.

2.

Close propane gas supply cylinder valve

9

CLEANING AND MAINTENANCE

WARNING: Never attempt to service heater while it is

(a) connected to propane supply,
(b) operating
(c) hot. (Severe burns can occur.)

1.

Turn heater off and let cool at least 20 minute, before cleaning.

2.

Keep heater clean. Clean it annually or as needed to remove dust  and
debris. If heater is dirty or dusty, clean itwith a damp cloth. Use household
cleaners on difficult spots.

3.

Inspect heater before each use. Check connections for leaks. Apply mixture
of liquid soap and water to connections. Bubbles forming show a leak. Correct
all leaks at once.

4.

Clean inside heater using compressed air where possible. Blow air back
and forth along the entire burner face until all dust has been dislodged from
surface of the screen. Blow air through venturi from the control end (orifice)
of heater.

5.

Inspect hose/regulator assembly before each use. If hose is badly worn or
cut, have it replaced.

6.

Have heater inspected yearly by a qualified service agency.

Adjusting the Pilot Light

Pull off the control knob, then unscrew the Hex Head
screw immediately beneath the control block, to
reveal the adjuster screw, arrowed in Fig.4.

Adjust the pilot light so that it burns steadily with a blue
flame. It should not be yellow. Replace the Hex head
screw

Fig.4

Summary of Contents for GRH125

Page 1: ...GAS HEATER OPERATING MAINTENANCE INSTRUCTIONS Model No GRH125 GAS HEATER 0806...

Page 2: ...400 PARTS SERVICE FAX 020 8558 3622 or e mail as follows PARTS Parts clarkeinternational com SERVICE Service clarkeinternational com PARTS SERVICE CONTACTS SPECIFICATIONS Rating BTU Output 125 000 Btu...

Page 3: ...ound you and you can look forward to it giving you long and reliable service Keep this booklet safe for future reference as any person who has not read this booklet should not be allowed to operate th...

Page 4: ...the heater where Gasoline Paint thinner or other highly flammable vapour or high dust content is present Use ONLY in well ventilated areas Provide a ventilation opening of at least 10 square feet to...

Page 5: ...eater is designed to operate with a minimum 20 pound 9 kg propane tank You may need two or more tanks or one larger tank in colder weather Use a 100 pound 45 kg tank for longer operation or in very co...

Page 6: ...that specified by Clarke International Positioning the Heater The heater and propane gas cylinder must be located on a hard flat level surface to minimize the risk of accidental tipping The propane g...

Page 7: ...ppliance DO NOT attempt to adjust this regulator It has been preset at the factory to provide safe and proper operation of the appliance Attach the regulator to the gas cylinder ensuring the cylinder...

Page 8: ...ter C Fig 2 until the pilot light ignites The pilot light may be viewed through the window shown at A Fig 2 8 NOTE If a new gas cylinder has been connected it may take some time for the gas line to be...

Page 9: ...n difficult spots 3 Inspect heater before each use Check connections for leaks Apply mixture of liquid soap and water to connections Bubbles forming show a leak Correct all leaks at once 4 Clean insid...

Page 10: ...replace thermocouple 7 Automatic control valve 7 Replace automatic control needs to be replaced valve 8 Loose wires on tip over 8 Tighten wires on tip over switch switch 9 Loose or broken wire 9 Tigh...

Page 11: ...Starter GRH125CR835 11 Axle GRH125CR820 12 Axle Brackets GRH125CR815 13 Handle GRH125CR725 14 Wheel GRH125CR810 15 Valve Supply Tube GRH125M9005 16 Clamp GRH125M9010 17 Burner Manifold GRH125M9015 18...

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